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It digest and absorbs most of the nutrients in food, such as carbohydrates, proteins and fats.
It digest and absorbs most of the nutrients in food, such as carbohydrates, proteins and fats.
It is a change of state in matter where gas has become liquid.
It is a change of state in matter where gas has become liquid.
Which of the following colors does not belong in the spectrum of white light?
Which of the following colors does not belong in the spectrum of white light?
Is used to coat the striking surface on the side of a matchbox.
Is used to coat the striking surface on the side of a matchbox.
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It is made up of two or more different types of elements that are chemically bonded.
It is made up of two or more different types of elements that are chemically bonded.
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It forms the building block of all elements and matter around us.
It forms the building block of all elements and matter around us.
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Are the substances produced by our body to speed up chemical reaction.
Are the substances produced by our body to speed up chemical reaction.
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These are needed for growth and repair of damaged tissues in our body
These are needed for growth and repair of damaged tissues in our body
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Helps our blood to clot so that we do not bleed too much when we have a wound.
Helps our blood to clot so that we do not bleed too much when we have a wound.
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Churns the food and has hydrochloric acids and enzymes.
Churns the food and has hydrochloric acids and enzymes.
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What is an element made up of?
What is an element made up of?
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The group of atoms chemically combined is known as
The group of atoms chemically combined is known as
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Too little of this causes anemia in which one lacks healthy red blood cells.
Too little of this causes anemia in which one lacks healthy red blood cells.
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Which of the following is not an example of a carbohydrates?
Which of the following is not an example of a carbohydrates?
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Is an arrangement of all the elements known to man in accordance with their increasing atomic number and recurring chemical properties.
Is an arrangement of all the elements known to man in accordance with their increasing atomic number and recurring chemical properties.
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The main function of this component of blood is to protect our body from infection and diseases by engulping foreign materials such as viruses and bacteria, and kill them.
The main function of this component of blood is to protect our body from infection and diseases by engulping foreign materials such as viruses and bacteria, and kill them.
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It is an example of beam of light where light rays meet at a point.
It is an example of beam of light where light rays meet at a point.
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An object in water seems to be nearer to the observer as a result of
An object in water seems to be nearer to the observer as a result of
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It carries tha blood away from the heart to the lungs and the rest of the body.
It carries tha blood away from the heart to the lungs and the rest of the body.
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The arrangement of particles in this state are in random.
The arrangement of particles in this state are in random.
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The movement of particles from a region of higher concentration to a region of lower concentration.
The movement of particles from a region of higher concentration to a region of lower concentration.
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It is a process where the solid has become a gas and bypassed the liquid state completely.
It is a process where the solid has become a gas and bypassed the liquid state completely.
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It produces bile to help in breakdown of fats.
It produces bile to help in breakdown of fats.
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State where the liquid has become gas
State where the liquid has become gas
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This vitamin is usually found in citrus fruits; it helps us prevent from falling ill easily.
This vitamin is usually found in citrus fruits; it helps us prevent from falling ill easily.
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What type of image is formed in a plane mirror?
What type of image is formed in a plane mirror?
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When light rays hit a dull or rough surface, light rays get reflected in all direction.
When light rays hit a dull or rough surface, light rays get reflected in all direction.
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Which of the following is not a non-luminous object?
Which of the following is not a non-luminous object?
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It is a type of ray that is going towards the mirror.
It is a type of ray that is going towards the mirror.
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When light rays hit a smooth surface, light rays are reflected in the same direction. All reflected rays are parallel.
When light rays hit a smooth surface, light rays are reflected in the same direction. All reflected rays are parallel.
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The total resultant effect of these forces exerted by all the gas particles is known as
The total resultant effect of these forces exerted by all the gas particles is known as
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The particle theory states that all matter is made up of small particles that are in constant random motion.
The particle theory states that all matter is made up of small particles that are in constant random motion.
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Gullet/ esophagus pushes the food down to the stomach through a process known as peristalsis.
Gullet/ esophagus pushes the food down to the stomach through a process known as peristalsis.
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A valve ensures that blood flows only in one direction in the heart.
A valve ensures that blood flows only in one direction in the heart.
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Red blood cells are responsible for carrying oxygen around the body. They contain a substance called hemoglobin.
Red blood cells are responsible for carrying oxygen around the body. They contain a substance called hemoglobin.
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Some white blood cells produce substances called anti bodies to kill bacteria.
Some white blood cells produce substances called anti bodies to kill bacteria.
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Atherosclerosis is caused by the build-up of substances, known as plaque, on the wall of the arteries.
Atherosclerosis is caused by the build-up of substances, known as plaque, on the wall of the arteries.
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A pinhole camera works based on the fact that light travels in a straight line.
A pinhole camera works based on the fact that light travels in a straight line.
