Across
- 4. Using only 2 legs for walking
- 9. Wave that carries sound energy
- 11. The number of reoccurring patterns in a wave
- 12. Part of a wave that is more spread out
- 13. Type of boundary that creates an earthquake
- 14. Type of crust that we live on
Down
- 1. Type of boundary where plates move away from each other in different directions
- 2. Flowing liquid that moves due to a temperature change
- 3. Better adapted organisms will survive and reproduce
- 5. Height of the wave
- 6. When light bends through a medium
- 7. Wave that carries light energy
- 8. Distance between 2 crests or compressions in a wave
- 10. Gas that was started the evolution of multicellular organisms