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Unit 8 Light Review

Total questions: 41

Worksheet time: 1hrs 22mins

Name
Class
Date
1.

Convert this number to standard notation: 7.1 x 104

(a)  

2.

Convert this number into scientific notation: 0.068

a)

6.9 x 106

b)

6.8 x 10-9

c)

6.8 x 10-2

d)

None of the above

3.
Change from standard form to scientific notation: 12,000,000
a)
12.0  x  107
b)
0.12  x  107
c)
1.2  x  106
d)
1.2  x  107
4.
Change from standard form to scientific notation:  0.000398
a)
39.8  x  10-5
b)
3.98  x  10-5
c)
3.98  x  10-4
d)
39.8  x  10-6
5.
Which type of waves are used in broadcasting?
a)
radio waves
b)
infrared rays
c)
x-rays
6.
Which of the following has frequencies higher than ultraviolet rays?
a)
visible light
b)
infrared rays
c)
x-rays
7.

Which of the following has the most energy?

a)

Red

b)

Blue

c)

Green

d)

Yellow

8.

Which of the following has the most energy?

a)

X-rays

b)

The color green

c)

Microwaves

d)

Infrared

9.

Which travels fastest in a vacuum?

a)

Red Light

b)

Xrays

c)

Gamma Rays

d)

All the same

10.
Put the visible light colors in order from longest wavelength to shortest wavelength
a)
Violet, Blue, Green, Orange, Yellow, Red
b)
Red, Yellow, Green, Orange, Violet, Blue
c)
Red, Orange, Yellow, Green, Blue, Violet
d)
Blue, Violet, Green, Yellow, Orange, Red
11.

How are rods different from cones?

a)

Rods are sensitive to light, while cones can detect color.

b)

Cones are sensitive to light, while rods can detect color.

c)

Cones send images to the brain, while rods do not.

d)

Rods send images to the brain, while cones do not.

12.

Additive colors are made of

a)

light

b)

pigment or paint

c)

nothing

13.

Subtractive colors are made of

a)

light

b)

pigment or paint

c)

nothing

14.

Mark the primary colors for additives.

a)

Cyan

b)

Red

c)

Green

d)

Blue

15.

Mark the primary colors for subtractives.

a)

Cyan

b)

Yellow

c)

Green

d)

Magenta

16.

Which primary color of light is ABSORBED by a magenta object?

a)

red

b)

blue

c)

green

d)

magenta

e)

cyan

17.

Which primary colors of light REFLECT off of a yellow object?

a)

red

b)

green

c)

yellow

d)

cyan

e)

magenta

18.

Which primary colors of pigment are used to color an object blue?

a)

cyan

b)

magenta

c)

yellow

19.

What color do you get when you shine green light on yellow pigment?

a)

red

b)

yellow

c)

green

d)

magenta

e)

cyan

20.

What color do you get when you shine red light on blue paper?

a)

red

b)

black

c)

green

d)

blue

e)

magenta

21.

What color do you get when you mix red, blue, and green light?

a)

white

b)

black

c)

yellow

d)

cyan

e)

magenta

22.

The speed of light is:

a)

300,000,000 m/s

b)

343 m/s

c)

3.00e10 m/s

d)

3,000,000 m/s

23.

Different colors of light correspond to different light:

a)

Frequencies

b)

Intensities

c)

Amplitudes

d)

Velocities

24.

What color(s) of light is absorbed by a piece of red glass?

a)

red

b)

cyan

c)

blue

d)

green

25.

Material that allows light to pass through allowing you to see "clearly" to the other side.

a)

opaque

b)

translucent

c)

transparent

26.

Wax paper or a foggy window is an example of what type of material?

a)

transparent

b)

translucent

c)

opaque

27.

Why does an apple look red?

a)

because it absorbs red light and reflects white light

b)

because it absorbs red light waves and reflects the others

c)

because it absorbs all colors of light

d)

because it reflects red light waves and absorbs the others

28.

Black absorbs all light.

a)

True

b)

False

29.
Light travels ___________.
a)
backwards
b)
in a straight line
c)
in curves
d)
at a right angle
30.

The ray of light that strikes a mirror

a)

Reflected Ray

b)

Incidence Ray

c)

Angle of Incidence

d)

Angle of Reflection

31.

The angle between the incident ray and the normal. (X on the diagram)

a)

Angle of X-Ray

b)

Angle of Reflection

c)

Angle of Incidence

d)

Angle of Normal

32.

An imaginary line that is drawn at a right angle (90 degrees) to a mirror (Green line)

a)

Reflection Ray

b)

Normal

c)

Incidence Ray

d)

Light Ray

33.

If the angle of incidence in the diagram is 80°, the angle of reflection will be:

a)

10°

b)

100°

c)

90°

d)

80°

34.
The bouncing off of light rays from the surface of an object such as a mirror or other shiny surface is called:
a)
mirror
b)
laser
c)
reflection
d)
refraction
35.
According to the Law of reflection, a light ray striking a mirror
a)
continues moving through the mirror in the same direction
b)
moves into the mirror at a slightly different angle
c)
bounces off the mirror toward the direction it came from
d)
bounces off the mirror at the same angle it hits.
36.
What is this called?
a)
refraction
b)
reflection
c)
reconstroction
d)
retraction
37.

Which lens represents the path light takes through a diverging lens?

a)
b)
c)
d)
38.

what is A on the diagram?

a)

center of curviture

b)

focal length

c)

reflected ray

d)

focal point

39.

Which figure represents the path light takes through a converging lens?

a)
b)
c)
d)
40.

Which diagram represents diffuse reflection?

a)

A

b)

B

c)

C

d)

D

41.

Which diagram represents specular reflection?

a)

A

b)

B

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