Sound Energy

Sound is caused by

• force

• vibrations

• instruments

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Which of the following is the best model to describe how a sound wave travels?

• a tree branch moving in the wind

• a car speeding down a hill

• a baseball hit by a bat

• a marble dropped in a bowl of water

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Why does cupping your hands around your mouth when you shout make the sound travel further?

• The sound spreads out.

• Your voice gets louder.

• Your voice becomes muffled.

• The sound doesn't spread as much.

Tags

NGSS.MS-PS4-1

What would happen if you tighten the strings on a guitar?

• it would make a low pitch sound

• it would make a high pitch sound

• it would produce low volume sound

Tags

NGSS.MS-PS4-1

What causes an echo?

• sound waves bouncing off large, hard surfaces

• sound waves bouncing off soft surfaces like carpet

• sound waves bouncing off small objects like tables and chairs

• you repeating yourself

Tags

NGSS.MS-PS4-2

Research ships use sound waves to find objects underwater. What happens to the sound waves when they are emitted from the ship?

• They are absorbed by the water around the ship.

• They are reflected off objects they strike in the water.

• They are absorbed by the air above the ship.

• They are refracted as they strike the water.

Tags

NGSS.MS-PS4-2

Even though bats cannot see well, sonar allows them to fly in and out of tight spaces, even at night.  Sonar is a phenomenon of sound that relies on 

• refracted sound

• absorption of sound

• echoes 

• reflected light

Tags

NGSS.MS-PS4-2

What is an echo?

• a sound absorbed by materials around it

• a sound traveling to a listener far away

• a sound changing in frequency

• a sound that repeats due to reflection of sound waves

Tags

NGSS.MS-PS4-2

Fishermen use a depth finder to send ultrasonic waves into the water.  The time it takes for sound waves to return helps them determine where to fish.  WHich property of sound reveals the location?

• frequency

• intensity

• pitch

• reflection

Tags

NGSS.MS-PS4-2

Which word describes how LOUD a sound is?

• volume

• pitch

• frequency

• tone

Tags

NGSS.MS-PS4-1