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A non-luminous object gives a color because it is reflecting off certain light rays.
A non-luminous object gives a color because it is reflecting off certain light rays.
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Dmitri Ivanovich Mendeleev was a Russian chemist who was an important person in discovery of the modern periodic table.
Dmitri Ivanovich Mendeleev was a Russian chemist who was an important person in discovery of the modern periodic table.
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Chemical symbols are used to represent elements; it usually takes the first letter or first two letters of the element's name.
Chemical symbols are used to represent elements; it usually takes the first letter or first two letters of the element's name.
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During absorption, water and mineral salts will first enter the root hair cell. Next, the water and mineral salts will move into the neighboring root cells until they reach the transport tissue in the roots.
During absorption, water and mineral salts will first enter the root hair cell. Next, the water and mineral salts will move into the neighboring root cells until they reach the transport tissue in the roots.
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Incident ray is the type of ray that is going towards the mirror.
Incident ray is the type of ray that is going towards the mirror.
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When we place a capillary tube in colored water, the colored water moves up the capillary tube. The phenomenon of water rising up a thin tube is known as the capillary action.
When we place a capillary tube in colored water, the colored water moves up the capillary tube. The phenomenon of water rising up a thin tube is known as the capillary action.
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Light from the part of the straw that is in the water bends away from the normal as it enters the air and into our eyes
Light from the part of the straw that is in the water bends away from the normal as it enters the air and into our eyes
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As light rays travels across two transparent mediums, such as air and water, it bends.
As light rays travels across two transparent mediums, such as air and water, it bends.
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Xylem vessel transport water and dissolved mineral salts from the roots up the stems and to the leaves.
Xylem vessel transport water and dissolved mineral salts from the roots up the stems and to the leaves.
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The root hair grows outwards into the spaces between the soil particles, where there is water with dissolved mineral salts.
The root hair grows outwards into the spaces between the soil particles, where there is water with dissolved mineral salts.
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An object in the water seems to be nearer to the observer as a result of refraction.
An object in the water seems to be nearer to the observer as a result of refraction.
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The capillary have thin walls that allow the diffusion of gases and nutrients to occur at a faster rate.
The capillary have thin walls that allow the diffusion of gases and nutrients to occur at a faster rate.
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After the food has been breakdown into smaller pieces, it moves through a series of organ called alimentary canal.
After the food has been breakdown into smaller pieces, it moves through a series of organ called alimentary canal.
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When we do not consume sufficient nutrients from a particular food group or when our body is lacking a particular vitamin, we may develop nutritional deficiencies in our body.
When we do not consume sufficient nutrients from a particular food group or when our body is lacking a particular vitamin, we may develop nutritional deficiencies in our body.
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Nutrition is the process of getting food and turning it to living matter.
Nutrition is the process of getting food and turning it to living matter.
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Capillaries allow oxygen and dissolved nutrients to diffuse through them.
Capillaries allow oxygen and dissolved nutrients to diffuse through them.
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Arteries have valve.
Arteries have valve.
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Veins have the thickest walls among the blood vessels
Veins have the thickest walls among the blood vessels
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Divergent beams are forms when light rays move outward from the source.
Divergent beams are forms when light rays move outward from the source.
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Light travels in a straight line
Light travels in a straight line
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A magenta light filter will allow green light to pass through it.
A magenta light filter will allow green light to pass through it.
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The light of different colors travel at the same speed.
The light of different colors travel at the same speed.
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The phenomena of water rising up a thin tube is known as the capillary action
The phenomena of water rising up a thin tube is known as the capillary action
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If we shine a green light on the apple, the apple will appear black to us. This is because the apple only reflects red light, but not green light.
If we shine a green light on the apple, the apple will appear black to us. This is because the apple only reflects red light, but not green light.
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Anemia is a condition in which one's blood does not clot normally.
Anemia is a condition in which one's blood does not clot normally.
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Condensation happens when solid has become a gas and bypassed the liquid state completely.
Condensation happens when solid has become a gas and bypassed the liquid state completely.
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Cells form the building block of all elements and materials around us.
Cells form the building block of all elements and materials around us.
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The image formed in a pinhole camera is inverted.
The image formed in a pinhole camera is inverted.
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The image formed in the plain mirror is smaller than the actual object.
The image formed in the plain mirror is smaller than the actual object.
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The distance between the image and the mirror is the same as the distance between the actual object and the mirror.
The distance between the image and the mirror is the same as the distance between the actual object and the mirror.
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The angle between the normal and incident ray is called the angle of incidence
The angle between the normal and incident ray is called the angle of incidence
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Because of refraction, the object in the water seems to be closer to the water surface.
Because of refraction, the object in the water seems to be closer to the water surface.
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Light ray bend towards the normal as they travel from water into air.
