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WorksheetsPhysics Light
Total questions: 75
Worksheet time: 1hrs 14mins
Name
Class
Date
1.
Determine the wavelength of this wave?
a)
1m
b)
2m
c)
3m
d)
4m
2.
What is the shortest wavelength of visible light?
a)
10-12m
b)
710nm
c)
390nm
d)
10m
3.
If a wave's speed is 5m/s and it has a wavelength of 2.5m, what is it's frequency?
a)
12.5Hz
b)
2.5Hz
c)
7.5Hz
d)
2Hz
4.
What are the three primary colours of light?
a)
Red,Yellow,Blue
b)
Red,Green,Yellow
c)
Red,Green,Blue
d)
Yellow,Blue,Green
5.
Tina is wearing a red dress. She visits a nightclub where the light is cyan. What colour will her dress appear to be?
a)
Cyan
b)
Red
c)
Blue
d)
Black
6.
What does polarising do?
a)
Blocks light
b)
Causes light to travel in only one plane
c)
Reduces the amount of light
d)
Looks cool
7.
Which of these causes the colors in a rainbow to separate?
a)
sunlight passing through raindrops
b)
strong winds
c)
Earth's gravity
d)
different colors of light going at different speeds
8.
What are the two properties of light?
a)
color and mass
b)
brightness and mass
c)
color and brightness
d)
energy and volume
9.
Which of these is an example of visible light?
a)
X-rays
b)
rainbow
c)
microwaves
d)
radio waves
10.
What do you get if you combine all of the colors in visible light?
a)
bright light
b)
white light
c)
brilliant light
d)
neon light
11.
Which word gives a description of the brightness of light?
a)
dim
b)
hot
c)
close
d)
white
12.
What would be the best way to tell whether the candle or the light bulb gives off brighter light?
a)
Unplug the light bulb and then blow out the candle
b)
Turn on the lights in the room
c)
Put the candle and the light bulb at the same distance from you
d)
Move the light bulb and the candle to a sunny window
13.
What happens when light hits an object you can see?
a)
The light turns corners.
b)
The light curves around the object.
c)
The object reflects the light.
d)
The light and the object do not form a shadow.
14.
Why does a ruler with one end in the air and one end under water appear bent?
a)
Light moves through air faster than it moves through water.
b)
The light is reflected from the ruler moves in a curved path.
c)
Light moves through water at the same speed as it moves through air.
d)
Light in the air is brighter than light in the water.
15.
Through what kind of matter does light move fastest?
a)
liquids
b)
air
c)
matter that is lighter in color
d)
matter that is in larger objects
16.
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.
17.
Why does the reflection of the trees in the lake appear blurry?
a)
The light that hits the water is reflected in different directions.
b)
The light that hits the water is reflected at different speeds.
c)
The light is reflected from the uneven bottom of the lake.
d)
The light that is reflected from the trees is refracted by the lake.
18.
Which is true of a green grape?
a)
It absorbs green light.
b)
It absorbs white light.
c)
It reflects green light.
d)
It reflects white light.
19.
What is a property of a transparent object?
a)
Almost all of the light rays that reach it are scattered.
b)
Almost all of the light rays that reach it are absorbed.
c)
Almost all of the light rays that reach it are reflected.
d)
Almost all of the light rays that reach it pass through it.
20.
Which is translucent?
a)
tissue paper
b)
air
c)
wood
d)
clear plastic
21.
What is most likely to happen to light that hits an opaque object?
a)
All of the light passes through the object.
b)
None of the light passes through the object.
c)
Most of the light disappears.
d)
Some of the light passes through the object.
22.
Which is transparent?
a)
a wooden fence
b)
clean water
c)
aluminum foil
d)
a purple balloon
23.
If you wanted a gift to be a surprise, what kind of container would you put it in?
a)
transparent
b)
thick
c)
opaque
d)
translucent
24.
Objects appear white because they absorb all colors, and objects appear black because they reflect all colors.
a)
True
b)
False
25.
The moon is a source of light.
a)
True
b)
False
26.
The intensity of light is related to its brightness.
a)
True
b)
False
27.
White light can be separated into different colors by using a__________.
a)
microscope
b)
prism
c)
mirror
d)
convex lens
28.
What do water droplets in a rainbow act like?
a)
prisms
b)
flashlights
c)
reflectors
d)
lasers
29.
How does light travel?
a)
in all directions
b)
in transverse waves
c)
in a zig zag line
d)
back and forth
30.
What form of energy travels faster? Light or Sound?
a)
light
b)
sound
31.
Why does light bend when it moves from one material to another?
a)
because it travels slow
b)
because it travels fast
c)
because it changes speed and bends
d)
light does not bend
32.
Light waves need matter to travel.
a)
True
b)
False
33.
You can see through water because ---
a)
it's opaque
b)
it's translucent
c)
it's transparent
d)
it's wet
34.
What happens when light hits a transparent object?
a)
The light reflects.
b)
The light is absorbed.
c)
The light is blocked.
d)
The light passes through it.
35.
What is construction paper?
a)
transparent
b)
translucent
c)
opaque
36.
Tissue paper is __________?
a)
opaque
b)
transparent
c)
translucent
37.
The bending of light as it moves from one material to another is ---
a)
refraction
b)
reflection
c)
translucent
d)
absorbed
38.
Which of the following materials would bounce back almost all the light waves that hit it?
a)
a white wall
b)
wax paper
c)
a mirror
d)
a window
39.
Wax paper is ---
a)
opaque
b)
translucent
c)
transparent
40.
What happens to light when it strikes a mirror?
a)
it reflects
b)
it bounces off
c)
it absorbs
d)
it makes a shadow
41.
Smooth surfaces _______ a lot of light.
a)
reflect
b)
bend
c)
absorb
d)
twist
42.
