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- 1. Multiple Choice
Why are fossil fuels more widely used than solar energy?
Solar energy is harder to find.
Fossil fuels are much cheaper.
Fossil fuels are more abundant.
The sun's energy can never be harnessed.
- 2. Multiple Choice
Why is solar energy considered a renewable energy source?
You can get money back from the government if you put solar panels on your house.
Solar energy is cheaper than fossil fuels.
The sun's energy will not run out for billions of years.
Solar energy can be used to recharge batteries.
- 3. Multiple Choice
What device might you use to heat a building?
A thermal collector
A photovoltaic cell
A solar sail
A photon
- 4. Multiple Choice
Photovoltaic cells convert sunlight into
Heat
Motion
Light
Electricity
- 5. Multiple Choice
In the term "photovoltaic cell," what can you infer about the prefix "photo-?"
It refers to light
It refers to heat
It refers to electricity
It refers to motion
- 6. Multiple Choice
Which of the following is a true statement about semiconductors?
Electricity can pass through them easily
Electricity can pass through them with some effort
Electricity cannot pass through them at all
Solar energy can pass through them, but electric current cannot
- 7. Multiple Choice
Which of the following terms best describes an electrical current?
A flow of protons
A flow of atoms
A flow of electrons
A flow of neutrons
- 8. Multiple Choice
How much of the sun's energy can be converted to electricity by a photovoltaic cell?
One to two percent
15-20 percent
25-30 percent
50-55 percent
- 9. Multiple Choice
Which of the following terms best describes photovoltaic cells as they currently exist?
Inexpensive
Primitive
Backward
Inefficient
- 10. Multiple Choice
Which of the following cities would most likely make use of concentrating solar power plants?
London, UK
Seattle, Washington
New York, New York
Phoenix, Arizona
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