Sound Quiz Review

To produce sound, an object must be ____.

• vibrating

• moving towards the listener

• heated

• in a gas

___ is the human perception of the energy a wave carries.

• Loudness

• Pitch

• Wavelength

• Amplitude

Hearing damage begins to occur at sound levels of about ____ decibels.

• 25

• 50

• 85

• 110

____ is made of sounds that are irregular and disorganized.

• Doppler Effect

• Pitch

• Music

• Noise

Sound travels fastest in a ____

• Quiet Classroom

• solid

• liquid

• gas

When you speak, your words are transferred to a friend ___.

• by a phone

• by transverse waves

• by molecules colliding

• by electromagnetic waves

If you pass a building with a siren sounding, as you move away from the building the sirens will sound ___.

• higher

• lower

• the same

• obnoxious

A combination of sounds with different pitches and a specific pattern is _____.

• constructive interference

• white noise

• music

• beats.

Reverberation in concert halls is caused by

• diffraction

• refraction

• diffusion

• reflection

Sound is a disturbance that travels through a medium as a

• longitudinal wave

• surface wave

• standing wave

• transverse wave