Across
- 1. How soft or loud a sound is
- 3. Material through which a wave travels
- 7. Energy transferred through space or other materials
- 9. How high or low a sound is
- 10. Electromagnetic radiation detectable by the human eye
- 13. Material that allows almost all light to pass through clearly
- 14. Light that humans make or operate
- 16. Opens or closes a circuit to control electricity
- 18. Materials that allow heat and electricity to pass through easily
- 19. Material that does not allow light to pass through
- 22. Measure of how hot or cold an object is
- 23. Form of energy that powers many devices
- 25. Materials that do not allow heat and electricity to pass through easily
- 28. Heat transfer through collisions between neighboring particles
- 29. Distance from the origin to the crest or trough
- 30. Uses electricity to produce light
Down
- 2. Waves that do not require a medium to travel
- 4. Path that allows electricity to flow
- 5. Distance between two crests or two troughs
- 6. Light that comes from nature
- 8. Carries electricity between parts of a circuit
- 11. Material that allows some light through, making objects appear blurry
- 12. Heat transfer through the movement of a fluid
- 15. Lowest point of a wave
- 17. A disturbance that transfers energy without permanently moving matter
- 20. Energy that moves from a hotter object to a cooler object
- 21. Waves that require a medium to travel
- 24. Highest point of a wave
- 26. Energy produced by vibrations
- 27. Supplies electrical energy in a circuit