Science (1st prep) Final Revision (2024/2025) PDF

Questions Units (1), (2) Q(1): Write the scientific term: 1- The first scientific theory about the atom 2- It is everything that has a mass and occupies a space 3- Positively charged particles located inside the nucleus 4- An element necessary for greening of plant lea...

Questions Units (1), (2) Q(1): Write the scientific term: 1- The first scientific theory about the atom 2- It is everything that has a mass and occupies a space 3- Positively charged particles located inside the nucleus 4- An element necessary for greening of plant leaves 5- An element necessary for strengthening roots 6- An element necessary for healthy plant growth 7- The space that contains protons and neutrons 8- Particles that include protons, neutrons and electrons 9- Paths in which electrons revolve around the nucleus 10- Number of proton found inside the nucleus of the atom 11- The summation of numbers of both protons and neutrons 12- Different forms from elements having the same atomic number and different atomic masses 13- A type of fertilizers contains nitrogen, phosphorus and potassium. 14- A table in which elements are arranged ascendingly based on their atomic numbers. 15- A table in which elements are arranged ascendingly based on their atomic numbers, and the method of filling energy sublevels with electrons. 16- The horizontal rows in the modern periodic table. 17- The vertical columns in the modern periodic table. 18- Metals of group 1A. 19- Metals of group 2A. 20- The number of unpaired electrons in the Lewis structure of the element. * The number of lost or gained electrons. 21- The electrons found in the outermost energy level of an element. 22- Elements which contain 5,6 or 7 electrons in their outermost energy level. 23- The temperature at which the matter starts to change from solid to liquid. 1st Term (2024/2025) -1- 24- The temperature at which the matter starts to change from liquid to gas. 25- The simplest pure form of matter where components cannot be separated by physical or chemical methods. 26- Materials composed of two or more substances that are not chemically combined. 27- Mixtures whose components can be distinguished with the naked eye. 28- A semi-metal used in the manufacture of electronic chips. 29- An alloy that maintains its strength at high temperatures and is used in the manufacture of military aircraft structures. 30- A metal atom that has lost one electron or more. 31- A non-metal atom has gained one electron or more. 32- A bond that results from electrical attraction between a positive ion and a negative ion. 33- A bond that forms between two atoms of different non-metallic elements or between two similar atoms of a non-metallic element. 34- A bond that results from sharing each atom with one electron. 35- A bond that results from sharing each atom with two electrons. 36- A bond that results from sharing each atom with three electrons. 37- The simplest molecule of an organic compound in which a carbon atom is bonded to four hydrogen atoms. 38- The accumulated charges on the surfaces of objects when they lose or gain electrons. 39- The process of charging two uncharged objects, as a result of the friction between them. 40- The arrangement of materials according to their loss of electrons on rubbing each other. 41- A system used to protect installations and the buildings from lightning strikes. 42- The region of space around the electric charge, in which its influence appears without contact. 43- Imaginary lines that show the path taken by a small free moving positive charge placed in the electric field. 44- The instrument used to measure the electric charges. 45- The measuring unit of the electric charges. 1st Term (2024/2025) -2- 46- The process of charging an uncharged object by another one, as a result of their touching. 47- An instrument used for determining if an object is electrically charged or not. 48- A device used for determining the four main geographic directions. 49- A part of the magnet at which the magnetic force is the highest. 50- Substances that are attracted to magnets. 51- Substances that are not attracted to magnets. 52- The force that causes all objects to fall downward in the direction of Earth’s center 53- The space in which the gravitational force affects the object with attraction towards the Earth’s center 54- Lines represent the Earth’s gravitational force. 55- The mutual force of attraction between two objects, it acts on each object by equal magnitude but in opposite direction. 56- Regions in the space formed when a huge star collapses at the end of its life. 57- The rotation of any object in space around another central body in a curved path due to the gravitational attraction force between them. -------------------------------------------------------------------------------------------------------------------- Q(2): Complete the following sentences: 1- The electrons revolve around ………………. with a high speed. 2- The chemical symbol for ………….. element is (Ag). 3- ………………… are chemical compounds used in improving agricultural production. 4- An element its nucleus contains 27 nucleons and the number of neutrons is 14, so the number of electrons is ……………………… 5- ……….…… are different forms for one element having the same atomic number and different in ………….. number. 6- The outermost energy level for any atom doesn’t contain more than …….. electrons. 7- The number of main energy levels is ………………….. 8- The second period starts with …………..group and ends with ……………..group 9- The modern periodic table consists of ……………..periods and ……………..groups 10- The modern periodic table consists of ……………..blocks which are ………., ……., ……....and……... 1st Term (2024/2025) -3-  11- Inert gases locate in…………..block which has …………..groups. 