Frequency and Sound Waves

How does sound travel to the human ear?

• A: Through liquid

• B: Through a vacuum

• C: Through air

• D: Through a tube

What is the definition of FREQUENCY?

• A: the time it takes for a sound to stop.

• B: how far a sound wave travels

• C: the shape of the sound wave

• D: the number of sound waves that pass a point in one second

The HIGHER the Frequency the LOWER the sound.

• True

• False

Frequency is measured in?

• Hertz (Hz)

• cm

• minutes per second (m/s)

• kg

What is the definition of AMPLITUDE?

• A: the number of sound waves in a second.

• B: the height of a sound wave, which tells us how loud or soft a sound is.

• C: the type of sound, like a voice or a drum

• D: the speed at which sound travels through the air.

The HIGHER the amplitude the LOUDER the sound

• True

• False

What is a sound WAVEFORM?

• A: a measure of how loud a sound is.

• B: a drawing of a musical note.

• C: a picture of a sound that shows how it gets louder and softer over time.

• D: the pitch of a sound determined by its frequency

What kind of waveform is this?

• Triangle wave

• Sawtooth wave

• Sine wave

• Square wave

What is the hearing frequency range that a human can hear?

• 50Hz - 50,000Hz

• 60Hz - 60,000Hz

• 40Hz - 60,000Hz

• 20Hz - 20,000Hz