Energy

5. Energy that travel in waves, through matter or even empty space.
7. Energy from the sun
8. The ability to do work, which is the ability to make things move or change.
11. A cell, also known as a solar cell, which can change sunlight energy into electricity.
12. The release of unwanted materials into the environment
14. Reflects and focuses sunlight onto a fluid filled pipe
15. The surroundings of all living things.
16. A fuel and energy resource that formed over millions of years from the decayed remains of ancient plants and animals
17. Any material from living things that can be used as an energy source.
19. The energy stored in bonds that hold atoms together.
20. The energy of moving electrical charges, specifically electrons.
21. Energy stored in the nucleus of an atom.

1. A change from one form of energy to another. All energy can be transformed into other forms.
2. Energy of moving water
3. The energy of moving particles like atoms and molecules
4. A resource that can be replaced as it is used or cannot be used up.
6. They store electrical energy produced by solar cells
9. Heat energy from inside the Earth that can be used to heat buildings and produce electricity.
10. A resource that is used much faster than it can be replaced
13. Energy of moving air
18. The energy of moving objects like a car or soccer ball