12- The melting point of Br is …………….than the melting point of Cl 13- Mendeleev classified the elements according to…………………, while Moseley’s table is according to ………………….and modern periodic table is according to ………………………..and………………………….. 14- Halogens and inert gases are from …………………….block 15- The transition elements start to appear from ……………….period and they consist of …………..groups. 16- The chemical activity of alkali metals ………………..while we go from up to down , while the chemical activity of halogens …………………..while we go from up to down 17- Silicon and Germanium are considered from ……………………. 18- Water can be separated into its components using a device called …………………. 19- Water is electrolytically decomposed into two elements …………………………and …………………………. 20- Molecules of …………………. consists of atoms of the same type, while molecules of …………………. consists of atoms for different elements 21- The number of atoms in a single molecule in some polar compounds may reach several thousand, as in …………………. and …………………. 22- Nitric acid consist of three ……………… atoms, one hydrogen atom and one …………………. atom 23- Methane is from ………… molecules, while nitric acid is …………………. molecule. 24- Iron and cork can be distinguished by the difference in …………………. 25- Helium is used to fill …………………. while nitrogen gas is used to fill………………. 26- Carbon is considered from …………………. atomic molecules, while ……………. Is from polyatomic molecules 27- Types of chemical bonding are: …………………bonding and………….……..bonding 28- An atom becomes a positive ion when it………………… electrons. 29- An atom changes into ………………………… ion when it gains one or more electron 30- The ……………….. bond arises due to the …………………… attraction between positive ion and negative ion 1st Term (2024/2025) -4- 31- The closest inert gas to sodium is………………., while the closest inert gas to chlorine is…………………… 32- The chlorine atom is bonded to the sodium atom by the ……………………… bond 33- The number of energy levels in sodium atom is………………… than the number of energy levels in its ion 34- The bond in the hydrogen molecule is……………… covalent bond, while the bond in the nitrogen molecule is…………………… 35- The bond in the hydrogen chloride molecule is…………………, while the bond in the sodium chloride molecule is………………… 36- The melting point of ionic compound is…………………, while the melting point of covalent compound is…………………… 29- When Aluminum atoms (13Al) is converted into an…………………… ion, the number of electrons in its ion is………… 30- On rubbing ebonite rod with a piece of wool, the rod acquires ……………… electric charge, while the piece of wool acquires ……………… electric charge. 31- Different electrical charges……………, while similar electrical charges…………… 32- The electrical charges accumulated on the surfaces of objects are known as ……………………electricity. 33- Objects that can be charged with a static electric charge can be made of non-conductive materials such as..................... and ………………… 34- The electrostatic series is the arrangement of some materials according to their easiness of…………………… electrons 35- Weak electrical charges are measured by……………… 36- During metal plating by electrostatic plating, the required painted object is charged with a …………………. electric charge while the spray paint is charged with a……….… electric charge. 37- Electric power lines start from the………………… charge and end at the ………… charge 38- The electric force lines end at …………… of charged metal objects and don’t penetrate them 39- Types of magnets are ……………………….. and ………………………. 1st Term (2024/2025) -5- 40- …………………………… is attracted to the magnet, while ………………………. isn’t attracted to the magnet. 41- Gravitational force is a mutual force between two objects, acting with equal ……………….. in two ……………….. direction 42- The phenomenon of tides occurs due to the presence of …………………. between Earth and ……… 43- Gravitational force between two objects decreases as their ……………... decreases and the ………………. increases. 44- ……………………forces may be either attractive or repulsive between two charges, while ……………. forces are only attractive forces. -------------------------------------------------------------------------------------------------------------------- Q(3): Choose the correct answer: 1- The atom consists of positively charged ……….. a) electrons b) neutrons c) nucleus d) levels 2- An element contains 20 nucleons and number of negative charges is 9, so the number of neutral charges is ………… a) 12 b) 10 c) 11 d) 9 3- The chemical symbol of lead element is …………….. a) Bp b) Pb c) Rn d) Ra 4- Sphinx statue consists of rocks made up of ………… a) lime stone b) sand stone c) granite d) basalt 5- An atom of element revolves around it three energy levels and the outermost energy level contains 2 electrons so its atomic number is …………………. a) 12 b) 14 c) 2 d) 8 6- An element its outermost energy level (L) contains a number of electrons equals the number of electrons in the level (K) so its atomic number is ……. a) 4 b) 6 c) 8 d)12 7- NPK fertilizer consists of ………… element that helps to make the plant leaves green. a) K b) N c) P d) F 8- Deuterium is considered from the isotopes of …….. element. a) oxygen b) nitrogen c) hydrogen d) carbon 1st Term (2024/2025) -6-  9- Number of positive protons represents ……………… a) atomic number b) mass number c) number of levels d) number of elements 10- The mass of subatomic components is measured in atomic mass unit and its symbol is …………… a) U b) Y c) W d) H 11- ……………. is the first model for the atom on an experimental base a)Bohr b) Mendeleev C) Moseley d) Rutherford 12- Inside the nucleus of the atom, mostly the number of ……….. is more than or equal the number of protons a) atomic number b) electrons C)neutrons d) particles 13- ……….. element is necessary for strengthen