Sound Unit

What is sound?

• a wave of vibration that spreads from its source

• the noise an object makes

• something you hear

Tags

NGSS.4-PS3-2

NGSS.4-PS4-1

The back and forth motion of an object is called.....

• Frequency

• Sound

• Vibration

• Pitch

_____ is how high or low a sound is.

The loudness of a sound

• pitch

• amplitude

• frequency

• echo

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

The number of vibrations per second is called....

• volume

• Amplitude

• Echo

• Frequency

Tags

NGSS.MS-PS4-1

Where do sounds come from?

• We just create them when we want to

• The vibration of an object

• Our mouths

• From noise machines

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

How are frequency and pitch related?

• They are not related

• When the frequency is higher the pitch is also higher

• When the frequency is higher the pitch is lower

Is it possible for sound to be loud for one person, but softer for another? Why or why not? Explain

Tags

NGSS.MS-PS4-1

What must happen for a sound to be heard?

• A source just has to create sound with no medium to carry it

• There must be a vibration from a source and medium to carry that vibration to a receiver to detect it

• You have to be REALLY loud

Tags

NGSS.MS-PS4-2

Is your eardrum like a real drum? True or false?

• True

• False