Sound Energy

Sound travels FASTEST through which of these materials?

• Air
• Empty space
• Metal
• Water

Tags

NGSS.MS-PS4-2

Measure of how high or low a sound is

• amplitude
• compression
• speed of sound
• pitch

Tags

NGSS.4-PS4-1

Which of the following best describes how a sound wave travels?

• a branch moving back and forth
• a car speeding up and down hills
• a baseball hit by a bat
• a marble dropped in a bowl of water

Tags

NGSS.4-PS4-1

NGSS.4-PS4-3

What causes an echo?

• sound waves bouncing off large, hard surfaces

• sound waves bouncing off carpet

• sound waves bouncing off trees and bushes

• you repeating yourself

Tags

NGSS.MS-PS4-2

Why is the school library covered with carpet?

• So everyone can make a lot of noise
• to help absorb sounds to keep it quiet
• because it looks good
• to help absorb sounds so it can stay noisy

Tags

NGSS.MS-PS4-2

In which  medium will sound travel fastest?

• air
• water
• glass
• salt water

Tags

NGSS.4-PS3-2

NGSS.4-PS4-1

Which of the following determines the pitch of a sound wave?

• frequency
• density
• mass
• reflection

Tags

NGSS.4-PS4-1

Sound is caused by....

• molecules
• vibrations
• people
• space

Tags

NGSS.4-PS3-2

NGSS.4-PS4-1

Why do we not hear sound in outer space?

• there is no one out there to hear it.
• it is so cold
• it is a vacuum or empty space so there is not a medium for sound to travel
• there are too many stars that are exploding

Yeli was at Busch Gardens.  She heard an a girl scream on one of the rides.  What did the pitch of her voice sound like and why? 

• The pitch was high because her vocal chords vibrated quickly
• The pitch was low because her vocal chords vibrated slowly. 
• The pitch was high because her vocal chords vibrated slowly. 
• The pitch was low because her vocal chords vibrated slowly. 

Tags

NGSS.4-PS4-1