roots of plants a) N b) P c) K d) O 14- Negatively charged particles that revolve around the nucleus are …….. a) protons b) electrons c) neutrons d) particles 15- An element its outermost energy level (M) contains one electron. So, its atomic number is ……………… a) 3 b) 9 c) 11 d)19 16- The chemical symbol of potassium is ………………… a) B b) Be c) K d) Al 17- …………………………. is considered from homogeneous mixtures. a) a mixture of iron filings and sawdust b) Salt solution c) A mixture of oil with water d) A mixture of sand and water 18- From molecules that consists of the same type of atoms is … molecule a) HCl b) H2O c) O2 d) NH3 20- ……………. can be decomposed through electrolysis by using Hoffman’s voltammeter a) water. b) mercuric oxide c) carbon d) nitric acid 21- We can distinguish between ………………… through thermal conductivity a) iron and copper b) rubber and plastic c) copper and rubber d) silver and iron 1st Term (2024/2025) -7-  22- Salt solution can be separated through ………………… a) filtration b) magnetic attraction c) evaporation and condensation d) precipitation 23- From polyatomic element molecules is ……………………… a) carbon b) oxygen c) ozone d) iron 24- From substances that can be separated by chemical means is ………. a) red mercuric oxide b) table salt solution c) iron filings and sand d) A mixture of oil and water 25- The molecular formula for a compound that consists of one nitrogen atom, one hydrogen atom and three oxygen atoms a) HO3N b) HNO3 c) O3HN d) NHO3 26- The toothpaste is coloured with ……………. colour on adding a litmus paper on it. a) blue b) red c) violet d) green 27- Balloons can be filled with ………… gas a) oxygen b) nitrogen c) chlorine d) helium 28- ………………….. is considered from the compounds. a) ozone b) iron c) mercury d) indigo dye 29- The number of atoms in sulphuric acid molecule H2SO4 is …………………… a) 5 b) 8 c) 7 d) 6 30- The molecules of the following organic compounds consists of thousands of atoms except …………………… a) hemoglobin b) plastic polymer c) methane d) vitamin D 31- An atom of ………….. changes into positive ion when it loses an electron a) Metal b) Non-metal c) Inert gas d) Halogens 32- An atom of …………… changes into negative ion when it gains an electron a) Alkaline earth metals b) Alkali metals c) Inert gas d) Halogens 1st Term (2024/2025) -8-  33- The number of electrons in the potassium ion (19K) is …………… electron a) 8 b) 18 c) 19 d) 20 38- The number of electrons in outermost energy level of the oxygen ion (8O) is..… electron a) 8 b) 7 c) 9 d) 10 39- The number of energy levels in the sulphur ion (16S) is ………… than the number of energy levels in its atom a) Greater b) Less c) Equal d) Twice 40- The bond formed between alkali element and halogen element is……………… a) Single covalent b) Double covalent c) Triple covalent d) Ionic 41- The molecular formula of a compound resulting from the combination of an element (X) from alkali metals with an element from halogens (Y) a) YX2 b) YX c) X2Y d) XY 42- The element whose atomic number is (17) forms a covalent bond with the element whose atomic number is………………… a) 1 b) 11 c) 12 d) 13 43- An atom of element (A) from the fifth group is linked to three hydrogen atoms to form a compound with the formula…………… a) AH b) HA c) HA3 d) AH3 And the bond in the that molecules is……………… a) Single covalent b) Double covalent c) Triple covalent d) Ionic 44- The number of bonds in a methane molecule is ……. single covalent bonds. a) One b) Two c) Three d) Four 45- Which of the following represents an ionic bond? 1st Term (2024/2025) -9- 46- The ion whose nucleus contains 27 nucleons, including 14 neutrons, has the symbol.. a) SI+4 b) Al+3 c) Mg+2 d) Na+1 47- The number of energy levels in a hydrogen ion is ………………… its atom a) Greater than b) Less than c) Equal to d) Twice 48- A positive electric charge is formed at the rod that made of ……………… when we rub it with a piece of silk. a) Glass b) Ebonite c) Copper d) Wood 49- When we rub a rod of ebonite with silk, ………………… transferred from silk to ebonite a) Protons b) Electrons c) Neutrons d) Atoms 50- A rod made of……………… is charged with a static charge when rubbed and provided that it is insulated hand held part a) Iron b) Glass c) Ebonite d) Plastic 51- The electrostatic series is the arrangement of some materials according to the ease of losing ………………… from them. a) Protons b) Electrons c) Neutrons d) Molecules 52- To protect constructions and buildings from lightning strikes, ……….. is used. a) Coulomb meter b) Electroscope c) Lightning rod d) Voltmeter 53- The ………………… device is used to indicate the electrical state of the body a) Hoffman voltmeter b) Electroscope c) Lightning rod d) Voltmeter 54- The weak electric charge is measured by………………… device a) Coulombmeter b) Lightning rod c) Electroscope d) Voltmeter 55- All of the following are forms of artificial magnets except... a) Magnetic needle b) Bar magnet c) Horseshoe d) Aluminum piece 56-…………………… is from magnetic materials a) Gold b) Silver c) Copper d) Cobalt 57-……………………is from non-magnetic materials a) Iron b) Nickel c) Aluminum d) Cobalt 58-……………………is an ancient tool used to determine directions. a) Compass b) Hourglass c) Sundials d) Balance 1st Term (2024/2025) - 10 -  59-The strength of the magnet increases in the………………… of the magnet a) Middle b) Edge c) Side d) Surface 60-The magnetic field lines crowd together at…………………… a) North Pole only b) North and South Poles c) Magnet tip d) South Pole only 61- What is the ratio of an object's mass on the surface of the Moon to its mass on the surface of the Earth. a) 1:6 b) 6:1 c) 1:1 d) 6:5 62- All the following change when an object moves from one place to another, except ……. a) weight. b) mass. c) earth's gravitational force on it. d) intensity of the field acting on it. 63- An object with a mass of 26 kg has a weight of 200 N on the surface of a planet. The gravitational field intensity on the planet's surface is ……… a) 5200 N/kg b) 250 N/kg c) 7.7 N/kg d) 0.13 N/kg 64- Earth's gravitational pull on an object is measured in the unit of …………. a) Coulomb. b) Kilogram. c) Newton. d) Newton/kilogram. -------------------------------------------------------------------------------------------------------------------- Q(4): Give reasons for: 1- The nucleus of the atom is positively charged. …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. 