Ch. 15 Waves

Water waves...

• are not mechanical waves.
• transport water but not energy.
• transport energy but not water.
• transport energy and water.

Our eyes can detect light only within a range of _____ called visible light.

• periods
• frequencies
• speeds
• mediums

Sound waves from a radio generally travel in which medium?

• air
• light
• water
• earth

Light waves...

• cannot travel through liquids.
• are electromagnetic waves.
• cannot travel through solids.
• require a medium.

A person is standing still and listening to a siren sounding an alarm. The frequency of the sound is 500 Hz. The person begins running toward the sound at a rate of 20 m/s. The frequency of the sound the person hears will

• decrease
• remain the same
• increase
• change by 20 Hz.

The _____ is the distance between two crests of a wave.

• wavelength
• frequency
• amplitude
• period

The speed of a sound wave...

• depends on amplitude
• depends on the medium
• depends on wavelength
• none of the above

Sound waves are...

• circular waves
• longitudinal waves
• polarized waves
• transverse waves

A wave x meters long has a speed of y meters per second. The frequency of the wave is

• y + x.
• x/y.
• y/x.
• yx.

The wavelength of the wave in the diagram above is...

• 6.0 m
• 1.5 m
• .75 m
• 3 m