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Homework 20: Reflection, Refraction, Diffraction

Authored by Christina Bagnasco

Physics

8th Grade

NGSS covered

Used 1+ times

Homework 20: Reflection, Refraction, Diffraction
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20 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

A beam of light bends when it passes from air into water, and then bends even more when it passes from water into glass. What can you conclude from this fact?

Air is denser than glass.

Water is denser than glass.

Glass is denser than water.

Air is denser than water.

Tags

NGSS.MS-PS4-2

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Light refracts when:

It changes speed

It changes from a particle to a wave

Its density changes

It encounters a solid object

Tags

NGSS.MS-PS4-2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Why does white light from the sun form a colorful rainbow when it passes through water droplets in the atmosphere?

The droplets of water in the air have different densities

Different-sized water droplets refract white light at different angles

The colors that make up white light refract at different angles

White light diffracts when it encounters water

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What is the main difference between refraction and diffraction?

Refraction is a phenomenon that affects light; diffraction is a phenomenon that affects sound.

Refraction involves the bending of light; diffraction involves the bending and spreading of light, usually around an obstacle.

Refraction usually happens in the atmosphere; diffraction usually happens closer to the earth's surface.

Refraction involves changes to the density of light; diffraction involves changes to the speed of light.

Tags

NGSS.MS-PS4-2

NGSS.MS-PS4-1

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Definition: The spreading out of waves as they pass through an opening or around objects.

Reflection

Refraction

Diffraction

Resonance

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The diagram shows a series of wave fronts approaching an opening in a barrier. Point P is located on the opposite side of the barrier. The wave fronts reach point P as a result of

resonance

refraction

reflection

diffraction

Tags

NGSS.MS-PS4-2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which wave phenomenon makes it possible for a player to hear sound from a referee's whistle in an open field even when standing behind the referee?

diffraction

Doppler effect

reflection

refraction

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