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Questions and Answers
Which of the following are the reactants of photosynthesis?
Which of the following are the reactants of photosynthesis?
Cellular respiration only occurs in animals.
Cellular respiration only occurs in animals.
False (B)
What two products are created by photosynthesis that are used in cellular respiration?
What two products are created by photosynthesis that are used in cellular respiration?
Glucose and oxygen
In a predator-prey relationship, if the prey population increases the predator population will likely ______.
In a predator-prey relationship, if the prey population increases the predator population will likely ______.
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Match the following ecological roles with the correct descriptions:
Match the following ecological roles with the correct descriptions:
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Which of the following best describes mutualism?
Which of the following best describes mutualism?
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Abiotic factors in an ecosystem include competition and disease.
Abiotic factors in an ecosystem include competition and disease.
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What is the primary form of energy produced by cellular respiration?
What is the primary form of energy produced by cellular respiration?
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Which of these describes commensalism?
Which of these describes commensalism?
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The phosphorus cycle includes an atmospheric component.
The phosphorus cycle includes an atmospheric component.
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What is the term for a non-native species that causes harm to its new environment?
What is the term for a non-native species that causes harm to its new environment?
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A rapid population increase under ideal conditions is represented by a ______ growth curve.
A rapid population increase under ideal conditions is represented by a ______ growth curve.
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Match the following terms with their descriptions:
Match the following terms with their descriptions:
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Which sequence correctly outlines the key processes of the nitrogen cycle?
Which sequence correctly outlines the key processes of the nitrogen cycle?
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Bioaccumulation refers to the increase in toxin concentration as it moves up the food chain.
Bioaccumulation refers to the increase in toxin concentration as it moves up the food chain.
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What is the definition of carrying capacity?
What is the definition of carrying capacity?
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What happens to a glass rod when it is rubbed with silk?
What happens to a glass rod when it is rubbed with silk?
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In a series circuit, the voltage is the same across all components.
In a series circuit, the voltage is the same across all components.
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What is the formula for calculating the efficiency of a device?
What is the formula for calculating the efficiency of a device?
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According to Ohm's Law, the voltage (V) is equal to the current (I) multiplied by the ______.
According to Ohm's Law, the voltage (V) is equal to the current (I) multiplied by the ______.
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Match the following energy sources with their type:
Match the following energy sources with their type:
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A 1500 W appliance is used for 3 hours, and the cost of electricity is $0.10/kWh. What is the total cost?
A 1500 W appliance is used for 3 hours, and the cost of electricity is $0.10/kWh. What is the total cost?
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Grounding an object causes it to become negatively charged.
Grounding an object causes it to become negatively charged.
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What type of material allows electrons to flow freely?
What type of material allows electrons to flow freely?
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What is the mass number of an atom?
What is the mass number of an atom?
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Reactivity increases down Group 17 (halogens).
Reactivity increases down Group 17 (halogens).
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What is the charge of an anion?
What is the charge of an anion?
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A mixture that has a uniform composition throughout is considered to be ______.
A mixture that has a uniform composition throughout is considered to be ______.
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The density of a substance is calculated using which formula?
The density of a substance is calculated using which formula?
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A compound is made up of only one type of atom
A compound is made up of only one type of atom
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What are the three subatomic particles?
What are the three subatomic particles?
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Which of the following best defines an Astronomical Unit (AU)?
Which of the following best defines an Astronomical Unit (AU)?
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Solar eclipses are visible from anywhere on Earth where it is nighttime.
Solar eclipses are visible from anywhere on Earth where it is nighttime.
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Name one reason why ancient cultures studied the night sky.
Name one reason why ancient cultures studied the night sky.
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The _______ is a massive system of stars, gas and dust bound together by gravity.
The _______ is a massive system of stars, gas and dust bound together by gravity.
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Match the following theories/concepts with their definitions:
Match the following theories/concepts with their definitions:
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What is the primary cause of Earth's seasons?
What is the primary cause of Earth's seasons?
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Inner planets are primarily composed of gasses such as hydrogen and helium.
Inner planets are primarily composed of gasses such as hydrogen and helium.
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What is the name of the robotic arm used on the Space Shuttle?
What is the name of the robotic arm used on the Space Shuttle?
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A celestial object is any ______ object found in space.
A celestial object is any ______ object found in space.
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Match each planet type with its characteristics:
Match each planet type with its characteristics:
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Which of the following is NOT a challenge astronauts face in space?
Which of the following is NOT a challenge astronauts face in space?
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Pluto is classified as a planet since it is spherical and orbits the Sun.
