Energy Conversions Worksheet
Grade 12 Science worksheet covering various forms of energy and their conversions, including real-world applications and calculations.
Includes
Standards
Topics
Energy Conversions
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Read each question carefully and answer to the best of your ability. Show all work for calculations.
1. Which of the following is the primary energy conversion that occurs in a solar panel?
Chemical energy to electrical energy
Light energy to electrical energy
Thermal energy to mechanical energy
Nuclear energy to thermal energy
2. In a hydroelectric power plant, what is the sequence of energy conversions?
Electrical → Mechanical → Potential → Kinetic
Kinetic → Potential → Mechanical → Electrical
Potential → Kinetic → Mechanical → Electrical
Mechanical → Electrical → Kinetic → Potential
3. The Law of Conservation of Energy states that energy cannot be created or , but can only be changed from one form to another.
4. In a combustion engine, energy stored in fuel is converted into thermal energy, which is then converted into mechanical energy.
5. Geothermal energy involves converting the Earth's internal heat into electrical energy.
True
False
6. Photosynthesis in plants converts chemical energy into light energy.
True
False
7. Describe the energy conversions that occur when a person rides a bicycle up a hill and then coasts down the other side.
Match each energy conversion example with the correct energy forms involved.
8. Burning wood
a. Electrical to Light and Thermal
9. Light bulb
b. Chemical to Thermal and Light
10. Wind turbine
c. Kinetic to Electrical
11. Observe the energy pyramid below. Explain how energy is transferred and converted through different trophic levels, and why the amount of usable energy decreases at each successive level.
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