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light

Total questions: 70

Worksheet time: 43mins

Name
Class
Date
1.

One of these is not a source of light

a)
b)
c)
d)
2.

Which of the following shows the principle of light refraction? Tick the correct answers.

a)

A

b)

B

c)

D

d)

E

e)

F

3.

What is the object helps the customers at a salon to look the new hair style of his back of head?

a)

periscope

b)

hand held mirror

c)

plane mirror

d)

dental mirror

4.

What is the object helps the customers at a show store to choose their favourite shoes?

a)

periscope

b)

hand held mirror

c)

plane mirror

d)

dental mirror

5.

What is the object helps the dentist to see the patient's dental condition?

a)

periscope

b)

hand held mirror

c)

plane mirror

d)

dental mirror

6.
Swimming pools and the ocean look shallower than they really are due to:
a)
reflection 
b)
dispersion
c)
refraction
d)
total internal reflection
7.

What is the conclusion from your observation in this picture?

a)

Light travels in a straight line

b)

Light can be refracted

c)

Light can be reflected

d)

Light can pass through a transparent material

8.

Diagram shows the condition of a spoon in a glass of water.

What can be observed about the spoon?

a)

The spoon looks bent.

b)

The water is clearer.

c)

The water level rises.

d)

Light is refracted.

9.
Which of these are examples of NATURAL sources of light?
a)
Sun 
b)
Stars
c)
Lightning
d)
ALL of them
10.

What help him to see around in the cave ?

a)

sun

b)

torch

11.

Light helps us to ….

a)

see

b)

hear

c)

feel

12.

Things that make light are called...

a)

Light sources

b)

Sound sources

c)

Dark sources

13.

In which room could you see the most objects?

a)

a room with some light

b)

a room with low light

c)

a room with bright light

14.

Tick the man made sources of light.

a)
b)
c)
d)
e)
15.

Which picture shows NO LIGHT ?

a)
b)
c)
16.

When there is no light at all, we call it as...

a)

total darkness

b)

bright

c)

natural

17.

When there is very little or no light, we say it is...

a)

dark

b)

light

c)

sound

d)

cloudy

18.

Moon is ...

a)

a light source

b)

NOT a light source

19.

The example of man - made light source is . . . .

a)

Thunder

b)

Lightning

c)

Candle

20.

What is our main source of light?

a)

Lightbulbs

b)

The Moon

c)

The Sun

d)

Computers

21.

Which one is a natural source of light?

a)
b)
22.

Which is NOT a source of light?

a)

firefly

b)

ball

c)

sun

d)

torch

23.

Which of this is the light source?

a)
b)
c)
d)
24.
a copy of an object formed by reflected or refracted rays of light
a)
image
b)
reflection
c)
regular reflection
d)
diffuse reflection
25.
straight lines that represent light waves
a)
rays
b)
image
c)
reflection
d)
visible light
26.
What does incidence angle equal?
a)
reflection angle
b)
∠C
c)
∠D
d)
all of these
27.
If the angle of incidence is 45 degree, what is the angle between the incident ray and reflecting surface
a)
45
b)
90
c)
180
d)
none of the above
28.
what is the angle between the reflected ray and the normal called as
a)
angle of incidence
b)
angle of reflection
c)
angle of convergent
d)
angle of divergent
29.
what is the angle between the incident ray and the normal called as
a)
angle of incidence
b)
angle of reflection
c)
angle of convergent
d)
angle of divergent
30.
What is the line MN called in the given diagram
                               
a)
incident ray
b)
reflected ray
c)
reflecting surface
d)
normal
31.
straight lines that represent light waves 
a)
Rays
b)
image
c)
lines
d)
visible light
32.
Why can you see most objects? 
a)
they emit light
b)
light refracts through them
c)
light reflects off them
d)
They absorb light
33.
The angle produced as a source of light bounces off a reflecting surface is called ______.
a)
angle of crookedness
b)
angle of reflection
c)
angle of incidence
d)
angle of bounce
34.
The imaginary line perpendicular to a reflecting surface is called _____.
a)
crooked line
b)
parallel line
c)
angular line
d)
normal line
35.
The ray of light that strikes a reflecting surface is called ________.
a)
incident ray
b)
reflected ray
c)
normal ray
d)
none of the above
36.

Refer to the image.

4 lines
37.

Refer to the image.

4 lines
38.