Pluto is classified as a planet since it is spherical and orbits the Sun.
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What does Earth's rotation cause?
What does Earth's rotation cause?
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Photosynthesis is the process by which organisms break down glucose to produce energy.
Photosynthesis is the process by which organisms break down glucose to produce energy.
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The process of ______ releases carbon dioxide and water, which are used in photosynthesis.
The process of ______ releases carbon dioxide and water, which are used in photosynthesis.
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Which of the following organisms are capable of carrying out photosynthesis?
Which of the following organisms are capable of carrying out photosynthesis?
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Match the following trophic levels with their corresponding examples:
Match the following trophic levels with their corresponding examples:
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Which of the following describes a symbiotic relationship where both organisms benefit?
Which of the following describes a symbiotic relationship where both organisms benefit?
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Which of the following is NOT a key process in the nitrogen cycle?
Which of the following is NOT a key process in the nitrogen cycle?
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Invasive species always have a negative impact on the ecosystem they invade.
Invasive species always have a negative impact on the ecosystem they invade.
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What is the term for the build-up of toxins in an organism over time?
What is the term for the build-up of toxins in an organism over time?
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The maximum population size an environment can support sustainably is called the ______.
The maximum population size an environment can support sustainably is called the ______.
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Match the following ecological relationships with their definitions:
Match the following ecological relationships with their definitions:
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Which of the following is NOT a way to conserve biodiversity?
Which of the following is NOT a way to conserve biodiversity?
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The biosphere includes all living organisms on Earth, as well as the physical environment they inhabit.
The biosphere includes all living organisms on Earth, as well as the physical environment they inhabit.
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What is the process called when excess nutrients in water cause algal blooms and reduce oxygen levels?
What is the process called when excess nutrients in water cause algal blooms and reduce oxygen levels?
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The ______ series lists materials based on their tendency to gain or lose electrons.
The ______ series lists materials based on their tendency to gain or lose electrons.
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What is the mass number of an atom if it has 12 protons and 14 neutrons?
What is the mass number of an atom if it has 12 protons and 14 neutrons?
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Anions are formed by losing electrons.
Anions are formed by losing electrons.
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What are the chemical properties that describe a substance's ability to react?
What are the chemical properties that describe a substance's ability to react?
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The formula for density is Density = Mass/_______.
The formula for density is Density = Mass/_______.
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Match the following groups of elements with their characteristics:
Match the following groups of elements with their characteristics:
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What charge does glass acquire when rubbed with silk?
What charge does glass acquire when rubbed with silk?
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Electric charges of the same type attract each other.
Electric charges of the same type attract each other.
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What is the main advantage of using renewable energy sources?
What is the main advantage of using renewable energy sources?
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The efficiency can be calculated using the formula Efficiency (%) = (Total Energy Input ______________) × 100.
The efficiency can be calculated using the formula Efficiency (%) = (Total Energy Input ______________) × 100.
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Match the following materials with their classification:
Match the following materials with their classification:
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Which of the following formulas is used to calculate the cost of using an electrical appliance?
Which of the following formulas is used to calculate the cost of using an electrical appliance?
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In a series circuit, the current is the same throughout the circuit.
In a series circuit, the current is the same throughout the circuit.
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What is the total resistance in a series circuit with three resistors of 2Ω, 3Ω, and 5Ω?
What is the total resistance in a series circuit with three resistors of 2Ω, 3Ω, and 5Ω?
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The three main non-renewable energy sources are coal, oil, and __________.
The three main non-renewable energy sources are coal, oil, and __________.
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Which of the following is NOT a method for saving energy?
Which of the following is NOT a method for saving energy?
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What is the unit of measurement for current?
What is the unit of measurement for current?
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Increased temperature generally decreases the resistance of a conductor.
Increased temperature generally decreases the resistance of a conductor.
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What is the main difference between static electricity and current electricity?
What is the main difference between static electricity and current electricity?
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The discovery of the electron was made by ______.
The discovery of the electron was made by ______.
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Match the following scientists with their contributions to atomic theory:
Match the following scientists with their contributions to atomic theory:
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Which of the following factors does NOT affect resistance?
Which of the following factors does NOT affect resistance?
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In the Bohr model of the atom, electrons orbit the nucleus in fixed shells.
In the Bohr model of the atom, electrons orbit the nucleus in fixed shells.
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In standard atomic notation, what does 'Z' represent?
In standard atomic notation, what does 'Z' represent?
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The formula for calculating the mass number is the number of protons plus the number of ______.
