WEEK 10 REVIEW

Which of the following are you likely to see if you closely observe a speaker?

• 1. The speaker’s cone vibrating

• 1. The speaker changing colors

• 1. The speaker growing in size

• 1. The speaker emitting light

Tags

NGSS.MS-PS4-1

How does the speaker make sound waves travel through the air?

• 1. By changing its color

• 1. By producing light

• 1. By vibrating and creating compressions and rarefactions in the air

• 1. By producing wind

How might you demonstrate that sound can make an object move?

• 1. Hold the object in your hand and hum

• 1. Place a small object near a loudspeaker and observe if it shakes

• 1. Shine a light on an object to see if it moves

• 1. Put the object in a freezer to see its reaction

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Which observation about the speaker is most useful for understanding the video of the truck and window?

• 1. The speaker is black

• 1. The speaker moves when making sound

• 1. The speaker has a brand logo

• 1. The speaker’s volume setting

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

What happens when a speaker produces sound?

• 1. The speaker creates particles of sound that travel to the ear.

• 1. The speaker releases special sonic particles that directly reach the ears.

• 1. The speaker heats up the air, making it move around the room.

• 1. The speaker cone moves rapidly, pushing air molecules to create sound waves.

Tags

NGSS.MS-PS4-2

How can the loudness of a sound be altered?

• 1. By changing the color of the object

• 1. By striking or playing the object with varying force

• 1. By keeping the object still

• 1. By freezing the object

What happens to a drum’s surface when it is struck?

• 1. It shrinks.

• 1. It becomes quiet.

• 1. It vibrates rapidly.

• 1. It melts.

Tags

NGSS.MS-PS4-1

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What happens to the air around a vibrating object?

• 1. It also begins to vibrate.

• 1. It disappears.

• 1. It changes color.

• 1. It turns into water.

Tags

NGSS.MS-PS4-1

Why is it useful to create a model to understand sound production?

• 1. Because models can change color

• 1. Because models can be frozen

• 1. Because models are fun to draw

• 1. Because models help show and explain concepts

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

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How do you know an object is vibrating when making sound?

• 1. You can see or feel it moving rapidly.

• 1. It becomes invisible.

• 1. It starts producing light.

• 1. It changes color.