2- The mass of the atom is concentrated in its nucleus. …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. 3- The atom is electrically neutral. …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. 4- Atomic mass equals atomic number in hydrogen atom. …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. 1st Term (2024/2025) - 11 - 5- The energy level (L) is saturated with 8 electrons. …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. 6- Atoms of the same element may have different forms having the same atomic number and different atomic masses. …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. 7- 20Ca is from alkaline Earth metals. …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. 8- The valency of inert gases is zero …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. 9- 17Cl is from nonmetals. …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. 10- 9F is from halogens. …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. 11- 20Ca is considered a metal element. …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. 12- Seawater is considered a homogeneous mixture. …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. 13- Wood floats on the surface of the water while iron sinks in it. …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. 14- Iron filings can be easily separated from flour …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. 1st Term (2024/2025) - 12 - 15- Nitrogen is used to fill car tires instead of air. …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. 16- Helium gas is used to fill balloons. …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. 17- The bond in the sodium chloride molecule is ionic. …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. 18- The bond in the oxygen molecule is double covalent. …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. 19- When a metal loses an electron, it turns into a positive ion. …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. 20- When a halogen gains an electron, it turns into a negative ion. …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. 21- The electrostatic electricity is called static electricity …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. 22- The glass rod becomes positively charged when rubbed with silk. …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. 23- Iron is from magnetic materials. …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. 24- Silver is not attracted to the magnet. …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. 1st Term (2024/2025) - 13 -  25- Satellites do not deviate from their orbits around Earth. …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. 26- The presence of two types of field forces in an atom. …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. -------------------------------------------------------------------------------------------------------------------- Q(5): Put () in front of the correct sentence or () in front of the wrong ones: 1- The atom is the building unit of the matter ( ) 2- Electrons are found inside the nucleus ( ) 3- Four main energy levels revolve around the nucleus ( ) 4- The charge of protons is larger than electrons ( ) 5- The chemical symbol of sodium element is S ( ) 6- The atomic mass is larger than atomic number for all elements ( ) 7- The third energy level is saturated with 18 electrons ( ) 8- The energy level K is the largest level in energy ( ) 9- The electronic configuration for an element that contains 15 neutrons and 14 protons Is distributed in three levels ( ) 10- The outermost energy level of 12Mg contains 2 electrons ( ) 11- Methane is considered from inorganic compounds. ( ) 12- Nitrogen is used in filling car tires. ( ) 13- Density and melting points are from the chemical properties of the matter. ( ) 14- From organic compounds is NaHCO3. ( ) 15- Ionic bond occurs between a nonmetal and a nonmetal. ( ) 16- Covalent bond occurs between two non-metals. ( ) 17- The bond in the sodium molecule is double covalent bond. ( ) 14- The outermost energy level in the nitrogen ion (7N) contains 5 electrons. ( ) 15- The closest inert gas to the sodium atom (11Na) is helium. ( ) 16- Wood is from materials that don’t conduct electricity. ( ) 17- In electrostatic coating, the object to be coated is charged with negative electric charge. ( ) 1st Term (2024/2025) - 14 -  18- Magnetism is a visible force which affects some metallic objects. ( ) 19- By increasing magnetic force, the ability to attract magnetic substances increases. ( ) 20- The phenomenon of tides occurs periodically once every 24 hours. ( ) 21- Collision forces affect objects within their field, while gravitational forces affect objects only when they are in contact. ( ) 22- Magnetic field lines represent Earth's gravitational force, which pulls all objects downward towards the Earth's center. ( ) 23- Stars are formed due to the collapse of a massive planet at the end of its life. ( ) -------------------------------------------------------------------------------------------------------------------- Q(6): Write the symbols of the following elements: 1- Zinc 2- Potassium 3- Silicon 4- Gold 5- Silver 6- Copper 7- Phosphors 8- Lead 9- Mercury 10-Chromium 11-Carbon 12- Sodium -------------------------------------------------------------------------------------------------------------------- Q(7): Answer the following: A) An element (X), its electrons are distributed in two energy levels and the outermost energy level contains 4 electrons and there are 6 neutrons in its nucleus 1- Show by drawing the electronic configuration for this element. …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. …………………………………………………………………………………………………….. 