The formula for calculating the mass number is the number of protons plus the number of ______.
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How many neutrons are in an atom of Carbon with the atomic number of 6 and mass number of 12?
How many neutrons are in an atom of Carbon with the atomic number of 6 and mass number of 12?
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Flashcards
Photosynthesis
Photosynthesis
The process by which plants, algae, and some bacteria convert light energy into chemical energy stored in glucose.
Cellular Respiration
Cellular Respiration
The process by which organisms break down glucose to produce energy (ATP).
Producers
Producers
Organisms that create energy-rich compounds via photosynthesis.
Primary Consumers
Primary Consumers
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Secondary Consumers
Secondary Consumers
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Tertiary Consumers/Top Carnivores
Tertiary Consumers/Top Carnivores
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Parasitism
Parasitism
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Mutualism
Mutualism
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Carrying Capacity
Carrying Capacity
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Invasive Species
Invasive Species
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Nitrogen Cycle
Nitrogen Cycle
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Bioaccumulation
Bioaccumulation
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Biomagnification
Biomagnification
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Electrostatic Series
Electrostatic Series
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Triboelectric Series (Top)
Triboelectric Series (Top)
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Triboelectric Series (Bottom)
Triboelectric Series (Bottom)
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Electron Affinity
Electron Affinity
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Power (kW)
Power (kW)
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Efficiency
Efficiency
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Ohm's Law
Ohm's Law
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Series Circuit (Current)
Series Circuit (Current)
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Parallel Circuit (Current)
Parallel Circuit (Current)
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What is an Astronomical Unit (AU)?
What is an Astronomical Unit (AU)?
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What is the Asteroid Belt?
What is the Asteroid Belt?
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What are Constellations?
What are Constellations?
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What is a Lunar Eclipse?
What is a Lunar Eclipse?
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What is a Solar Eclipse?
What is a Solar Eclipse?
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Atomic Number
Atomic Number
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Mass Number
Mass Number
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Number of Neutrons
Number of Neutrons
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Reactivity
Reactivity
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Group
Group
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Period
Period
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Particles of Matter
Particles of Matter
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Physical Properties
Physical Properties
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Earth's Axis
Earth's Axis
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Earth's Tilt
Earth's Tilt
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Inner Planets
Inner Planets
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Outer Planets
Outer Planets
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Celestial Object
Celestial Object
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Earth's Rotation
Earth's Rotation
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Earth's Revolution
Earth's Revolution
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Kuiper Belt
Kuiper Belt
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What is photosynthesis?
What is photosynthesis?
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What is cellular respiration?
What is cellular respiration?
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How are photosynthesis and respiration related?
How are photosynthesis and respiration related?
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What are producers?
What are producers?
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What are primary consumers?
What are primary consumers?
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What are secondary consumers?
What are secondary consumers?
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What are tertiary consumers?
What are tertiary consumers?
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Commensalism
Commensalism
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Exponential Growth
Exponential Growth
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Phosphorus Cycle
Phosphorus Cycle
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Carbon Cycle
Carbon Cycle
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Water Cycle
Water Cycle
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Eutrophication
Eutrophication
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Law of Electric Charges
Law of Electric Charges
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Conductors vs. Insulators
Conductors vs. Insulators
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Electric Current
Electric Current
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Resistance
Resistance
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Potential Difference (Voltage)
Potential Difference (Voltage)
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Static Electricity
Static Electricity
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Current Electricity
Current Electricity
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Plum Pudding Model
Plum Pudding Model
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Bohr Model
Bohr Model
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Bohr-Rutherford Diagram
Bohr-Rutherford Diagram
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Standard Atomic Notation
Standard Atomic Notation
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Study Notes
Photosynthesis and Cellular Respiration
- Photosynthesis is the process where plants, algae, and some bacteria convert light energy into chemical energy stored in glucose.
- The word equation for photosynthesis is: Carbon dioxide + Water + Light energy → Glucose + Oxygen
- The reactants in photosynthesis are carbon dioxide (CO2), water (H2O), and light energy.
- The products of photosynthesis are glucose (C6H12O6) and oxygen (O2).
- Cellular respiration is the process by which organisms break down glucose to generate energy (ATP).
- The word equation for cellular respiration is: Glucose + Oxygen → Carbon dioxide + Water + Energy (ATP)
- The reactants in cellular respiration are glucose (C6H12O6) and oxygen (O2).
- The products of cellular respiration are carbon dioxide (CO2), water (H2O), and ATP (energy).
- Photosynthesis and cellular respiration are interconnected; the products of one become the reactants of the other, sustaining life.
