a back and forth movement of matter

• medium

• frequency

• echo

• vibration

Tags

NGSS.MS-PS4-1

the loudness of a sound

• vibration

• pitch

• volume

• frequency

Tags

NGSS.MS-PS4-1

the highness or lowness of a sound

• volume

• amplitude

• echo

• pitch

the number of vibrations per second

• frequency

• amplitude

• medium

• pitch

sound that bounces off (reflects) off a surface

• medium

• echo

• vibration

• pitch

Tags

NGSS.MS-PS4-2

matter through which a wave travels through

• vibration

• frequency

• pitch

• medium

Tags

NGSS.MS-PS4-2

Special dog whistles make sounds that people cannot hear. Why can't people hear these sounds from these whistles?

• The frequency is too high.

• The sound is too loud.

• The volume is too soft.

• The frequency is too low.

What happens when you hear an echo?

• absorption of a sound wave

• reflection of a sound wave

• refraction of a sound wave

• radiation of a sound wave

Tags

NGSS.MS-PS4-2

A restaurant owner wants to have a quiet dining room. Which change would absorb the most sound and create the quietest dining room?

• painting the concrete walls and floor a light color

• removing the spongy ceiling tiles to show off the metal roof

• placing fabric tablecloths on the tables and fabric curtains on the windows

• replacing the fabric-covered chairs with wooden chairs

Tags

NGSS.MS-PS4-2

Through which medium does sound travel fastest?

• solid

• liquid

• gas

Tags

NGSS.MS-PS4-2