2- Show by drawing Lewis-dot structure for this element. ……………………………………………………………………………………………………. ……………………………………………………………………………………………………. ……………………………………………………………………………………………………. 3- Find its atomic mass: ……………………………… 4- Write the symbol of this element indicating the number of both A and Z: …………….. 1st Term (2024/2025) - 15 -  B) The opposite figure represents the electrons in outermost energy level by Lewis structure for an element locates in the third period, find: 1- The atomic number: ………………………. 2- The valency: ……………………. 3- Type of element : …………………… C) The opposite figure represents the electronic configuration of element X, find: 1- The atomic number: …………….. 2- The location of the element in the modern periodic table ………………………………………………………………………….. ………………………………………………………………………….. 3- The type of element: ………………………………… 4- The valency: …………………………………………. D) An object with a mass of 30 kg on the Moon's surface, calculate its weight on: (Given that the Earth's gravitational field intensity = 10 N/kg) 1) Earth's surface. …………………………………………………………………………………………………… 2) The Moon's surface. …………………………………………………………………………………………………… E) The opposite figure represents the orbits of some planets around the sun: (1) What are the two factors affecting the gravitational force between the sun and planet (X)? ………………………………………………………………… ………………………………………………………………… (2) If the mass of planet (Y) = the mass of planet (Z), which planet has a stronger gravitational force with the sun? Why? ……………………………………………………………………………………………… 1st Term (2024/2025) - 16 -  Units (3), (4) Q (1): Write the scientific term: 1- The building unit of living organism. (………….……) 2- Group of similar cells that work together and perform one function. (………….……) 3- Group of different tissues that work together and perform one function. (………….……) 4- Group of different organs that work together. (…………….….) 5- Arrangement of living organisms into groups according to their similarities and differences to ease their study and identification. (………….…..…) 6- Undifferentiated cells can transform into all differentiated cells of the body. (………….…) 7- Simple organisms whose body consists of a single, unspecialized cell. (………….………………) 8- Complex organisms consisting of many cells that are distinguished and specialized in their work. (………….………………….) 9- The process by which a living organism obtains the materials used to build its body & energy. (………….………….……) 10- The substance that the plant makes and form which they obtain energy. (………………...) 11- The process by which a plant converts light energy into chemical energy in the presence of water and carbon dioxide gas. (…………………………) 12- A process by which a living organism gets rid of harmful waste and excess materials the body does not need. (…………………………) 13- Specialized cells in opening and closing stomata in plants. (…………………………) 14- Plants that open their leaves during the day and close them at night. (………………………) 15- Plants that move with the movement of the sun. (…………...…………) 16- Organisms that breathe through skin and lungs. (……………………..) 17- The organ that gets rid of excess water, salts and urea in the form of urine. (……………….) 18- Rocky planets with solid surfaces. (…………...…………) 19- Gaseous planets with no volcanoes. (…………...…………) 1st Term (2024/2025) - 17 - 20- Imaginary straight line extending from the North pole to the South pole, passing through Earth's center. (…………...…………) 21- The Sun's appearance in the sky throughout the day or the year as if its position is shifting from east to west while the Earth rotates around its own axis. (…………...…………) 22- An ancient solar clock that was used to determine the time based on the length and direction of the shadow resulting from the apparent motion of the Sun. (…………...…………) 23-An opaque body orbiting the Earth and is the closest celestial body to it. (…………...…………) 24-The phase in which the right half of the moon's side is illuminated. (…………...…………) 25- The phase of the moon on the 11th day of the Arabic month. (…………...…………) 26- The phase of the moon on the 26th day of the Arabic month. (…………...…………) 27-The phase in which the moon is completely dark. (…………...…………) 28- The phase of the moon at the end of the lunar month. (…………...…………) 29- A phenomenon that occurs once or twice a year during the full moon phase, where the moon disappears gradually out of sight. (…………...…………) 30- The dark area that does not receive light as a result of the presence of an opaque object in the path of the light rays. (…………...…………) 31- The partially illuminated area that receives some of the light rays, which surrounds the shadow created by the presence of an opaque object in the path of light rays. (…………...…………) 32- Object that allows the light to pass through it. (…………...…………) 33- Object that doesn’t allow the light to pass through it. (…………...…………) 34- A natural phenomenon that occurs when the earth, during its orbit around the Sun, aligns itself between the Sun and the moon, and so it blocks sunlight partially or completely from reaching the moon. (…………...…………) 35- A natural phenomenon in which the moon appears as a dark disc due to the absence of sunlight. 36- A natural phenomenon in which a part of the moon is located within the shadow of the earth, while the other part is in the penumbra of the earth. 