Sound

Sound is a form of __________ energy.

• radient

• mechanical

• thermal

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Sound energy is produced and transmitted by __________ matter

• vibrating

• colorful

• musical

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

For you to hear sound, what is the correct order of the three events that must take place?
Indicate the order by writing “first”, “second”, or “third” next to the sentences below.
_____ Air particles vibrate as sound moves through the air.
___ Your eardrum vibrates when the sound wave reaches it.
____ An object vibrates to make a sound

• 1st, 2nd, 3rd

• 3rd, 1st, 2nd

• 2nd, 3rd, 1st

• 2nd, 1st, 3rd

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

A teacher placed a cell phone in a special glass container called a “bell jar”, as shown in the picture below. Then, she removed all air particles out of the jar, using a pump. Complete the sentence below to explain what would happen if someone calls this phone.

The phone will ____________________ because ________________________

• not make sound

  there are no air particles

• ring at a higher pitch

  air particles have more energy

• ring at a lower pitch

  there are no air particles to

  silence it

• ring at a regular pitch

  there are more air particles

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Sound travels in compression waves. In the model, sound is traveling across a room from the speaker to someone’s ear. What is represented by the blue particles in this model?

• sound particles

• 
  air particles

• 
  radiant energy

• electrical energy

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Which of the following are true statements about this model? Select ALL correct answers.

• The size of the air particles is too small.

• The model does not show the speed of the air particles.

• The model does not show the direction in which the air particles move.

• The air particles do not have space between them.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

In the model, what is traveling from the speaker through the air and to the ear?

• sound particles

• energy

• negatively charged particles

• music notes
  

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Marina’s brother turned his speakers up so loud that it shook the walls and made a picture
frame fall to the floor. Their mom asked, “How can a loud sound make something fall?”
What is the best explanation for Marina to give to her mom?

• Vibrations from the music transferred mechanical energy through the walls

• Loud music created a magnetic field that attracted the picture to the floor.

• The pitch of the music was too high to transmit energy

• The electrical energy from the speakers transformed into thermal energy.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS3-5

Tamara wondered how the temperature of air affects the speed of sound. In her research, she found the following data table.
What can Tamara conclude about how air temperature affects the speed of sound?

• Air temperature has no effect on the speed of sound.

• When air temperature increases, the speed of sound decreases.

• When air temperature increases, the speed of sound increases.

• When air temperature increases, the speed of sound remains the same.

Tags

NGSS.MS-PS1-4

What is the best explanation for why sound travels faster in air at 45 °C than at 0 °C?

• Warm air particles have more energy and can vibrate faster

• Warm air particles have less energy and vibrate more slowly

• Cold air particles have more energy and can vibrate faster

• Cold air particles have more energy and vibrate more slowly

Tags

NGSS.MS-PS1-4