"Making and changing sound" Grade 3

Data logger is used to check ...

• pitch

• temperature

• volume

• frequency

Which sound describes low pitch?

• right side of the piano

• whistle

• cat's meowing

• bass drum

Through which state of matter does sound travel fastest?

• solid

• liquid

• gas

• plasma

Which example is not a source of sound?

• vacuum cleaner

• animals

• hair dryer

• sofa

Strength of vibration changes the ...

• pitch of a sound

• volume of a sound

• frequency of a sound

• rhythm in music

Which equipment is described in the picture?

• Microphone

• Microscope

• Sound meter

• Thermometer

Which statement is false?

• Sound is the energy we can see but not hear

• either living or non-living things can be sources of sound

• Sound is the energy we can hear but not see

• if sound vibrates slowly, it makes lower pitch

Which of the examples below is not a low-pitched sound?

• guitar

• animal roar

• thunder

• whistle

What is the unit of frequency?

• hertz

• celsius

• desibel

• newton

Kitten purring is a ...

• low pitched sound

• high pitched sound