1st Term (2024/2025) - 18 - Q(2): Complete the following sentences: 1- The building unit of a living organism is …………… 2- The human body consists of a group of ………………… 3- Each organ consists of a group of………………… 4- Classification is the arrangement of living organisms based on similarities and differences for the ease of.......................... 5- The classification of living organisms into …………………… and …………………… 6- Eukaryotes are divided into……………… and ………….……… 7- Unicellular organisms, such as Amoeba, ………..…………, and yeast fungus 8- Multicellular organisms, such as plants,………………..… and ……………..…… 9- …………….……… cells can transform into many different types of cells. 10- Stem cells are characterized by several properties, including their ability to………… through division and their ability to produce… …………… 11- Studying stem cells helps to enhance understanding of way of occurrence……….…., produce healthy cells to replace ………… ones, and test drugs before their use to determine their … …… 12- All living organisms share common characteristics such as Nutrition, ……………,......................., Excretion and ………… 13- Inorganic materials used in the process of photosynthesis …………… and ………… 14- The two substances produced by the process of photosynthesis ……..… and ……… 15- Light energy is converted into ……… energy stored in …………….. material in the photosynthesis process. 16- Carbon dioxide + water + sunlight …………………. + ………………. 17- …………….+…………….. carbon dioxide + water + energy 18- ………….... transports oxygen and digested food from the heart to the rest of the body. 19- Veins transport oxygen and nutrients from ………….to ……………. 1st Term (2024/2025) - 19 - 20- The transport process in plants is paralleled by the process of............ in human. 21- The transport system in the plant consists of …………... and …………… 22- Human gets rid of the exhaled air from ……………... and ………… 23- Human gets rid of excess water and salts through ………. in the form of urine 24- The plant gets rid of excess water and carbon dioxide through ……………. 25- ………………. controls the opening and closing of the stomata. 26- The respiratory organ in the cockroach is ………...... while the respiratory organ in the adult frog is................ and ……………... 27- Microbes are prokaryotes, including bacteria such as…………,……………… and…………… 28- Eukaryotic microbes include protozoa such as………… and fungi such as …………… and …………… 29- The plant needs nitrogen to form …………… that is used in…………… 30- …………………… lives on the roots of leguminous plants in special structures known as……… 31- Farmers leave the roots of beans in the soil after harvesting the crop to decompose by…………… into nitrogeneous compound 32- Yogurt is a protein-rich food essential for……………,………… and it is rich in calcium necessary for the health of…………… and …………… 33- Yogurt bacteria work to convert…………… into lactic acid 34- The green color in the blue cheese is caused by a fungus known as…………… 35- The English scientist…………… discovered that …………. fungus produces a substance that inhibits the growth and reproduction of a type of bacteria 36- The ………… substance is extracted from the fungus penicillium notatum, which is used to combat bacteria causing certain diseases such as diphtheria and…………… 37- Yeast is used in the production of…………… and ……………… 38- Harmful microbes can enter the human body through ……………or the ………… by penetrating the skin and reaching the bloodstream. 39- Symptoms of dysentery include …………….with …………… as well as loss of appetite. 1st Term (2024/2025) - 20 - 40- Symptoms of …………… include high fever, headache, and abdominal swelling. 41-The atmospheres of...............and.................contain methane gas. 42-........................ is known as the red planet, while............................ is known as the blue planet. 43-The apparent level of the Sun gradually rises between...................... and............................... 44-The planets revolve around the Sun in paths (orbits) that are in...............................shape 45-The group of inner planets includes Mars,......................Venus and............................ 46- Planet ……………… is the sixth in ascending order in terms of size, while planet ……………… is the fifth in distance from the Sun. 47- Neptune is known as the.............. planet, while Mars is known as the ……….. planet. 48- In the following figure: A- Partial lunar eclipse is observed when the Moon is in position ………………… while a total lunar eclipse is observed when the Moon is in position ……………… B- The Moon appears in position …………….. as …..........., and this is not considered an eclipse. --------------------------------------------------------------------------------------------------------------------------- Q(3): Choose the correct answer: 1- The building unit of a living organisms is…………… a) Matter b) Cell c) Atom d) Tissue 2- A group of different tissues is formed of……………… a) Organ b) System c) Organism d) Tissue 3- A group of organs form …………… a) Organ b) System c) Tissue d) Organism 4- Multicellular organisms such as……………… a) Bacteria b) Paramecium c) Amoeba d) Mushroom fungus 5- Unicellular organisms include all of the following organisms except…………… a) Bactria b) Paramecium c) Amoeba d) Mushroom fungus 1st Term (2024/2025) - 21 - 6- Euglena is a …………… organism a) Protozoa b) Prokaryotes c) Unicellular d) Multicellular 7- Mushroom fungus is a ……………… organism a) Protozoa b) Prokaryotes c) Unicellular d) Multicellular 8- Unicellular organisms ………………… a) Consist of many cells b) Their cells are specialized in their function c) Microscopic organisms, not visible to the naked eye d) Large organisms, visible to the naked eye 9- All the following are characteristics of the bird except…………… a) Multicellular