Conservation of Energy

What is the Law of Conservation of Energy?

• Energy can be created and destroyed

• Energy can only be transformed from one form to another

• Energy can only be transformed into mechanical energy

• Energy can only be transformed into electrical energy

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What is the process by which plants convert sunlight into chemical energy?

• Decomposition

• Photosynthesis

• Mechanical energy

• Thermal energy

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What are some forms of energy that can be obtained from a house plant?

• Mechanical energy and thermal energy

• Chemical energy and electrical energy

• Electrical energy and mechanical energy

• Thermal energy and electrical energy

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What happens to the stored chemical energy in a plant when it is consumed by an animal?

• It is transformed into mechanical energy

• It is transformed into thermal energy

• It is transformed into electrical energy

• It is transferred to the animal for its energy needs

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What is electricity?

• A form of mechanical energy

• A form of thermal energy

• A form of chemical energy

• A form of energy that powers our modern world

How is electricity generated in power plants?

• By converting wind or solar power

• By converting mechanical energy

• By converting thermal energy

• By converting coal, natural gas, or renewable resources

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What happens when we switch on a light or plug in our devices?

• Electrons flow through wires

• Heat is generated

• Sound is produced

• Mechanical energy is transformed

What does the Law of Conservation of Energy state about the total energy within a system?

• It decreases as energy is transformed

• It increases as energy is transformed

• It remains constant even as energy changes form

• It is only applicable to plants

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