Producing Sound

A form of energy that is produced when an object vibrates.

• sound

• amplitude

• frequency

• wavelength

Why is sound able to travel faster through a solid than a gas?

• Gas molecules are packed tightly.

• Sound does not travel faster through a solid than a gas.

• Solid molecules are packed tightly.

• Gas molecules move slowly.

When you speak into a landline phone, your voice travels in small __________.

• heat waves

• light waves

• sound waves

• none of the above

When you speak into a cell phone a microphone turns your voice into ___________ signals.

• electrical

• sound

• heat

• light

The speaker has a part called a ___________ that vibrates and causes the glitter to move.

• echolocation

• diaphragm

• equilibrium

• frequency

The volume __________ when we hit the noisy musical instruments with more energy.

• increased

• decreased

• contracted

• compressed

Answer explanation

More energy caused a louder sound, and less energy caused a softer sound. One possibility for why energy causes this effect is that the amount of energy could be related to the amount of vibration.

When the instruments are made of different materials and sizes, these differences likely caused differences in the sound of the notes made by the instruments.

• True

• False

• I don't know.

• I am not sure.

Making an instrument smaller causes its pitch to be lower.

Making an instrument larger causes its pitch to be higher

• True

• False

• I don't know.

• I am not sure.

What are longitudinal waves that can only travel through matter?

• heat waves

• light waves

• ocean waves

• sound waves

A disturbance that transfers energy from one place to another without transferring energy

• sound

• wave

• trough

• crest