organisms b) Their cells are specialized in their function c) Microscopic organisms, can’t be seen by the naked eye d) Large organisms, can be seen by the naked eye. 10- All the following are found in the cell of bird’s body except………… a) Cell wall b) Nucleus c) Golgi apparatus d) Centrosome 11- All the following are found in the cells of the bean plant except………… a) Cell wall b) Nucleus c) Golgi apparatus d) Centrosome 12- All the following is found in bacterial cells except……………… a) Cell wall b) Cytoplasm c) Golgi apparatus d) Plasma membrane 13- All the following organisms are consumers except…………… a) Human b) Birds c) Fish d) Plants 14- All the following organisms are producers except…………… a) Beans b) Cat c) Green algae d) Wheat 15- Chloroplast contains………………… which absorbs light energy from the sun a) Chlorophyll b) Nucleus c) Bacteria d) Mitochondria 16- The adult frog breathes by…………… a) Lungs b) Skin c) Skin and lungs d) Tracheal tubes 17- Insects breathe by……………… a) Lungs b) Skin c) Skin and lungs d) Tracheal tubes 18- Dogs breathe by…………… a) Lungs b) Skin c) Skin and lungs d) Tracheal tubes 19- Plants get oxygen from air by…………… a) Plastids b) Stomata c) Mitochondria d) Nucleus 1st Term (2024/2025) - 22 - 20- The process of food breakdown and energy release occurs in………… a) Plastids b) Stomata c) Mitochondria d) Nucleus 21- ………………… is used in purifying the blood from toxin a) Hoffmann voltammeter b) Electroscope c) Dialysis d) Coulomb meter 22-……………… plant open its leaves during the day and closes them at night a) Gazania b) Mimosa c) Sunflower d) Cotton 23-Leaves of …………… plant are drooping and dangling when you touch it a) Gazania b) Mimosa c) Sunflower d) Cotton 24- Sweat glands excrete…………… through the skin a) Urine b) Carbon dioxide c) Wastes d) Water 25- Amoeba moves by…………… a) Cilia b) Flagellum c) Pseudopodia d) Fins 26- Paramecium moves by…………… a) Cilia b) Flagellum c) Pseudopodia d) Fins 17- The solar system contains …………….. (a) eight stars. (b) millions of stars. (c) thousands of stars. (d) one star. 18- Earth is the ……………… planet from the sun. (a) third (b) fourth (c) fifth (d) sixth 19-Within the group of the outer planets, the order of Uranus is the..............planet in distance away from the sun. (a) first (b) third (c) fourth (d) last 20-The atmosphere of the planet of human life is mainly composed of............................... gases. (a) oxygen and carbon dioxide (b) oxygen and nitrogen (c) hydrogen and helium (d) hydrogen and methane 21-Day and night cycle occurs due to............... (a) the apparent height of the Sun. (b) Earth's rotation on its axis. (c) Earth's revolution around the Sun. (d) the apparent motion of the Sun. 22--The apparent height of the Sun is at its maximum during............... (a) winter. (b) spring. (c) summer. (d) autumn. 23-The phases of the moon occur during the lunar month as a result of ……….. (a) the Sun orbiting around the moon. (b) the moon orbiting around the Sun. (c) the earth orbiting around the moon. (d) the moon orbiting around the Earth. 24-The moon is in the …………….. phase when the right half of its side is illuminated. (a) waxing crescent (b) first quarter (c) wanning crescent (d) last quarter 1st Term (2024/2025) - 23 - 25-The moon takes approximately ……………. to one rotation around its axis. (a) 24 hours (b) 623.5 days (c) 88 days (d) 29.5 days 26-The closest celestial body to Earth is ………………. (a) the Sun. (b) Venus. (c) Mercury. (d) the moon. 27- The planets ………………. have many active volcanoes. (a) Mercury and Mars. (b) Venus and Earth. (c) Neptune and Mercury. (d) Earth and Jupiter. 28- When the Moon completes 1/2 of its orbit around the Earth, it appears as shown in the figure ……….. 29- On the night of the half of Sha'ban, a student looked at the sky and did not see the Moon at all. He concluded that the Moon is in the …………….. phase. (a) New Moon. (b) partial eclipse. (c) no eclipse. (d) total eclipse. 30- The number of daylight hours equals the number of nighttime hours in all the following days, except ……………… (a) May 29th (b) November 4th (c) February 15th (d) June 1st ---------------------------------------------------------------------------------------------------------------------- Q(4): Give reasons for: 1- Living organisms are classified according to similarities and differences. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… 2- Prokaryotes can’t be stem cells. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… 3- Paramecium and Euglena are considered as unicellular organisms. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… 4- Bacteria are considered as unicellular living organisms. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… 5- Bacteria differs from euglena, although they are both unicellular organisms ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… 1st Term (2024/2025) - 24 - 6- The lion is considered as a multicellular organism. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… 7- Green algae are considered as producer organisms. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… 8- Rabbits are considered as consumer organisms. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… 9- The food path in the digestive system is considered as a closed path. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… 10- Variations in the daylight and night hours throughout the seasons. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… 11- The shadow length at noon is the shortest. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… 12- The alternation of the four seasons. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… 13- There are different phases of the moon. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… 14- The moon can’t be seen during the new moon phase. