Energy
Across
- 5. that travel through air or other medium
- 9. object that allows light waves to pass through
- 12. measured as distance between two adjacent crests
- 15. rise in temperature causes atoms and molecules to move faster
- 17. light waves bounce off something else
- 19. transverse wave consisting of electric and magnetic fields
- 21. light waves bend
Down
- 1. heat transfer in a fluid
- 2. increasing size of object when heat causes molecules to move farther apart
- 3. heat transfer through a vacuum
- 4. wave in which particles of the medium vibrate at right angles
- 6. object that allows a few light waves to pass through
- 7. An object that does not allow light waves to pass through
- 8. Portion of electromagnetic spectrum visible by humans
- 10. Pitch
- 11. heat transfer by molecules touching
- 13. movement of energy from warmer substance to colder one
- 14. disturbance or vibration of medium
- 16. Materials through which a wave travels
- 18. perceived frequency of sound
- 20. Volume of a wave, measured in decibels