Sound Lesson

Which statement best explains how sound is produced by a stringed instrument?

• Gravity pulls on the string.

• The matter in the string expands as it is plucked.

• The vibration of the string causes the air around the instrument to vibrate.

• The instrument's sound travels faster than the other sounds in air.

Sounds are carried by waves through all matter (solids, liquids, and gases).

Which wave has the highest-pitched sound?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS4-1

As the frequency of a sound wave increases, __________.

• the pitch gets higher.

• the pitch gets lower.

• the sound gets softer.

• the sound gets louder.

When a school bell rings, parts of the bell will vibrate, ________.

• causing your eardrum to vibrate, and then a message is sent to your brain.

• your eardrum to vibrate, which causes the air around you to vibrate, which causes your eardrum to vibrate.

• causing the air around it to vibrate, and then a message is sent to your brain.

• causing the air around it to vibrate, which causes your eardrum to vibrate, and then a message is sent to your brain.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Mary is making a sound by vibrating a rubber band that is stretched between her fingers. If she moves her fingers closer together, the vibration of the rubber band slows down.

When the vibration slows down, what will happen to the pitch of the sound?

• it will get lower

• it will get higher

• it will not change

• it will get louder

The volume of a sound is measured in units called ________

• decibels

• liters

• sound waves

• inches per minute

The ______ of a sound depends on the medium through which it's moving.

• pitch

• vibration

• speed

• sound

Tags

NGSS.MS-PS4-2

When you measure the volume of sound what are you measuring

•  how high or low the sound is
  
  

• how loud or soft the sound is

• how long or short the sound is

• how little or big the sound is

What will happen if you pluck a guitar string with more force?

• The pitch will get higher.

• The pitch will get lower.

• The volume will get louder.

• The volume will get softer.

Tags

NGSS.MS-PS4-1

Does frequency determine pitch?

• Yes

• No