Sound (Revision) 1

What determines the loudness or softness of a sound?

• Frequency

• volume

• Pitch

What makes a sound louder?

• Bigger vibrations

• Smaller vibrations

• slower vibrations

What is the unit for measuring sound?

• Hertz (Hz)

• Decibels (dB)

• Meters

What sound level can damage your ears?

• Less than 50 dB

• More than 85 dB

• Exactly 60 dB

Which device is used to measure the volume of sounds?

• Thermometer

• Sound level meter

• Microphone

What is an example of a sound insulator?

• Steel

• Iron

• Wool

Which is a way to muffle sound?

• Increase vibrations

• Wear ear defenders

• Stand closer to the sound source

What is the pitch of a sound?

• The loudness of the sound

• The speed of the sound

• How high or low the sound is

What determines the pitch of a sound?

• Frequency

• Volume

• Decibels

Fast vibrations create sounds that are:

• Low-pitched

• High-pitched

• Loud