Which of them represents a soft sound?

• Low amplitude because the molecules are less compressed

• Low amplitude because the molecules are more compressed

• High amplitude because the molecules are less compressed

• High amplitude because the molecules are more compressed

Which of the following is true regarding the sound intensity and loudness for a sound wave with tight, dense compressions?

• Low Low

• Low High

• High High

• High Low

For a longitudinal wave, how close together the particles of the medium are in the compressions determines which property of the wave?

• Amplitude

• Frequency

• Wave length

• Wave speed

Which is the amount of energy that passes through a certain area in a specific amount of time?

• Amplitude

• Sound intensity

• Loudness

• Decibel

Loudness depends on ______.

• frequency

• speed

• pitch

• sound intensity

What do decibels measure?

• Frequency

• Sound intensity

• Pitch

• Amplitude

What is the lowest level in which sustained sounds can cause permanent hearing loss?

• 33 dB

• 50 dB

• 75 dB

• 90 dB

The number of times a vibration occurs each second is the ________.

• amplitude

• frequency

• pitch

• loudness

Which of the following is a unit of frequency?

• Meters (m)

• Hertz (Hz)

• Decibels (dB)

• Watts/squared meter(W/m2)

Which of the following quantities does pitch and loudness of a sound depend upon?

• Amplitude Frequency

• Amplitude Amplitude

• Frequency Amplitude

• Frequency Frequency