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Light Study Guide

Total questions: 52

Worksheet time: 40mins

Name
Class
Date
1.

When light bounces off an object

a)

absorbs

b)

refracts

c)

reflects

2.

when light bends as it travels from one medium to another

a)

Absorbs

b)

Echos

c)

Reflects

d)

Refracts

3.

When light does not reflect or refracts it is taken in by an object

a)

Absorbs

b)

Reflect

c)

Refract

d)

opinion

4.

a form of matter that may or may not allow light to pass through it

a)

small

b)

medium

c)

soild

d)

gas

5.

a medium that allows ALL light to pass through

a)

transparent

b)

translucent

c)

opaque

d)

liquid

6.

a medium that allows SOME light to pass through

a)

transparent

b)

translucent

c)

opaque

d)

gas

7.

a medium that allows NO light to pass through

a)

transparent

b)

translucent

c)

opaque

d)

solid

8.

Refraction occurs best with

a)

lenses and water

b)

lenses

c)

water

d)

lenses and gas

9.

Reflection occurs best on:

a)

rough, bumpy surfaces

b)

flat, smooth surfaces

c)

opaque mediums

d)

wooden objects

10.

Absorption of light occurs best with:

a)

mirrors

b)

light surfaces

c)

medium surfaces

d)

dark surfaces

11.

What is NOT one of the 3 main types of mediums?

a)

Solid

b)

Liquid

c)

plastic

d)

Gas

12.

When light changes speed, its path is changed so that light rays are bent as they pass through. This is called:

a)

reflection

b)

refraction

c)

mirroring

d)

absorption

13.

Light bends as it passes through water

a)

True

b)

False

14.
What three things may happen to light that strikes an object? 
a)
The light may be reflected, transmitted or absorbed.
b)
The light may be reflected and refracted.
c)
The light may be absorbed and transmitted.
15.
What are the primary colors of the pigment?
a)
cyan, yellow and magenta
b)
Red, green and blue
c)
black and white
16.
An actorś red shirt and blue pants both appear black. What color is the stage light shining on the actor?
a)
Blue 
b)
Red
c)
Magenta
d)
Green
17.
The two kinds of reflection are 
a)
transparent and translucent
b)
opaque and translucent
c)
regular and diffuse
18.
______ is a copy of the object formed by reflected or refracted rays of light
a)
reflection
b)
refraction
c)
object
d)
image
19.
A plane mirror produces a/an 
a)
a small, real image
b)
a large, real image
c)
 a small, virtual image
d)
a same sized, virtual image
20.
_______ is an imaginary line that divides a mirror into half.
a)
focal point
b)
equator
c)
optical axis
d)
incident angle
21.
The point at which rays parallel to the optical axis is called the 
a)
reflection point
b)
focal point
c)
refraction point
22.
_______ mirrors can form either a virtual or a real image
a)
concave mirrors
b)
convex mirrors
c)
plane mirrors
23.
What is a prism?
a)
a transparent object that separates white light
b)
an opaque object that appears black
c)
a translucent object
24.
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
25.
If you are wearing a yellow shirt, what is true of the light that strikes it?
a)
Yellow is absorbed; everything else is reflected
b)
Yellow is reflected; everything else is absorbed
c)
All colors are reflected
d)
All colors are absorbed
26.
Which is transparent?
a)
a wooden fence
b)
clean water
c)
aluminum foil
d)
a purple balloon
27.
What causes the pencil to look broken when placed in water?
a)
Refraction
b)
Deflect
c)
Reflection
d)
Opaque
28.
Light travels...
a)
A. in ovals
b)
B. in circles
c)
C. in squares
d)
D. in straight lines
29.

This leaf will

a)

Reflect green light

b)

Absorb green light

c)

Reflect red light

d)

Reflect no light

30.

Caleb is sitting near the window on a sunny day. When he closes the curtain, the room becomes darker. What property of the curtain allows it to make the room darker?

a)

The curtain absorbs light.

b)

The curtain is brightly colored.

c)

The curtain folds easily.

d)

The curtain is rectangular shape.

31.

Lenses always________light.

a)

reflect

b)

refract

c)

transmit

d)

absorb

32.
Both reflecting and refracting telescopes are designed to
a)
break visible light into colors of the spectrum.
b)
separate visible light from ultraviolet and radio waves.
c)
gather and focus visible light.
d)
work better with short-wavelength radiation.
33.

When a laser is focused on an object, the place the laser hits gets very _____.

a)

hot

b)

cold

34.

Some lasers can _____ hard objects.

a)

burn

b)

cut

c)

travel

35.

Laser light can _____ away diseased body tissue.

a)

burn

b)

cut

c)

travel

36.

The waves of laser light all travel in _____.

a)

the same direction

b)

different directions

37.
Device that produces a concentrated beam of light
a)
Laser
b)
Lens
c)
Mirror
d)
Solar
38.
Increase in size, volume or significance
a)
Mirror
b)
Lens
c)
Laser
d)
Magnify
39.

If you were to accidentally scratch the outermost part of your eye, which part would you damage?

a)

The cornea

b)

The lens

c)

The retina

d)

The pupil

40.

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.

41.

Order the following: A) The optic nerve transmits signals; B) An image is projected onto the retina; C) Rods and cones transform an image into electrical impulses

a)

B, A, C

b)

C, A, B

c)

A, C, B

d)

B, C, A

42.

Which part of your eye acts like a sensor and sends an electrical sign to your brain through the optic nerve?

a)

iris

b)

cornea

c)

retina

d)

lens

43.

Which part of your eye is the opening through which light enters the eye?

a)

iris

b)

retina

c)

pupil

d)

optic nerve

44.

What part of the eye is a muscle that adjusts the amount of light that enters the eye? It is also the colorful part of the eye.

a)

daffodil

b)

iris

c)

lily

d)

rose

45.

What is the name of the cells in the retina that are light sensitive and help us see color?

a)

cones

b)

rods

c)

optic nerve

d)

pupil

46.

What is the name of the bundle of nerves that send signals from the retina to the brain?

a)

auditory canal

b)

basal membrane

c)

optic nerve

d)

this is not the answer

47.

What is the brain's role in seeing?

a)

it helps us to focus light when we are in a dim room.

b)

it helps us to focus light when we are outside in the bright sunlight.

c)

it doesn't play any role in seeing.

d)

it decodes signals sent from the retina so we can see a right-side up image.

48.
In dim light, the pupil _________.
a)
gets bigger
b)
gets smaller
49.
In bright light, the pupil _________.
a)
gets bigger
b)
gets smaller
50.
Rods help you see _________.
a)
colors
b)
black and white
c)
tv images
d)
video games
51.
Cones help you see _________.
a)
colors
b)
black and white
c)
tv images
d)
video games
52.
Signals from the retina travel to the brain through the __________.
a)
spinal cord
b)
eye cord
c)
optic nerve
d)
last nerve

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