Year 7: Sound

How is sound produced?

• By the vibration of particles
• By the transfer of particles 

Tags

NGSS.MS-PS4-1

What is vibration?

• the back and forth movement of matter

• how loud a sound is

• how high or low a sound is

• the loudness or softness of a sound

Tags

NGSS.MS-PS4-1

__________ means to move back and forth quickly.

• Pitch
• Amplitude
• Vibration
• Echo

Speed of sound waves travel depends on the

• distance between the vibration source and the receiver.

• type of material through which the sound travels.

• size of the object making the sound.

• type of device making the sound.

Tags

NGSS.MS-PS4-2

In which does sound travel fastest?

• Solids

• Liquids

• Gases

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Sound waves travel the SLOWEST through _____________.

• gases
• solids
• liquids

Sound is able to travel faster in solids than in air because the molecules in a solid are

• closer together than air molecules

• more easily moved than air molecules

• larger than air molecules

• moving faster than air molecules

Tags

NGSS.MS-PS1-4

A student placed an electric bell in a sealed jar and then removed the air from the jar using a vacuum. The expected result of this experiment would be:

• silence because vibrations cannot be transmitted to the jar through a vacuum.

• a lower pitched bell because sound absorbed by glass

• an increase in amplitude because sound travels better in glass

• an increase in amplitude because sound travels better in glass

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Where is a place a person would hear no sound?

• in a cave
• in a forest
• in space
• in water

You can't hear sounds in outer space because there is no

• matter

• light

• heat

• energy

Tags

NGSS.MS-PS4-1