Waves and Sound Practice Assessment

The time it takes for a pendulum to swing to and fro is considered its

• frequency.

• period

• wavelength

• amplitude

2.The frequency of a wave is the inverse of its

• frequency

• period

• wavelength

• amplitude

3.A wave transfers

• amplitude

• wavelength

• frequency

• energy

The speed of a wave can be found by multiplying its frequency by the

• period

• wavelength.

• amplitude

• density of the medium that carries the wave

The vibrations along a transverse wave move in a direction

• along the wave in the same direction

• perpendicular to the wave

• parallel to the wave

• along the wave in the opposite direction

6.The vibrations along a longitudinal wave move in a direction

• along and parallel to the wave

• perpendicular to the wave

• below the wave

• above the wave

7.Interference is characteristic of

• only sound waves

• only light waves

• only water waves.

• all waves

1.The sound waves that humans cannot hear are those with frequencies

• from 20 to 20,000 Hz

• below 20 Hz

• above 20,000 Hz

• both B and C

2.Sound travels in air by a series of

• compressions.

• rarefactions

• both compressions and rarefactions

• pitches

3.Sound travels faster in

• a vacuum compared to liquids

• gases compared to liquids

• gases compared to solids

• solids compared to gases