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Light & Shadow Unit Test

Total questions: 44

Worksheet time: 32mins

Name
Class
Date
1.
What does the moon do?
a)
produces light
b)
reflects the suns light
c)
produces heat
2.
Light travels in..
a)
waves
b)
circles
c)
a straight line
3.
We can see things around us because of light reflecting off and into our eyes?
a)
True
b)
False
4.
Which will make the darkest shadow? Light shining on a...
a)
sheet of thin tissue paper
b)
glass window  
c)
wooden chopping board  
d)
none of the above
5.

What does reflection mean?

a)

Light bouncing off an object.

b)

Light is bending around an object.

c)

Light is moving through and object.

d)

This is no light.

6.

If you can see light through an object it is called...

a)

opaque

b)

plastic

c)

transparent

7.

The closer the object is to the light source, the bigger the size of shadow.

a)

True

b)

False

8.

Opaque objects produce _____________ shadows.

a)

no

b)

light

c)

dark

9.

Translucent objects cast a ___________ shadow.

a)

no

b)

light

c)

dark

10.

Transparent objects cast little or _________ shadows.

a)

no

b)

little

c)

dark

11.

Which images are opaque?

a)

A & C

b)

All the images

c)

E, & F

d)

A & E

12.
Opaque means...
a)
No light passes through it
b)
All light passes through it
c)
Some light passes through it
13.
Allows most light through
a)
eflection
b)
Refraction
c)
Translucent
d)
Transparent
14.

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

a)

transparent

b)

translucent

c)

opaque

15.
Light travels in a straight line
a)
True
b)
False
16.
Which of these is our MAIN (most important) source of light?
a)
Lightbulbs
b)
The Sun
c)
Fire
d)
All of them
17.
Which objects REFLECT more light?
a)
Shiny objects
b)
Dull objects (not shiny)
18.
Which material is opaque?
a)
Brick
b)
Water
c)
Tissue Paper
d)
Glass
19.
Which material is transparent?
a)
Clear glass
b)
Tissue paper
c)
Shoe
d)
Wax paper
20.
Which one is an example of light being reflected?
a)
Seeing yourself in a mirror
b)
Lighting a candle
21.

Why do we see objects as black?

a)

They absorb all light

b)

They reflect all light

c)

They reflect red and blue light.

d)

They reflect green and blue light.

22.
What happens when light hits a mirror?
a)
it makes a color
b)
it reflects
c)
it makes a rainbow
d)
it passes through
23.

Which tool can be used to separate white light into colors of the visible spectrum?

a)

prism

b)

wave

c)

lens

d)

mirror

24.
A _________ lens is thicker at the center than it is at the edges.
a)
concave
b)
convex
c)
mirror
d)
plane
25.
A lightbulb is an example of..
a)
natural light
b)
real light
c)
artificial light
26.
Shadow is short when sun is overhead at
a)
 noon
b)
midnight
c)
night
d)
sunset
27.

What causes a shadow to change during the day?

a)

The sun's position in the sky

b)

Where the moon is located during the day

c)

When the sun sets

28.
Which light source causes shadows in the outdoor environment? 
a)
The Sun
b)
The Lightbulb
c)
The House
d)
The School
29.
True or False: The shadows are longest in the early morning and late afternoon. 
a)
True
b)
False
30.

The star at the center of the solar system around which the Earth and other planets orbit.

a)

Sun

b)

Moon

c)

Jupiter

d)

Mars

31.

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 and the speed of light changes.

32.

_____ is a lens is used in microscopes to see images close up.

a)

prism

b)

convex lens

c)

concave lens

d)

mirror

33.

______ is a lens that is used to see things far away.

a)

mirror

b)

convex lens

c)

concave lens

d)

prism

34.
The color you see is the color that is ___.
a)
reflected
b)
absorbed
35.
Which material makes a dark shadow?
a)
Transparent
b)
Translucent
c)
Opaque
36.
The colors of the rainbow in order are...
a)
ROVERG
b)
VIBGYOR
c)
ROYGBIV
d)
ROYGVIB
37.

When you look at your reflection in a concave mirror it will appear________________.

a)

Right side up and larger

b)

Right side up and smaller

c)

Upside down and larger

d)

Upside down and smaller

38.

When blue light is shone on an object that is red, the object will appear ______________.

a)

Blue

b)

Green

c)

Black or grey

d)

Red

39.
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
40.
The color you see is the color that is ___.
a)
reflected
b)
absorbed
41.
Fill in the blank with the best answer: After light passes through a convex lens the light comes together at a __________. 
a)
Spot
b)
Focal point
c)
point
d)
Local Point
42.
Curve in
a)
Converse
b)
Convex
c)
Convection
d)
Concave
43.
Curve Out
a)
Converse
b)
Concave
c)
Convex
d)
Convection
44.

A shadow is created when...

a)

an object blocks the light

b)

an object is above the light

c)

no light is present

d)

an object allows light to pass through

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