18. Waves & Sound

Calculate the speed of longitudinal waves in granite, using Tables in Chapters 12 and 13.

For a longitudinal wave traveling through a medium, how is the $\mathrm{wavelength}$ determined?

Which of the following is an example of a longitudinal wave that can be found in the sea?

Which phenomenon distinguishes longitudinal waves from transverse waves?

Which combination of air conditions allows sound to travel fastest: warm and humid air, warm and dry air, cold and humid air, or cold and dry air?

Which type of wave requires matter to carry energy?

Which type of wave is primarily demonstrated when a slinky is stretched out and a pulse is sent along its length?

A sound wave is emitted at a frequency of 300 Hz in air at a 0°C. As the sound wave travels through the air, the temperature increases. What is the wavelength of the sound wave at the following temperatures?

a. 0°C
b. 20°C
c. 45°C

Which type of wave has oscillations that are parallel to the direction of wave propagation?

Which of the following best describes the difference between a longitudinal wave and a transverse wave?

A sailor strikes the side of his ship just below the surface of the sea. He hears the echo of the wave reflected from the ocean floor directly below 2.4 s later. How deep is the ocean at this point? (Use Tables 12–1 and 13–1.)