Trophic Levels
- Producers: create energy-rich compounds via photosynthesis (e.g., plants, algae).
- Primary Consumers: Herbivores that feed on producers (e.g., rabbits, deer).
- Secondary Consumers: Carnivores or omnivores that feed on primary consumers (e.g., snakes, foxes).
Types of Interactions
- Parasitism: One organism benefits, the other is harmed (e.g., ticks on deer).
- Mutualism: Both organisms benefit (e.g., bees and flowers).
- Competition: Organisms compete for resources (e.g., food, habitat).
- Predation: One organism preys on another (e.g., lions hunting zebras).
- Commensalism: One organism benefits, the other is unaffected (e.g., barnacles on whales).
Population Dynamics
- Exponential Growth: rapid population increase under ideal conditions (J-shaped curve).
- Carrying Capacity: the maximum population size an environment can support sustainably (S-shaped curve).
Invasive Species
- Definition: Non-native species that disrupt ecosystems.
- Examples: Zebra mussels, kudzu vine, cane toads
Biogeochemical Cycles
- Nitrogen Cycle: Conversion of nitrogen between atmospheric, soil, and biological forms.
- Phosphorus Cycle: Movement of phosphorus through rocks, soil, water, and organisms.
Carbon Cycle
- Exchange of carbon among the atmosphere, oceans, soil, and living organisms. Includes photosynthesis and respiration.
Water Cycle
- Movement of water through evaporation, condensation, precipitation, and infiltration.
Earth's Spheres
- Biosphere: All living organisms.
- Atmosphere: Gaseous layer around Earth.
- Hydrosphere: Water bodies.
- Lithosphere: Earth's crust and landforms.
Eutrophication
- Excess nutrients (nitrogen and phosphorus) in water cause algal blooms, reducing oxygen levels and harming aquatic life.
Bioaccumulation and Biomagnification
- Bioaccumulation: Build-up of toxins in an organism over time.
- Biomagnification: Increase in toxin concentration as it moves up the food chain.
Biodiversity and Climate Change
- Loss of species due to habitat destruction, pollution, and climate shifts.
- Impacts ecosystems, food security, and global health.
Conservation of Biodiversity
- Habitat preservation and restoration.
- Establishing protected areas (national parks).
- Reducing pollution, recycling, and sustainable practices.
- Controlling invasive species.
Renewable and Non-Renewable Energy Sources
- Renewable: Solar, wind, hydro, geothermal, biomass.
- Advantages: Sustainable, less pollution.
- Disadvantages: Intermittent availability, high initial costs.
- Non-renewable: Coal, oil, natural gas, nuclear.
- Advantages: High energy output, reliable.
- Disadvantages: Limited supply, environmental damage.
Electrostatic Series
- A list of materials arranged based on their tendency to gain or lose electrons.
Ohm's Law and Circuits
- V = I x R (Voltage = Current x Resistance)
- V: Voltage (Volts, V)
- I: Current (Amperes, A)
- R: Resistance (Ohms, Ω\OmegaΩ)
- Series Circuits: Current (I) is the same throughout the circuit, and voltage (V) is divided across components.
- Parallel Circuits: Current (I) is divided across branches and voltage (V) is the same across each branch.
- Resistance (R) : total R = R1 + R2 + R3...
Factors Affecting Resistance
- Material: Conductors have lower resistance; insulators have higher resistance.
- Length: Longer wires have higher resistance.
- Thickness: Thicker wires have lower resistance.
- Temperature: Higher temperatures usually increase resistance.
Static vs. Current Electricity
- Static electricity: Accumulation of electric charge on a surface; charges do not flow.
- Current electricity: Continuous flow of electric charge through a conductor; requires a closed circuit.
Atomic Theory and Key Scientists
- John Dalton: Atoms are indivisible particles (incorrect), atoms of the same element are identical, atoms combine in whole-number ratios.
- J.J. Thomson: Discovered electrons using a cathode ray tube, proposed the 'Plum Pudding Model'.
- Ernest Rutherford: Conducted the gold foil experiment, discovered the nucleus.
- Niels Bohr: Proposed that electrons orbit the nucleus in specific energy levels.
Bohr-Rutherford Diagrams
- Represent the arrangement of subatomic particles (protons, neutrons, electrons) in an atom.
- Nucleus: Contains protons (+) and neutrons (neutral).
- Electron shells: Surround the nucleus, each holding a specific number of electrons.
Counting Atoms in a Compound
- Example: C6H12O6 (glucose).
