Across
- 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.
Down
- 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