Understanding Sound: Intensity and Pitch

What are decibels (dB) used to measure?

• The distance of a sound

• The color of a sound

• The intensity of a sound

• The speed of a sound

What is another name for a high-pitched sound?

• A deep sound

• A quiet sound

• A shrill sound

• A low sound

What determines the pitch of a sound?

• Its loudness

• Its frequency

• Its color

• Its temperature

What is a sound level meter used for?

• Measuring the temperature of sound.

• Measuring the color of sound.

• Measuring sound levels.

• Measuring the speed of sound.

What happens to the vibrations when a sound is louder?

• They become smaller.

• They become bigger.

• They stop.

• They change color.

How are loudness and pitch different?

• Loudness helps tell loud from faint sounds, while pitch helps tell shrill from flat sounds.

• Loudness depends on how fast something vibrates, while pitch depends on how much energy is in the sound.

• Loudness is about how high or low a sound is, while pitch is about how strong a sound is.

• Loudness is always the same, but pitch can change.

What does the loudness of a sound depend on?

• The distance the sound travels

• The height of the sound wave

• How fast the sound wave moves

• The type of sound

What is the unit used to measure loudness?

• Decibel

• Pascal

• Newton

• Weber

When is a sound considered noise?

• When it is quieter than 50 decibels

• When it is louder than 80 decibels

• When it is quieter than 10 decibels

• When it is louder than 50 decibels

Which animal makes a higher-pitched sound?

• A bird

• A lion

• Both make the same pitch

• Neither makes sound