Decibels

Sounds softer than 85dB will damage your ears

• True

• False

The units for measuring the loudness of sound are

• decibels

• audiles

• earibles

• volume

The LOUDNESS of sound is measured in

• dopplers

• hertz

• decibels

• amplitudes

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

What is the unit of the loudness of a sound?

• Hertz

• Decibel

• Frequency

• Pitch

If two sound waves have the same frequency but different amplitudes, how will they differ?

• They will have different pitches

• They will have different loudness

• They will have different speeds

• They will have different wavelengths

Tags

NGSS.MS-PS4-1

Which of the following best describes the relationship between amplitude and loudness?

• Higher amplitude means lower loudness.

• Amplitude and loudness are unrelated.

• Higher amplitude means higher loudness.

• Loudness decreases as amplitude increases, up to a certain point.

Tags

NGSS.MS-PS4-1

How does increasing the amplitude of a sound wave affect its loudness?

• Loudness decreases

• Loudness remains the same

• Loudness increases

• Loudness becomes inaudible

Tags

NGSS.MS-PS4-1

Which of the following properties of sound waves determines how loud or soft a sound is perceived?

• Frequency

• Amplitude

• Wavelength

• Speed

Tags

NGSS.MS-PS4-1

Who is the scientist that was named after 'decibel'?

• Galileo Galilei

• Alexander Graham Bell

• Albert Einstein

• Isaac Newton

According to the World Health Organization (WHO), what defines a dangerous sound?

• Over 85 decibels

• Below 35 decibels

• Below 40 decibels

• Over 80 decibels