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Practice Waves Test

1. Define a wave, period, frequency.
2. In the jug band lab what was the manipulated variable?
3. Middle C has a frequency of 262 Hz. What is its period?
4. Define crest, trough and wave velocity.
5. In the jug band lab what was the responding variable?
6. Define a transverse wave and longitudinal wave.
7. In the jug band lab what were the controlled variables?
8. A wave hit the shore every 5 seconds. What is the frequency of the waves?
9. What is diffraction?
10. If the speed of sound is 343 m/s and a sound has a frequency of 262 Hz, what is its wave length?
11. What is refraction?
12. Place a pencil or pen in a glass of water. Use the fact that the speed of light changes with the medium it is in to explain what you see.
13. In the elephant reading sound was bent upwards by temperature differences in the air close to the ground and the air a little ways above the ground. This bending of waves is called _______ .
14. Make a graph using the data below:
1. Air at 20 °C = 343 m/s
2. Helium = 965 m/s
3. Fresh water (25°C) = 1482 m/s
4. Sea water (25°C) = 1533 m/s
5. Wood = 3828 m/s
6. Steel = 5960 m/s

15. Sound is a _______________________ wave.
16. Estimate the frequency of this wave captured by the TI-83 and CBL.

17. The diagram on the right is an example of __________________.
18. Use the graph to estimate the speed of sound in the waters of the Great Salt Lake. The salinity of the Great Salt Lake is approx. 13%