Standard Atomic Notation
- Format: Z/AxX, where:
- A: Mass number (protons + neutrons).
- Z: Atomic number (protons).
- X: Element symbol.
Determining Atomic Details
- Atomic Number: Number of protons.
- Mass Number: Protons + Neutrons.
- Number of Neutrons: Mass Number - Atomic Number.
- Number of Electrons: Equal to protons in a neutral atom.
Reactivity and Atomic Structure
- Reactivity increases down Group 1 (alkali metals), decreases down Group 17 (halogens).
Particle Theory of Matter
- Matter is made up of tiny particles that are in constant motion and are attracted to one another.
Physical and Chemical Properties
- Physical properties: Quantitative (measurable) and Qualitative (Observable).
- Chemical Properties: Describe a substance's ability to react.
Subatomic Particles
- Protons: Positively charged, found in the nucleus.
- Neutrons: No charge, found in the nucleus.
- Electrons: Negatively charged and orbit the nucleus.
Families of Elements
- Alkali Metals (Group 1): Highly reactive, 1 valence electron.
- Alkaline Earth Metals(Group 2): Reactive, 2 valence electrons.
- Halogens (Group 17): Very reactive nonmetals, 7 valence electrons.
- Noble Gases (Group 18): Inert, full outer shell
Ions
- Cations: Positively charged ions (lose electrons).
- Anions: Negatively charged ions (gain electrons).
Mixtures and Pure Substances
- Mixtures: Combination of substances retaining their properties.
- Homogeneous: Uniform (e.g., saltwater).
- Heterogeneous: Not uniform (e.g., sand and water).
- Pure Substances: Fixed composition.
- Elements: Made of one type of atom.
- Compounds: Made of two or more elements bonded.
Density
- Formula: Density = Mass/Volume
- Units: g/cm³ or kg/m³
Drawing Common Compounds
- Example: Water (H₂O): Two hydrogen atoms bonded to one oxygen atom.
Pure Substances vs. Mixtures/Elements vs. Compounds
- Pure Substance: Uniform properties throughout.
- Mixture: Combination of substances.
- Element: Single type of atom.
- Compound: Two or more elements chemically combined.
Importance of Earth's Tilt
- Causes seasons by changing the angle of sunlight throughout the year.
Inner vs. Outer Planets
- Inner (Terrestrial): Small, rocky, closer to the Sun, higher densities (Mercury, Venus, Earth, Mars).
- Outer (Gas Giants): Large, gaseous, farther from the Sun, lower densities (Jupiter, Saturn, Uranus, Neptune).
Canadian Contributions to Space Exploration
- Canadarm, Canadarm2, Chris Hadfield, RADARSAT.
Challenges and Hazards for Astronauts
- Microgravity: Muscle and bone loss.
- Radiation: Exposure to harmful cosmic rays.
- Psychological stress: Isolation, confinement.
- Health issues: Altered fluid distribution.
Definition of Celestial Objects
- Celestial Objects are natural objects found in space (e.g., stars, planets, moons, asteroids, comets, galaxies)
Earth's Rotation and Revolution
- Rotation: Earth spins on its axis, causing day and night.
- Revolution: Earth orbits the Sun, taking 365.25 days and causing seasons.
Astronomical Unit
- The average distance from Earth to the Sun. (approximately 149.6 million km).
Asteroid Belt
- Located between Mars and Jupiter.
- Contains rocky remnants from the early solar system.
- Largest object: Ceres.
Constellations
- Patterns of stars in the night sky (e.g., Orion, Ursa Major, Scorpius).
Why Ancient Cultures Studied the Skies
- Navigation
- Tracking time
- Religious and cultural significance
Lunar and Solar Eclipses
- Lunar Eclipse: Earth passes between the Sun and the Moon, casting a shadow on the Moon.
- Solar Eclipse: The Moon passes between the Sun and the Earth, blocking sunlight.
Big Bang Theory
- Explained the origin of the universe.
- Universe began as a singularity and has been expanding.
Solar Nebula Theory
- Explained the formation of a solar system.
- Solar system formed from a rotating cloud of gas and dust about 4.6 billion years ago.
Galaxies
- A massive system of stars, planets, gas, dust, and dark matter bound by gravity.
- Types of Galaxies include: Spiral, Elliptical, Irregular.
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Description
Test your knowledge on key concepts of ecology and photosynthesis. This quiz covers topics such as reactants and products of photosynthesis, predator-prey relationships, and various ecological roles. Challenge yourself with questions about the nitrogen cycle, biotic and abiotic factors, and growth curves.