What does it mean to reflect?
a)
bounce off
b)
bend
c)
refract
d)
energy
43.
What does it mean to refract?
a)
bounce off
b)
to bend
c)
curve outward
d)
reflect
44.
Why do we see a GREEN leaf?
a)
because humans color it that color
b)
because it absorbs green and reflects all the other colors
c)
it absorbs every color except for green
45.
What happens when light hits a mirror?
a)
it makes a color
b)
it reflects
c)
it makes a rainbow
d)
it passes through
46.
How does light travel?
a)
in a wavy path
b)
in a straight path
c)
in a zig zag path
47.
Is your laptop opaque?
a)
Yes
b)
No
48.
A convex lens curves ____________.
a)
outward
b)
inward
c)
opaque
d)
refracts
49.
What does transparent mean?
a)
some light is able to pass through
b)
no light is able to pass through
c)
all light is able to pass through
50.
A concave lens curves _____________.
a)
outward
b)
inward
c)
opaque
51.
What is a prism?
a)
a transparent object that separates white light
b)
an opaque object that appears black
c)
a translucent object
52.
Why do we see objects as black?
a)
They absorb all the light
b)
They reflect all the light
c)
They absorb some light and reflect
53.
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
54.
What property of light waves can be observed as light waves pass from one medium to another and change speed?
a)
Diffraction
b)
Refraction
c)
Reflection
d)
Separation
55.
All of these are transverse waves except
a)
radio waves.
b)
x-ray waves.
c)
ultraviolet waves.
d)
sound waves.
56.
A white-colored fabric is dyed with a chemical that reflects red light and absorbs both green and blue light. Which color best describes how the fabric looks to the human eye?
a)
red
b)
blue
c)
white
d)
green
57.
Which of the following is an example of an electromagnetic wave?
a)
a radio wave
b)
a water wave
c)
the oscillation of a spring
d)
the vibration of a violin string
58.
Which of the following statements best explains why lightning is seen before thunder is heard?
a)
Electromagnetic waves travel faster than mechanical
waves in air.
waves in air.
b)
Electromagnetic waves have a higher frequency
than mechanical waves.
than mechanical waves.
c)
Electromagnetic waves experience less interference
than mechanical waves.
than mechanical waves.
d)
Electromagnetic waves form faster than mechanical
waves during a thunderstorm.
waves during a thunderstorm.
59.
a)
a longer wavelength and less energy.
b)
a longer wavelength and more energy.
c)
a shorter wavelength and less energy.
d)
a shorter wavelength and more energy.
60.
Electromagnetic waves with low frequencies have been used for long- distance underwater communication. These waves most likely belong to which of the following parts of the electromagnetic spectrum?
a)
gamma rays
b)
infrared waves
c)
radio waves
d)
x-rays
61.
a)
Infrared Radiation
b)
UV Rays
c)
X-rays
d)
Gamma Rays
62.
Ella is learning about different types of electromagnetic radiation. She makes the following list about one frequency of radiation:
1. Can damage cells of living things
2. Blocked by Earth’s ozone layer
Which type of radiation does Ella’s list describe?
1. Can damage cells of living things
2. Blocked by Earth’s ozone layer
Which type of radiation does Ella’s list describe?
a)
Infrared
b)
Microwave
c)
Ultraviolet
d)
Visible
63.
Which of the following statements describes an advantage of total internal reflection within an optical fiber?
a)
It converts electrical signals into optical
signals.
signals.
b)
It converts optical signals into electrical
signals.
signals.
c)
It allows optical signals to be transmitted along
a curved path.
a curved path.
d)
It allows electrical signals to be transmitted
along a curved path.
along a curved path.
64.
An engineer is designing an instrument to examine the interior of a piece of wood without cutting it. The engineer decides to pass electromagnetic radiation through the wood to a detector on the other side. Which type of electromagnetic radiation would be most suitable for this investigation?
a)
Visible light
b)
Radio waves
c)
X-rays
d)
Ultraviolet light
65.
a)
gamma rays
b)
infrared
c)
ultraviolet
d)
microwaves
66.
The bouncing off of light rays from the surface of an object such as a mirror or other shiny surface.
a)
mirror
b)
laser
c)
reflection
d)
refraction
67.
To cause to appear larger
a)
concave
b)
magnify
c)
convex
d)
telescope
68.
The small part of the electromagnetic spectrum that the human eye can see including the colors red, orange, yellow, green, blue, violet
a)
prism
b)
kaleidoscope
c)
laser
d)
light spectrum
69.
An instrument that uses lenses and sometimes mirrors to make distant objects appear larger by gathering and focusing light.
a)
telescope
b)
kaleidoscope
c)
laser
d)
mirror
70.
A piece of clear material, such as glass or plastic, that bends light rays as they apss through, can either focus or spread light
a)
lens
b)
telescope
c)
magnify
d)
refraction
71.
Smooth surface that reflects an image of what is in front of it.
a)
relfection
b)
mirror
c)
lens
d)
refraction
72.
Device that makes a strong, narrow beam of light.
a)
kaleidoscope
b)
prism
c)
laser
d)
mirror
73.
A tube with mirrors and colorful beads of glass inside of it, when the tube is held to the eye and rotated, patterns can be seen as the objects reflect off the mirrors.
a)
mirror
b)
prism
c)
telescope
d)
kaleidoscope
74.
A solid glass or plastic object that light can pass through that refracts light and splits it into the colors of the rainbow.
a)
kaleidoscope
b)
prism
c)
telescope
d)
lens
75.
A solid glass or plastic object that light can pass through that refracts light and splits it into the colors of the rainbow.
a)
kaleidoscope
b)
prism
c)
telescope
d)
lens
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