11-17 Science Sound

Poslední aktualizace over 5 years ago

5 Dotazy

Poznámka od autora:

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.

2.PS4.A

Knihovna

11-17 Science Sound

Poslední aktualizace over 5 years ago

5 Dotazy

Poznámka od autora:

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.

Otázka 1

What does propagation mean in this sentence?

be quiet

to transmit or spread

to be noisy

2.PS4.A

Otázka 2

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.

2.PS4.A

Otázka 3

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.

2.PS4.A

Otázka 4

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

6000 m/s

1500 m/s

350 m/s

2.PS4.A

Otázka 5

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.

2.PS4.A

Otázka 1

What does propagation mean in this sentence?

be quiet

to transmit or spread

to be noisy

Otázka 2

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.

Otázka 3

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.

Otázka 4

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

6000 m/s

1500 m/s

350 m/s

Otázka 5

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.