Across
- 5. liquid turning into a solid
- 7. variable that is affected by other variables
- 8. to pass from one place to another
- 10. layer of hot magma between Earth’s crust and core
- 11. the layer of rocks that forms Earth’s outer surface
- 14. negatively charged particle, moves around the outside of the nucleus
- 15. idea or conclusion that is drawn from observations
- 16. the smallest neutral particle of an element
- 17. non-renewable energy sources—primarily coal, oil (petroleum), and natural gas
- 18. the bending of light at the boundary where two mediums meet
- 19. rock made from the compaction of sediments
- 20. a substance combines or breaks to form a new substance
Down
- 1. regular, recurring event that is thought of as a disturbance.
- 2. something that a wave or light can travel through, example: water, air, ground
- 3. a location where two tectonic plates move toward each other
- 4. positively charged particle found in the nucleus
- 6. layer of gasses that surrounds the Earth
- 9. light bouncing off a surface
- 12. energy that produces no greenhouse gasses and generates constantly
- 13. measurement of how compact a substance is