Waves and Sound Final Review

Which letter represents a crest?

• A
• B
• C
• D

Which letter represents a complete wavelength?

• A
• B
• C
• D

Why do we see lightning then hear thunder?

• The speed of sound is faster than the speed of light.
• The speed of light is faster than the speed of sound.
• The moisture in the air refracts sound more than light.
• The moisture in the air reflects light more than sound.

Frequency is defined as...

• Number of waves or cycles generated per second.
• The maximum displacement of a wave from its equilibrium position.
• The time interval between two consecutive waves.
• The distance between two identical positions on two consecutive waves.

A wave machine generated waves with a wavelength of 0.080 m at a constant wave speed of 17 m/s. Calculate the frequency of the waves.

• 212 Hz

• 1.36 Hz

• 0.00470 Hz

• 16.92 Hz

• 1.36

Which wave has the greatest amplitude?

• A
• B
• C
• D

How loud or soft a sound is, is related to the _____________ of the wave

• amplitude
• frequency
• wave length
• rest position

Which type of wave is pictured here?

• Longitudinal
• Transverse
• Light 
• Electromagnetic

 A wave has frequency of 50 Hz and a wavelength of 10 m. What is the speed of the wave?

• 500 m/s
• 50 m/s
• 5 m/s
• 0.5 m/s

Calculate the frequency if a wavelength is 0.11 m and a velocity of 165 m/s

• 38 Hz

• 239 Hz

• 1,500 Hz

• 2,190 Hz