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Light + Color Review

Total questions: 41

Worksheet time: 26mins

Name
Class
Date
1.

When light waves hit a new medium, which of the following do they NOT do?

a)

Refract

b)

Reflect

c)

Absorb

d)

Rarefact

2.

Which of the following is NOT a primary color of light?

a)

Red

b)

Yellow

c)

Green

d)

Blue

3.
Which explains why the fork looks different under water?
a)
light can't pass through the glass
b)
the wavelength of light lengthens
c)
the amount of light increases when going through water
d)
light is refracted at an angle
4.
Why do we see objects as white?
a)
They absorb all light
b)
They reflect all light
c)
They absorb some light and reflect some light
5.
Another name for light bending is ....
a)
Reflaction
b)
Absorbing
c)
Refraction
d)
mirror
6.

The Law of Reflection:

The angle of incidence is _________ the angle of reflection

a)

bigger than

b)

the same as

c)

smaller than

7.
The color you see is the color that is ___.
a)
reflected
b)
absorbed
8.
Which term means to bounce off the surface of something?
a)
Refract
b)
Absorb
c)
Reflect
d)
prism
9.
The bending of waves as they pass from one substance into another.
a)
Reaction
b)
Reflection
c)
Refraction
d)
Repost
10.
Transfer of energy when a wave disappears into a surface
a)
Transparent
b)
Refraction
c)
Reflection
d)
Absorption
11.
If light strikes a mirror at a 50⁰ angle, what angle will it come off of the mirror?
a)
50⁰
b)
70⁰
c)
45⁰
d)
30⁰
12.
Which color absorbs all light?
a)
White
b)
Black
c)
Orange
d)
Green
13.
Which color reflects all light?
a)
White
b)
Black
c)
Orange 
d)
Green
14.
____________________ is the hole through which light enters the eye.
a)
Cornea
b)
Iris
c)
Retina
d)
Pupil
15.
________________________ gives your eye its color/ Example: Brown, hazel, green, blue
a)
Iris
b)
Retina
c)
Lens
d)
Cornea
16.
What does refract mean?
a)
To shrink
b)
To bend
c)
To widen
d)
To enlarge
17.
What happens to blue light when it hits a shirt that appears blue?
a)
The light is reflected.
b)
The light is absorbed.
c)
The light is refracted.
d)
The light is blocked.
18.
What do all waves have in common?
a)
nothing
b)
they carry energy
c)
they absorb light
d)
you can see them
19.

In the EM spectrum, ________ is shorter on the right than on the left.

a)

Frequency

b)

Hertz

c)

Amplitude

d)

Wavelength

20.

Cancer can be treated with_______________waves.

a)

Penicillin

b)

Radio

c)

Infrared

d)

Gamma

21.

______waves can help sterilize medical equipment by killing bacteria.

a)

Infrared

b)

Visible

c)

Gamma

d)

Ultraviolet

22.

Infrared waves are used in__________________.

a)

Bath tubs

b)

Microwaves

c)

Remote Controls

d)

Tanning

23.

The acronym (letters) used to remember visible light is____________

a)

KTPERRY

b)

ROYGBIV

c)

DOGPOUND

d)

ROMERO

24.

_____________________light is the only type of EM wave detected by the human eye.

a)

Red

b)

Gamma

c)

Microwave

d)

Visible

25.

Wavelengths on the right side of the EM spectrum are ______________.

a)

short

b)

long

c)

average

26.

The shortest wavelength in visible light is______.

a)

violet

b)

red

c)

blue

d)

yellow

27.

This type of EM wave can cause skin cancer.

a)

microwaves

b)

ultraviolet ray

c)

radio

d)

infrared

28.

This wave has the second highest frequency on the spectrum.

a)

microwaves

b)

visible light

c)

x-rays

d)

gamma ray

29.

_______ carry the greatest amount of energy.

a)

x-rays

b)

gamma rays

c)

infrared rays

d)

visible light

30.

All electromagnetic waves have _________ wavelengths and ________ frequencies.

a)

different, similar

b)

different, different

c)

similar, similar

d)

similar, different

31.

________ is an EM wave that has the LEAST energy.

a)

radio

b)

gamma rays

c)

microwaves

d)

visible light

32.

A magenta shirt under cyan light will look...

a)

magenta

b)

red

c)

blue

d)

black

33.

A green shirt under red light will look...

a)

Red

b)

Green

c)

Black

d)

White

34.

What does "c" stand for?

a)

speed of light

b)

speed of sound

c)

slow down factor

d)

index of refraction

35.

The speed of light is 300 million meters per second.

a)

True

b)

False

36.

What letter do we use to represent the index of refraction?

a)

r

b)

i

c)

n

d)

N

37.

Light is traveling at a speed of 250 million meters per second in a material. What is this materials index of refraction?

n = c/v

a)

1

b)

1.2

c)

0.83

d)

2.5

38.

What variable never changes when a light wave enters a new medium?

a)

Amplitude

b)

Frequency

c)

Wavelength

d)

Velocity

39.

What colors of light combine to create yellow?

a)

Red + Green

b)

Red + Blue

c)

Blue + Green

40.

What colors of light combine to create magenta?

a)

Red + Green

b)

Red + Blue

c)

Green + Blue

41.

What colors of light combine to create cyan?

a)

Red + Green

b)

Red + Blue

c)

Green + Blue

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