Light ray bend towards the normal as they travel from water into air.
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Blood passes by the heart twice, once as deoxygenated blood and the other time as oxygenated blood.
Blood passes by the heart twice, once as deoxygenated blood and the other time as oxygenated blood.
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The wall of a capillary is one-cell thick.
The wall of a capillary is one-cell thick.
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Xylem vessels are thin tubes that can be found in the roots, stem and leaf veins
Xylem vessels are thin tubes that can be found in the roots, stem and leaf veins
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Too little vitamin D can cause rickets which leads to weakening or softening of bones.
Too little vitamin D can cause rickets which leads to weakening or softening of bones.
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Digestion breaks down food particles physically to be absorbed by the body.
Digestion breaks down food particles physically to be absorbed by the body.
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Give at least 3 characteristics of the image formed in a plane mirror.
Give at least 3 characteristics of the image formed in a plane mirror.
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State the two laws of reflection
State the two laws of reflection
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Give atleast 2 functions of the blood
Give atleast 2 functions of the blood
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Explain how temperature affects gas pressure.
Explain how temperature affects gas pressure.
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Describe how the structure of a leaf is adapted for photosynthesis.
Describe how the structure of a leaf is adapted for photosynthesis.
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Which organs are involved in the human digestive systems?
Which organs are involved in the human digestive systems?
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Give 5 examples of element in the periodic table and state their uses.
Give 5 examples of element in the periodic table and state their uses.
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Describe and draw the 3 examples of beams
Describe and draw the 3 examples of beams
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Explain how does light enable us to see.
Explain how does light enable us to see.
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Describe the difference between the regular and irregular reflection.
Describe the difference between the regular and irregular reflection.
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Give at least 3 signs of nutritional deficiency
Give at least 3 signs of nutritional deficiency
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Name at least 2 enzymes and describe its function
Name at least 2 enzymes and describe its function
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What are the colors of spectrum of white light?
What are the colors of spectrum of white light?
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What are the organs involve in human circulatory system?
What are the organs involve in human circulatory system?
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What happens to the right and left ventricles when the heart muscles are relaxed?
What happens to the right and left ventricles when the heart muscles are relaxed?
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Study Notes
Semester 1 Reviewer for G8
- Digestion and absorption of nutrients mostly occurs in the small intestine.
- Condensation is the change of state from gas to liquid.
- White light contains red, yellow, and green.
- Phosphorus coats the striking surface of matchboxes.
- A compound is formed from two or more different types of elements chemically bonded.
- An atom is the building block of matter and elements.
- Enzymes speed up chemical reactions in the body.
- Proteins are essential for growth and repair of tissues.
- Vitamins K helps blood clot.
- Stomach churns food and contains hydrochloric acid and enzymes.
- Elements are made up of atoms.
- Molecules are groups of atoms chemically combined.
- Iron is important for healthy red blood cells, and a lack of iron causes anemia.
- Carbohydrates include rice and sugar.
- The periodic table arranges elements by increasing atomic number and recurring properties.
- White blood cells defend against infection and disease.
Light and Reflection
- Light travels in a straight line.
- Reflection occurs when light strikes a surface at a point.
- Objects appear closer to viewers in water due to refraction.
- Veins carry blood from the body to the heart.
- Diffusion happens when particles move from high concentration to low concentration.
- Sublimation is the transition from solid to gas.
- Evaporation is the transition from liquid to gas.
- Substances necessary for health come from the breakdown of food.
- Liver produces bile, a substance that aids in fat digestion.
- Capillaries are thin walls where gases and nutrients are exchanged.
- Plane mirrors produce virtual images.
- Light striking a rough surface scatters it in different directions (irregular reflection).
- Regular reflection happens when light hits a smooth surface.
Circulatory System
- The heart has two ventricles (right and left).
- The circulatory system includes the heart and blood vessels.
- Blood transports nutrients and oxygen.
Digestion
- The digestive system includes the mouth, esophagus, stomach, liver, pancreas, intestines, rectum, and anus.
- Enzymes break down carbohydrates, fats, and proteins during digestion.
Other Science Facts
- Temperature increases gas pressure, while decreasing temperature decreases gas pressure.
- Leaves have a thin, broad structure to maximize surface area for photosynthesis.
- The diagram of a leaf is a representation of its characteristics.
- The periodic table lists various elements with their properties.
- Reflection, refraction and absorption of light contribute to several phenomenon.
- Capillary action helps water and nutrients be absorbed.
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Description
This quiz covers essential concepts in science for Grade 8 students, including topics on digestion, chemistry, biology, and the characteristics of light. Test your knowledge on the building blocks of matter, nutrient absorption, and chemical reactions in the body. Ideal for preparing for Semester 1 exams.
