Physical Science: Mechanical Waves & the medium - PS4.2

Which medium will transmit sound the fastest?

• ocean water
• solid iron
• perfumed air
• a sponge

Tags

NGSS.MS-PS4-2

What state of matter allows sound to travel the slowest?

• Solid
• Liquid 
• Gas
• Doesn't Matter

Tags

NGSS.MS-PS4-1

Sound is able to travel faster in solids than in air because the molecules in a solid are

• closer together than air molecules
• more easily moved than air molecules
• moving faster than air molecules moving faster than air molecules
• larger than air molecules

Tags

NGSS.MS-PS4-2

A mechanical wave cannot travel through...

• a vacuum(empty space).
• water.
• air. 
• glass.

Tags

NGSS.MS-PS4-2

What is a medium?

• something between a small and a large?
• the substance through which a wave can travel
• a pattern of vibration that simulates when a wave is standing still
• the distance from any point on a wave to an identical point on the next wave

Tags

NGSS.MS-PS4-2

The illustration shows a light ray striking an object.
In the illustration, the light ray striking the object is-

• absorbed
• stopped
• reflected
• refracted

This shows the phenomenon known as....

• reflection
• refraction
• mirrors
• focal point

Why does the lower part of the child appear so much different in size from the upper part?

• The light rays that travel through water and then into air are refracted.
• The light rays that travel through water and then into air are enlarged.
• The light rays that travel through air and then into water are reflected.
• The light rays that travel through air and then into water are reduced.

Which of the figures represents reflection?

• A
• B
• C
• D

Which of the following represents refraction?

• A
• B
• C
• D