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Ch.29 Powerpoint 2
| Question | Answer |
|---|---|
| 1.What is reflected sound? | An echo. |
| 2.The bending of a wave as it crosses the boundary between two media at an angle is called? | Refraction |
| 3.When sound energy is not reflected it is __________ or ___________. | absorbed; transmitted. |
| 4.What occurs in uneven winds or uneven temperature? | Sound Refraction |
| 5.The broken pencil is an example of what? | Refration of Light |
| 6.When light slows down, it bends ________ the normal. | Toward |
| 7.What is a mirage? | A distorted image caused by refraction of light in Earth's atosphere. |
| 8. The separation of light into a range of colors according to their frequencies is __________. | Dispersion |
| 9. What are the conditions to see a rainbow? | The sun must be shining in part of the sky, water droplets must be in the opposite part of the sky, and the sun must be behind you. |
| 10. ___________ occurs when the angle of incidence is larger than the critical angle. | Total internal reflection. |
| 11. The critical angle for glass is about ___. | 43 degrees. |
| 12. What are light pipes are another name for? | Optical fibers. |
| 13. ___________ are used by mechanics, machinists, and physicians. | Optical fibers. |
| 14. What is the study of the relective properties of surfaces? | Acoustics |
| 15. Light waves are faster in ________ and slower in _________. | Air; water. |
Created by:
cboxdorfer
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