Proxima Centauri is the closest star to the Earth and it's take 4.3 light years to travel from the Earth to it. How long does it take light from Proxima Centauri to reach the Earth?

a)

43 years

b)

4.3 years

c)

430 years

d)

4300 years

39.

Penumbra occurs when the edge of shadow are sharp.

a)

True

b)

False

40.

Does this object give off its own light?

a)

Yes

b)

No

41.

Does this object give off its own light?

a)

Yes

b)

No

42.

Which of the following is opaque?

a)

Water

b)

Baking paper

c)

Book

d)

Window

43.

Which of the following is translucent?

a)

Key

b)

Book

c)

Baking paper

d)

Wall

44.

Opaque means....

a)

All light can passes through it.

b)

Some light can passes through it.

c)

No light can passes through it.

45.

Things make shadows because they __ the light

a)

block

b)

pass

46.

What happens when light hits an object? (Multiple Answers)

a)

Some light gets absorbed by the object.

b)

Some light bounced off to your eye.

c)

Some light get vibration to the object.

d)

The object will change direction.

47.

Light bulb is a non-luminous object.

a)

True

b)

False

48.

Mirror is a luminous object.

a)

True

b)

False

49.

Star is a luminous object.

a)

True

b)

False

50.

All light has source.

a)

True

b)

False

51.

What is light? (Multiple Answers)

a)

It is a force.

b)

It travels through in vacuum.

c)

It travels in straight lines.

d)

The most fastest thing in the world.

52.

Tick the correct of TWO devices which use the principle of light reflection in our daily lives.

a)
b)
c)
d)
53.

The following diagram shows the ray diagram when a torch light is torched towards a mirror. Which of the following is the correct reflected ray?

a)
b)
c)
d)
54.

The following diagram shows a driver who could see the image of a vehicle behind him without turning his back.

Why?

a)

Light travels in a straight line

b)

Light is refracted

c)

Light is reflected

d)

Light travels in two different mediums

55.

There is no shadow formed on the screen. Why?

a)

The object is opaque

b)

The light source is too dim

c)

The object is transparent

d)

The object is translucent

56.

How to increase the size of the shadow on the screen?

a)

Move the light source farther from the object

b)

Move the object closer to the screen

c)

Change the type of object used

d)

Move the object closer to the light source

57.

What conclusion can be made from this investigation?

a)

Light travels in parallel

b)

Light travels in a straight line

c)

Light cannot pass through and opaque object

d)

Light cannot bend

58.

How does the light travels?

a)

in parallel

b)

in a straight line

c)

on its own orbit

d)

on its own path

59.

There are two factors that affect the size of shadow. What are the factors? Tick the correct answers.

a)

Size of the screen

b)

Distance of object from the screen

c)

Distance of object from the light source

d)

Size of the light source

60.

This investigation is carried out to show that

a)

light travels in a straight line

b)

light can be seen through the holes

c)

light penetrates a transparent object

d)

light travels in many ways

61.

What conclusion can be made from this investigation?

a)

Light travels in parallel

b)

Light travels in a straight line

c)

Light cannot pass through and opaque object

d)

Light cannot bend

62.

Which of the following shows that light travels in a straight line?

a)
b)
c)
d)
63.

This situation shows that

a)

light travels in a straight line

b)

light is everywhere

c)

light penetrates certain objects

d)

light is produces by the Sun

64.
If a black and white car were in the parking lot all day. Compare the temperatures of the two cars.
a)
The black car would be cooler.
b)
The white car would be hotter.
c)
The black car would be hotter.
d)
They would be the same
65.
Blurs light as it passes through
a)
Transparent
b)
Translucent
c)
Opaque
d)
Refraction
66.
The term for any wave that hits a surface and bounces off
a)
Transparent
b)
Translucent
c)
Refraction
d)
Reflection
67.
The bending of waves as they pass from one substance into another.
a)
Reaction
b)
Reflection
c)
Refraction
d)
Repost
68.

What makes it possible to see an object when looking through a periscope?

a)

It contains mirrors that reflect the object.

b)

It magnifies small objects so they can be seen.

c)

It absorbs the light rays passing through it.

d)

It separates the light into different colors.

69.

Light travels in straight lines until reflected by another object. Which illustration best shows the light being reflected?

a)
b)
c)
d)
70.

Which of these provides the best explanation for why the pencil appears broken?

a)

The pencil absorbs the light rays that hit it.

b)

Water reflects light rays away from the pencil.

c)

Light rays are bent by the water in the glass.

d)

The surface of the water reflects the light rays.

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6th - 8th Grade