Across
- 3. waves that must travel through a medium
- 5. when energy bounces off a material
- 7. least dangerous light waves to some animals
- 11. the amount of times a wave repeats
- 12. second most dangerous ray to some animals
- 13. when energy passes through a material
- 14. when the wave hits the equilibrium
- 16. matter that sticks together
- 17. Also known as light
- 21. "stuff"
- 22. when waves change direction when hitting a medium
- 23. how frequency is measured
- 25. when energy stays within a material
- 27. radiation from the sun (2 words)
- 29. the matter that waves travel through
- 30. the top of a wave
Down
- 1. a light that most animals can see (2 words)
- 2. it can't be created nor destroyed, but can be converted
- 4. lowest point of a wave
- 6. midpoint of a wave
- 8. waves travel differently based on the _____ of the matter they hit
- 9. the distance (height) from a midpoint
- 10. the distance from crest to crest or trough to trough
- 15. EM that is not visible to the nake
- 18. human waves
- 19. waves produced in nature
- 20. when energy transmits in a scattered arrangement
- 24. most dangerous rays
- 26. the second least dangerous light waves to some animals
- 28. a scale that classifies different ideas and things