Unit 9 Test - Waves -

The time needed for a wave to make one complete cycle is its (a)  

• frequency
• wavelength
• period

The distance between the crests of a wave is called its (a)  

• frequency
• wavelength
• period

The Hertz is a unit of (a)  

• frequency
• length
• mass
• time

Sound is an example of a

• standing wave
• longitudinal wave
• transverse wave

The Doppler effect is the change in observed frequency due to (a)   .

• the original frequency of the sourc
• the type of medium the wave is in.
• the motion of the source or observe

A certain ocean wave has a frequency of 3 hertz and a wavelength of 5 meters. What is the wave’s speed?

• 7 m/s
• 15 m/s
• 22 m/s

(a)   would be most likely to transmit sound with the highest speed.

• Steel in a bridge
• Wood in a cabinet
• Water in the ocean

Match the following mediums with their ability to transmit sound waves.

• Sound waves cannot travel.

• empty space

• Sound waves travel slower

• steel.

• Sound waves can travel fast.

• air.

Match the speed sound travels in

• Sound travels the fastest

• warm air.

• Sound travels slower

• cold air.

• Sound travels at 343m/s

• at room temperature (20 degs C)

Resonance occurs when

• sound makes multiple reflections.
• the amplitude of a wave is cancelled
• an object is forced to vibrate at its natural frequency.