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… 15- The Moon passes through the Gibbous phase twice during the Arabic month, while it passes through the New Moon phase only once. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… 16- Occurrence of shadow. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… 17- Although an object is in the path of light rays, no shadow is formed on a screen placed in front of it. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… 18- Lunar eclipse doesn’t occur every time the moon is in full moon phase. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… 1st Term (2024/2025) - 25 - Q(5): Compare between: 1- Prokaryotes and eukaryotes, in terms of a- Definition b- Characteristics …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………… 2- Animal cell, plant cell and bacterial cell in terms of: a- Cell wall b- Plasma membrane c- Centrosome d- Chloroplasts e- Golgi apparatus f- Vacuoles …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… 3- Producers and consumers in terms of: a) Definition b) Examples …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… 4- Amoeba and Paramecium in terms of: Means of movement …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… 1st Term (2024/2025) - 26 - 5- Dysentery and typhoid disease in terms of: a - The causative microbe b - Location of the microbe c - Methods of transmission of infection d - Symptoms e - Treatment method …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… 6- Jupiter and Mercury in terms of: Composition & Atmosphere. …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… 7- Winter & Summer in terms of: a- The time in the year. b- The day length and the night length. …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… 8- The full moon & the new moon phases. …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… 9- Shadow & penumbra. …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… 10- Total eclipse & partial eclipse in terms of: a- The moon’s position b- Its appearance. …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… ---------------------------------------------------------------------------------------------------------------------- Q (6): Cross the odd word from the following, then mention what connects the rest of the words: 1- Bacteria - Euglena - Paramecium – Amoeba …………………………………………… 2- Yeast fungus - Mushroom fungus - Bread mold fungus - Penicillium fungus……………… 3- Corn - Bird - Worms – Bacteria…………………………. 4- System - Cell - Rabbit – Organ………………………….. 5- Cell wall - Chloroplast - Centrosome - Golgi apparatus…………………………. 6- Cell membrane - Chloroplast - Centrosome - Golgi apparatus…………………… 1st Term (2024/2025) - 27 - 7- Cell wall - Does not contain a true nucleus - Plasma membrane – Mitochondria………….. 8- White blood cells - Red blood cells - Stem cells - Nerve cells……………………. 9- Lettuce - Wheat - Zucchini - Clover. ………………………. 10 Waxing Gibbous - Total Eclipse - Second Quarter/Full Moon. ………………………. 11- A gaseous planet - Has many active volcanoes - Contains a percentage of oxygen in its atmosphere - Planet of life. …………………………. ---------------------------------------------------------------------------------------------------------------------- Q (7): Answer the following questions: A) The opposite figure represents a living organism: 1- What is the name of this living organism? ……………………………………………………. 2- What is the classification of this living organism? ……………………………………………………. 3- What are the differences between this living organism and bacteria? …………………………………………………….. 4- What are the similarities and differences between this living organism and yeast fungus? …………………………………………………….. B) The opposite figure represents the structure of a plant cell: 1- Complete the data on the drawing? …………………………………………………….. …………………………………………………….. …………………………………………………….. …………………………………………………….. …………………………………………………….. …………………………………………………….. 2- Which of the previous parts is found in the cells of the rabbit's skin tissue? …………………………………………………….. 3- Which of the previous parts is found in prokaryotic cells? ……………………………………………………. 1st Term (2024/2025) - 28 - C) The following figure shows some of the transformations of stem cells. 1- Write the names of the cells in the figure? …………………………………………………………………………………………………. 2- Write the names of the organs in the figure? …………………………………………………………………………………………………. D) The following figure shows some living organisms: 1- What are kind of these organisms? …………………………………………………………………………………………………. 2- Why do we see these organisms under a microscope? …………………………………………………………………………………………………. 3- Which of these organisms considered from protozoa? …………………………………………………………………………………………………. 4- What is the name of these living organisms? …………………………………………………………………………………………………. 5- How do these organisms move? …………………………………………………………………………………………………. 1st Term (2024/2025) - 29 - E) The opposite figure represents a cross section of plant stem: 1- Complete the data on the drawing? …………………………………………………………………………………………………. 2- What is the benefit of each? …………………………………………………………………………………………………. F) Choose from columns (B) and (C) what suit them in column (A) : (A) (B) (C) (1) Last quarter phase. (1) Occurs on June 21st. (1) Preceded by winter. (2) Vernal Equinox. (2) Appears on the 21st of (2) 3/4 of Moon's part is (3) Waxing Crescent the Arabic month. illuminated from the Phase. (3) Appears on the first right side. (4) Summer solstice. day of Eid al-Fitr. (3) Daytime is longer (4) Appears at the end of than nighttime. the first week of the (4) of Moon's part is Arabic month. illuminated from the (5) Occurs on March 21st. left side. (5) Preceded by the new moon phase. ( 1/ ………… ) ( 2/ …………. ) ( 3/ ………….. ) ( 4/ …………..) 1st Term (2024/2025) - 30 -