Waves and EM Waves Review

A mechanical wave generally does NOT

• move the medium from one place to another.

• move through a medium.

• move through solids.

• disturb the medium.

A mechanical wave moves through a medium, which can be

• a) a solid

• b) a gas

• c) a liquid

• d) any state of matter

Which type of mechanical wave does not need a source of energy and medium?

• a) surface waves

• b) transverse waves

• c) longitudinal waves

• d) electromagnetic waves

Which wave causes the medium to vibrate only in a direction parallel to the wave's motion?

• surface wave

• longitudinal wave

• transverse wave

• all of the above

A disturbance sends ripples across water in a tub. These ripples are an example of a

• surface wave

• transverse wave

• longitudinal wave

• electromagnetic wave

When a surfer rides an ocean wave on her surfboard, she is actually riding on

• trough

• rarefaction

• compression

• crest

Figure 17-1 shows a wave movement during 1 second. What is the frequency of this wave?

• 2 Hz

• 2 m/s

• 0.5 s

• 1 Hz

A period is the length of time it takes for

• a disturbance to start a wave.

• two complete wavelengths to pass a fixed point.

• a wave to travel the length of a rope.

• one complete wavelength to pass a fixed point.

To find amplitude, measure

• rest position to crest

• rest position to trough

• neither of these will work

• both of these will work

To what is amplitude related?

• the amount of energy carried by the wave ONLY

• the maximum displacement from the rest position (ex. rest position-crest) ONLY

• neither of these

• the amount of energy carried by the wave and the maximum displacement from the rest position