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WorksheetsP1.3 Light
Total questions: 50
Worksheet time: 17mins
Name
Class
Date
1.
What do sources of light do?
a)
Refract light
b)
Absorb light
c)
Reflect light
d)
Emit light
2.
What is an object that gives out light said to be?
a)
Opaque
b)
Translucent
c)
Luminous
d)
Transparent
3.
What word describes materials that transmit most light?
a)
Luminous
b)
Opaque
c)
Translucent
d)
Transparent
4.
What objects allow some light to pass through but it is scattered so you can't see clearly?
a)
Translucent
b)
Luminous
c)
Emitter
d)
Non-luminous
5.
What term describes materials that do not transmit light?
a)
Non-luminous
b)
Transparent
c)
Opaque
d)
Translucent
6.
How does light travel?
a)
As particles in bent lines
b)
As particles in straight lines
c)
As waves in straight lines
d)
As waves in bent lines
7.
What can light travel through?
a)
Solids, liquids, gases and vacuums
b)
Solids, liquids and gases
c)
Liquids, gases and vacuums
d)
Solids, liquids and vacuums
8.
What is the speed of light?
a)
300 km/s
b)
300,000 m/s
c)
300 m/s
d)
300,000 km/s
9.
What is a light-year?
a)
The time it takes light to reach Earth
b)
A year where the Sun does not set
c)
The distance light travels in a year
d)
The average speed of light in a year
10.
Which of the following is not a source of light?
a)
A fire
b)
A firefly
c)
The moon
d)
A light bulb
11.
What is the name for a smooth, flat mirror?
a)
Convex mirror
b)
Plane mirror
c)
Concave mirror
d)
Even mirror
12.
Which statement is true of uneven, rough surfaces?
a)
They reflect light evenly
b)
They do not produce reflections
c)
They produce virtual images
d)
They act as mirrors
13.
What sort of image is formed in a mirror?
a)
Pretend image
b)
Real image
c)
Upside down image
d)
Virtual image
14.
How do mirror images appear?
a)
Same size, shape & distance as the object
b)
Larger than, but the same shape, as the object
c)
Smaller than, but the same shape, as the object
d)
Same size and shape as the object but further away
15.
What is true of an image seen in a mirror?
a)
Appears back to front
b)
Appears further away
c)
Appears in black and white
d)
Appear inverted (upside down)
16.
How does the angle of incidence compare to the angle of reflection?
a)
It varies
b)
Equal to
c)
Larger than
d)
Smaller than
17.
What is the name of the law for the relationship between the incident ray and the reflected ray?
a)
Law of Incidence
b)
Law of Refraction
c)
Law of Reflection
d)
Ray's Law
18.
What is the name of the imaginary line at 90 degrees to the mirror?
a)
Normal Line
b)
Perpendicular Line
c)
Line of Reflection
d)
Line of Incidence
19.
What is the name of the light ray that hits the mirror?
a)
Incident Ray
b)
Accident Ray
c)
Normal Line
d)
Reflected Ray
20.
If the angle of the reflected ray is 50 degrees, what is the angle of the incident ray?
a)
You can't tell
b)
50 degrees
c)
25 degrees
d)
100 degrees
21.
What name is given when light changes direction?
a)
Diffraction
b)
Refraction
c)
Reflection
d)
Dispersion
22.
Why does light change direction?
a)
Because it travels at different speeds through different mediums
b)
To allow us to see when it is dark
c)
To bend around an object
d)
Because it bounces off different materials
23.
Which of these does light travel fastest through?
a)
Glass
b)
Air
c)
Water
d)
Steel
24.
What is another name for materials such as air and water?
a)
Maximum
b)
Medium
c)
Median
d)
Minimum
25.
What happens when light enters a glass prism from the air?
a)
It slows down
b)
Nothing
c)
It speeds up
d)
It reflects
26.
What happens to the direction of light as it enters a glass prism from the air?
a)
It doesn't change direction
b)
Bends away from the normal line
c)
Becomes the normal line
d)
Bends towards the normal line
27.
Which part of your body contains a lens?
a)
Eye
b)
Ear
c)
Liver
d)
Mouth
28.
Which type of lens causes light rays to converge (meet at a point)?
a)
Concave
b)
Convox
c)
Convex
d)
Concove
29.
What is the name for the point where light rays converge after passing through a lens?
a)
Convergence Point
b)
Focal Point
c)
Focus Point
d)
Lens Point
30.
What is the name for a glass object that refracts light?
a)
Prism
b)
Eye
c)
Medium
d)
Lens
31.
Which part of the eye is a transparent, protective outer layer?
a)
Lens
b)
Cornea
c)
Retina
d)
Iris
32.
Which part of the eye is a muscle that controls the size of the pupil?
a)
Iris
b)
Cornea
c)
Retina
d)
Lens
33.
Which part of the eye can change shape to refract light?
a)
Retina
b)
Optic Nerve
c)
Lens
d)
Pupil
34.
Which part of the eye contains photoreceptors that are sensitive to light?
a)
Lens
b)
Retina
c)
Optic Nerve
d)
Cornea
35.
Which statement is true of the image produced on the retina?
a)
Larger
b)
Black & White
c)
Virtual
d)
Inverted
36.
What are the two types of photoreceptors in the eye?
a)
Rods and cones
b)
Bods and Gnomes
c)
Rads and canes
d)
Cods and drones
37.
What part of the eye carries electrical signals to the brain?
a)
Optic nerve
b)
Lens
c)
Iris
d)
Retina
38.
What happens to your pupil in dim light?
a)
It changes colour
b)
It disappears
c)
It gets smaller
d)
It gets larger
39.
What is true of the image produced by a pinhole camera?
a)
Inverted and real
b)
Right way up and virtual
c)
Right way up and real
d)
Inverted and virtual
40.
How is a pinhole camera different to the eye?
a)
It contains an opening for light to pass through
b)
It uses light rays
c)
It inverts the image
d)
It does not refract light
41.
What is it called when white light is split up into the colours it is made up of?
a)
Diffusion
b)
Refraction
c)
Diffraction
d)
Dispersion
42.
Which colour of light is refracted the least?
a)
Red
b)
Green
c)
Yellow
d)
Violet
43.
What are red, blue and green colours?
a)
High frequency colours
b)
Secondary colours
c)
Primary colours
d)
Low frequency colours
44.
What colour does red and blue make?
a)
Magenta
b)
Cyan
c)
Yellow
d)
White
45.
What colour does red and green make?
a)
Magenta
b)
Cyan
c)
White
d)
Yellow
46.
What colour will an object that absorbs all the colours appear?
a)
Red
b)
Black
c)
White
d)
Transparent
47.
Why does grass appear green?
a)
It reflects yellow and cyan
b)
It absorbs yellow and cyan
c)
It absorbs green light
d)
It reflects green light
48.
What can be used to only allow certain colours of light to pass through?
a)
Pinhole camera
b)
Lens
c)
Filter
d)
Prism
49.
A red apple is wrapped in a white filter. What colour will it appear?
a)
Black
b)
Violet
c)
White
d)
Red
50.
A red apple is wrapped in a blue filter. What colour will it appear?
a)
Blue
b)
Black
c)
White
d)
Red
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