Across
- 4. light can travel through a ______
- 7. the cycle at which rocks change
- 8. rhymes with fraction
- 9. the type of energy that is infinite
- 10. radiant energy comes from this
- 11. this also keeps out electricity
- 12. how fast or slow something is
Down
- 1. again this keeps out electricity
- 2. this keep out electricity
- 3. the type of energy that's finite
- 5. this and number four are sound travels
- 6. anything that has mass and takes up space