8.3 Test Part 2 Review

How does changing the sound wave amplitude affect the sound? Choose one answer below.

• it changes the number of molecules in the air

• it changes the volume or loudness

• it changes the pitch

• it changes how long the sound lasts

How does changing the sound wave frequency affect the sound? Choose one answer below.

• it changes the number of molecules in the air

• it changes the volume or loudness

• it changes the pitch

• it changes how long the sound lasts

What are the two types of controls used by the sound engineer to affect the volume and pitch of a sound waves? Choose one answer below.

• Amplitude and Frequency

• Speed and Duration

• Loudness and Tone

When the object's molecules vibrate because energy from the sound wave is _________. Choose one answer below.

• created

• absorbed

• transmitted

• reflected

According to Figure 5, if the sound wave frequency is doubled, the energy is: __________. Choose one answer below.

• decreased 4 times (quartered)

• decreased 2 times (halved)

• increased 2 times (doubled)

• increased 4 times (quadrupled)

According to Figure 6, if the sound wave amplitude is doubled, the energy is: __________. Choose one answer below.

• decreased 4 times (quartered)

• decreased 2 times (halved)

• increased 2 times (doubled)

• increased 4 times (quadrupled)

In Figure 6, what is the relationship between the amplitude of a sound wave and its energy?

• Doubling the amplitude halves the energy

• Doubling the amplitude doubles the energy

• Doubling the amplitude quadruples the energy

Which sound effect will cause the most significant increase in the shaking of a music venue's windows? Choose one answer below.

• increasing amplitude

• increasing frequency

Decreasing the amplitude of a sound will cause the shaking of the music venue to:

• decrease

• stay the same

• increase slightly

• increase significantly

The frequency of a sound is related to its:

• loudness

• pitch

• duration

• speed