1. A 4 Hz wave travels on a Slinky. If the wavelength is 0.5 m, what is the speed of the waves on the Slinky?

2. A wave travelling 80 m/s has a wavelength of 3.2 m. What is the frequency of the wave?

3. The frequency of middle C on the piano is 261.6 Hz. What is the wavelength of sound with this frequency as it travels in air at room temperature?

4. The huge volcanic eruption on the island of Krakatoa, Indonesia, in 1883 was heard on Rodrigues island, 4,782 km away. How long did it take the sound to travel to Indonesia? (Hint: what is the formula for velocity?)

5. There are two different types of waves, one is _____________________ and the other is ___________________________. The difference between the two wave is __________________________________________________________________________________________________.

6. What is the reason sound speeds up when travelling through solid materials, such as railway tracks?

7. Explain what each of the following are, with respect to wave motion: cycle, period, frequency, amplitude, and wavelength.

8. An electric toothbrush completes 90 cycles (vibrations) per second. What is its frequency, and what is its period?

9. Does sound travel faster in cold weather or warm weather? Why?

10. Does sound travel father in cold weather or warm weather? Why