Which of these provides the best explanation for why the pencil appears broken?

Light rays are bent by the water in the glass.

The pencil absorbs the light rays that hit it.

Water reflects light rays away from the pencil.

The surface of the water reflects the light rays.

What happens to light after it hits a mirror?

It goes through the mirror and bend.

It goes straight through the mirror.

Why is the spectrum of light seperated into its components of colour when white light is directed to a prism?

The different colours in the white light bend towards the normal line at different angles when entering prism

The different colours in the white light bend away from the normal line at different angles when entering prism

The different colours in the white light bend away from the normal at same speed to each other when entering prism

The different colours in the white light bend towards the normal at same speed to each other when entering prism

This is the example of dispersion of light

sky looks bright orange in the evening

Why is red light is at the top whileviolet at the bottom of the spectrum?

Red light has the highest speed so it is refracted the least.

Violet light has the medium speed so it is refracted the least.

Violet light has the highest speed so it is refracted the least

Red light has the slowest speed so it is refracted the least

When a light ray strikes a smooth, flat surface, what is the relationship between the angle of incidence and the angle of reflection?

The angle of incidence is twice that of the angle of reflection.

The angle of reflection is twice that of the angle of incidence.

They combine to add up to 180 o .

What makes it possible to see an object when looking through a periscope?

It contains mirrors that reflect the object.

It magnifies small objects so they can be seen.

It bends the light rays passing through it.

It separates the light into different colors.

7th_light_quizziz

Quiz

•

Science, Physics

•

7th Grade

•

Practice Problem

•

Medium

Elisa Calle

Used 4+ times

FREE Resource

34 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Light is a form of energy.

True

False

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Light travels

around corners

in a straight line (transverse waves)

in loops, like a slinky (longitudinal waves)

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Light bounces when it strikes a smooth and/or lustrous surface

reflected

absorbed

refracted

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Light bends when it is

reflected

absorbed

refracted

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Can be used to identify heat signatures of people lost in the wilderness

Infrared

Radio

Microwaves

Ultraviolet (UV)

X-Rays

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Can be used to send communications, videos, and music short range (local areas) or long range (to space)

Infrared

Radio

Microwaves

Ultraviolet (UV)

X-Rays

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Used to cook with

Infrared

Radio

Microwaves

Ultraviolet (UV)

X-Rays

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7th_light_quizziz

34 questions

Light is a form of energy.

Light travels

Light bounces when it strikes a smooth and/or lustrous surface

Light bends when it is

Can be used to identify heat signatures of people lost in the wilderness

Can be used to send communications, videos, and music short range (local areas) or long range (to space)

Used to cook with

Sunlight, tanning beds, plant lights

Used to "see" inside the body, for instance to tell if a bone is broken

Which of these types of light have the highest energy?

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