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Gr 3- Sources and Uses of Light

Total questions: 45

Worksheet time: 1hrs 23mins

Name
Class
Date
1.

Sun is a natural source of light

a)

True

b)

False

2.

The light received from candle is...

a)

Natural Source of light

b)

Artificial Source of light

3.

Electric bulb is this source of light

a)

Artificial

b)

Natural

4.

Jelly fish are bio-luminescent and create their own light

a)

False

b)

True

5.

Neon lamp is a Natural source of light

a)

True

b)

False

6.

The Sun is a massive ball of fire. It is the major source of light for the earth

a)

True

b)

False

7.

Moon produces its own light

a)

True

b)

False

8.

Every star produces it own light

a)

True

b)

False

9.

Fluorescent tube light, incandescent lamp and Neon lamp are examples of Natural Sources of Light

a)

True

b)

False

10.

Which one of these is the most important source of light on earth?

a)
b)
c)
d)
11.

Identify the natural sources of light. Choose all possible answers.

a)
b)
c)
d)
12.

We cannot see if there is no _____________________.

a)

heat

b)

light

c)

sound

13.

TRUE or FALSE:

A lightbulb is a source of sound.

a)

TRUE

b)

FALSE

14.

TRUE or FALSE:

A candle is a source of heat and light.

a)

TRUE

b)

FALSE

15.

Is this a natural or artificial light source?

a)

Natural source

b)

Artificial source

c)

I don't know

16.

Is this a natural or artificial light source?

a)

Artificial source

b)

Natural source

17.

Does it have natural or artificial light?

a)

Natural light

b)

Artificial light

c)

I don't know

18.

Does the glowworm have natural or artificial light?

a)

Artificial light

b)

Natural light

19.

Is this a natural or artificial light source?

a)

Natural source

b)

Artificial source

20.

Does the firefly have natural or artificial light?

a)

Artificial light

b)

Natural light

c)

I don't know

21.

Is this a natural or artificial light source?

a)

I don't know

b)

Artificial source

c)

Natural source

22.

Is this a natural or artificial light source?

a)

Artificial source

b)

I don't know

c)

Natural source

23.

Is this a natural or artificial light source?

a)

Artificial source

b)

I don't know

c)

Natural source

24.

Is this a natural or artificial light source?

a)

I don't know

b)

Natural source

c)

Artificial source

25.
Light can travel through empty space.
a)
True
b)
False
26.
You can see through water because ---
a)
it's opaque
b)
it's translucent 
c)
it's transparent
d)
it's wet
27.
Tissue paper is __________?
a)
opaque
b)
transparent
c)
translucent 
28.
Luminous means...
a)
Gives out its own light
b)
Reflects light from other things
29.
What is an example of artificial light?
a)
the sun 
b)
the stars 
c)
bioluminescence 
d)
neon light 
30.
The picture here is an example of...
a)
artificial light called bioluminescence
b)
artificial light called chemiluminescence
c)
natural light called bioluminescence
d)
natural light called chemiluminescence
31.

Light is a form of energy.

a)

True

b)

False

32.
Which are the two type of light sources?
a)
Artificial and Natural
b)
Natural and Invented
c)
Artificial and Not Artificial
d)
All of them
33.
Which of these are examples of NATURAL sources of light?
a)
Sun 
b)
Stars
c)
Lightning
d)
ALL of them
34.
What does ARTIFICIAL mean?
a)
Made by humans
b)
Natural
35.

This insect is a natural source of light. Can you tell what insect it is?

a)

Mosquito

b)

Dragon fly

c)

Fire fly

d)

Beetle

36.

Which one is a man made source of light

a)

The stars

b)

The sun

c)

Candle

37.

All these living things produce light EXCEPT __________

a)
b)
c)
d)
38.

2. Light travels through which material?

a)

Wood

b)

Pure glass

c)

Metal

d)

Cardboard

39.

3. Some objects like ___________ can block light from coming through.

a)

Pure glass

b)

Wood

c)

pure plastic

d)

eye glasses

40.

5. What happens when an object is opaque?

a)

all light is able to pass through

b)

no light is able to pass through

c)

some light is able to pass through

d)

it is black

41.

The energy that makes things visible is known as what?

a)

Sound

b)

Light

c)

Shadow

42.

Light energy also produces what other energy?

a)

Wave

b)

Heat

c)

Sound

43.

Which word describes how light travels when it passes from air, to water?

a)

straight

b)

curved

c)

circular

d)

bent

44.

Which would reflect light rather than bend it?

a)

magnifying glass

b)

crystal

c)

prism

d)

mirror

45.

These toys are blocking all of the light, creating black shadows on the wall. These toys block all of the light, because they are made of materials that are:

a)

Transparent

b)

Translucent

c)

Opaque

d)

Transaction

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