Energy Unit Review

5. Energy type that is stored within a chemical substance.
6. A battery in a flashlight has ____ energy.
7. The study of energy.
12. This advanced technology combines the use of gasoline engines and electric motors for cars.
14. This energy source causes a great amount of pollution.
15. Biological materials that can be grown and harvested are ____ energy resources
17. This energy source uses methane from the burning of trash and sewage.
18. The world relies heavy on these 3 energy resources: Gas, Coal, and ___.

1. Over time people have used more energy, today one person uses more than one ____ times more energy than some of the earlier humans.
2. Energy in motion. Examples include: water flowing, moving car, moving wheel.
3. This energy type uses the SUN as its primary source.
4. Wind and moving water are examples of which energy type.
8. The Law of ______ of Energy states: Energy cannot be created or destroyed; however, it can be converted from one form to another.
9. Another name for heat energy.
10. An example of a renewable energy source.
11. This energy resource produces huge amounts of energy from small amounts of fuel but can be very dangerous.
13. Natural gas is mostly made up of a gas called ____.
16. The ability to do work