Light Test

Question 1

A purple neon sign emits light waves with which of the following wavelengths

Answer 1

Purple wavelengths

Question 2

An a calm day, you can see a reflection in a pond. On a windy day. You cannot, because the surface is __________ , resulting in ____________ reflection.

Answer 2

Rough, diffuse

Question 3

true or false
An apple looks red because it absorbs red light

Answer 3

False

Question 4

4.
In the diagram, 2 is a(n) _______ image.

Answer 4

Virtual

Question 5

5. Which statement about the image the person sees is false.

Answer 5

C. The image would appear the same in a convex mirror

Question 6

Light bends as it passes from air into glass at an angle due to……

Answer 6

B. Refraction

Question 7

What is the key difference between a convex mirror and a convex lens?

Answer 7

A convex mirror reflects light, while a convex lens allows light to pass through.

Question 8

What happens when the primary colors of pigment are mixed in equal amounts?

Answer 8

They create black.

Question 9

9. Match the letter of each lens are mirror shown with the correct description below.

Answer 9

A
D
B
C
E

Question 10

10.
A convex lens could also be called a____________ lens.

Answer 10

C. Converging

Question 11

What is the name of the line drawn perpendicular to the surface where a light, ray strikes?

Answer 11

C.
Normal

Question 12

In a room let only buy a red light, a green shirt would appear to be_________.

Answer 12

C. Black

Question 13

Blackout curtains are designed to keep light out of a space. These curtains are made using material that is __________.

Answer 13

13. Opaque

Question 14

Why does black paint appear black?

Answer 14

Because light reflects black and absorbs all colors except for black.

Question 15

The cells in your eye that help you see in dim conditions are called _________ cells.

Answer 15

16.
Rod

Question 16

Light reflects off paper, yet you cannot see a reflection in paper. Why not?

Answer 16

Because it only reflects the white back to your eyes. It isn’t like a mirror.

Question 17

The point where light raised converged to a point is called the _________ point.

Answer 17

18. Focal

Question 18

19. a) describe the path of light rays 2 and 3 as they would be reflected by the mirror.

Answer 18

They would be reflected out to a focal point that all the rays of light share.

Question 19

19. b) explain why Harley could start a campfire using a concave mirror on a sunny day.

Answer 19

Because all the light would be reflected to one focal point which would be hot enough to start a fire.