11-17 Science Sound

Last updated over 5 years ago

5 questions

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https://www.youtube.com/watch?v=AxNdr0Bcx20
Sound through a medium

https://www.youtube.com/watch?v=AxNdr0Bcx20   This is the link the the sound video.

What does propagation mean in this sentence?

be quiet

to transmit or spread

to be noisy

The molecules in gases are lighter.

The molecules in gases are bigger.

The molecules in gases are farther apart.

The sound traveled through a solid, not through air. Since the medium changed, the sound changed.

The sound traveled through a vacuum.

The sound traveled through water.

6000 m/s

1500 m/s

350 m/s

The molecules are very close together.

There are no molecules to vibrate. Sound needs a medium to travel through.

The medium is a solid.

What does propagation mean in this sentence?

be quiet

to transmit or spread

to be noisy

Why does sound travel slowest through gases?

The molecules in gases are lighter.

The molecules in gases are bigger.

The molecules in gases are farther apart.

Why did the sound change when your ear was on the desk?

The sound traveled through a solid, not through air. Since the medium changed, the sound changed.

The sound traveled through a vacuum.

The sound traveled through water.

Based on this chart, at what speed will sound travel through air?

6000 m/s

1500 m/s

350 m/s

Why doesn't sound travel through a vacuum?

The molecules are very close together.

There are no molecules to vibrate. Sound needs a medium to travel through.

The medium is a solid.