Across
- 1. the stuff that everything is made of
- 4. material that energy easily passes through
- 7. Energy that can be seen as light
- 8. a material that is a poor conductor of energy
Down
- 2. energy that is used to generate other forms of energy
- 3. energy that makes things move
- 5. Energy that can be heard
- 6. Energy that can be felt as heat