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Light, Shadows and Evaporation.

Total questions: 90

Worksheet time: 1hrs 2mins

Name
Class
Date
1.

Which one of the following diagrams correctly shows how we can see an object?

a)

b)

c)

d)

2.

Which one of the following shows how the girl is able to see the book on the table?

a)

b)

c)

d)

3.

The diagram below shows four boys at positions A, B, C and D.

Which two boys are able to see each other in the mirror?

a)

A and C

b)

A and D

c)

B and C

d)

C and D

4.

The diagram below shows four cars at positions A, B, C and D.

The cars are travelling in the directions as shown by the arrows. Which of the drivers can see each other with the help of the mirror?

a)

A and B

b)

A and C

c)

B and C

d)

C and D

5.

I am able to see an object when it (a)   light or when it is a source of light.

6.

A source of light or light source is an object that ________________.

a)

gives off heat and light

b)

gives off heat

c)

gives off light

7.

Which of the following is not a source of light?

a)

b)

c)

d)

8.

Which is the main source of light on Earth?

(a)  

9.

Having a source of light helps us to ________________.

a)

hear

b)

feel

c)

see

d)

touch

10.

Susan looks into a wooden cupboard as shown.

Which statement explains why she can see the glass?

a)

No light passes through wood.

b)

Light is reflected from the toys.

c)

Light passes through the glass easily.

d)

Some light is reflected from the glass.

11.

Amy had three different types of fabric, A, B and C. She shone a torch at each fabric and recorded the amount of light passing through with a light sensor for 10s.

Which graph shows her results correctly?

a)

b)

c)

d)

12.

  1. The energy that we use comes from sources of energy. The main source of energy is ….



a)

the sun

b)

the stars

c)

the earth

d)

the moon

13.

Energy from the sun is also called as solar energy. It consists of ….

a)

electrical and heat energy

b)

chemical potential energy

c)

light and heat energy

d)

light and sound energy

14.

Alternative sources of energy are shown by ….

a)

A-B-C

b)

A-C-E 

c)

B-C-D

d)

C-D-E

15.

The sources of chemical potential energy are shown by .…


a)

A and B

b)

B and C

c)

C and D

d)

D and E

16.

The sources of energy shown in the table are all renewable, except ….


a)

running water

b)

fossil fuels

c)

biofuels

d)

wind

17.

One of alternative sources of energy is geothermal energy. It comes from .…

a)

running water

b)

within the earth

c)

the center of an atom

d)

carbon dioxide and oxygen

18.

Some things can give out light directly. The terminology for those things are ….

a)

light sources

b)

reflecting part

c)

retina

d)

sunrays

19.

Imagine we are in a room with one light bulb on. In that room, there are chairs, a table and some books. We can see those things because the light from the light bulb is ….

a)

bouncing to random direction

b)

blocked by certain objects

c)

bright enough to distribute

d)

reflected into our eyes

20.

The objects that light completely can pass though are shown by number ….

a)

1 and 3

b)

2 and 4 

c)

1 and 2

d)

1 and 4

21.

An opaque object is shown by number ….

a)

1

b)

2

c)

3

d)

4

22.

The translucent object is shown by number ….

a)

1

b)

2

c)

3

d)

4

23.

Wina placed a torch in front of a screen then put a pen between the torch and the screen. If Wina turned the torch on, the pen formed ….

a)

a bright shadow

b)

a dark shadow

c)

a bright light

d)

a reflection

24.

Some things can reflect light from their surfaces. These things are useful because we use the reflection on their surface, except ….

a)

rearview mirror

b)

magnifying glass

c)

periscope

d)

mirrors

25.

We can hear the sound of drum from the sound wave. This sound wave travels to our ears from ….

a)

the air

b)

our brain

c)

  headset

d)

the skin

26.

Sound has different high and low quality. Different high and low quality of sound is called as….

a)

transmission

b)

vibration

c)

loudness

d)

pitch

27.

Energy that we use to produce sound affects its loudness. The more energy we use, ….

a)

the louder sound we produce

b)

the softer sound we produce

c)

the thicker sound we produce

d)

the longer sound we produce

28.

The pitch of a sound depends on how slowly or quickly an object vibrates. If the vibration is slow, the sound produced has …

a)

a high pitch

b)

a low pitch

c)

a fast pitch

d)

a slow pitch

29.

The tautness of the string also affects pitch. When a string is tauter, it….

a)

produces a higher pitch

b)

                               produces a lower pitch

c)

uses more pitch

d)

uses less pitch

30.

Musical instruments usually have strings with different lengths and thickness. That is because ….

a)

they effect the sound pitch

b)

  they produce different vibration

c)

they use different loudness

d)

  they determine the quality

31.

The distance of our ears to the sound source effects the loudness of the sound we hear. If we want to hear a louder sound, we should … the sound source.

a)

move away from

b)

 move further from

c)

   get closer to

d)

      not move

32.

Energy that travels at incredible speed through the universe:

a)

Sound Energy

b)

Light Energy

c)

Electrical Energy

d)

Mechanical Energy

33.

Light energy that bounces off objects:

a)

Refraction

b)

Repetition

c)

Reflection

d)

Lens

34.

The figure of an object formed by light:

a)

Light

b)

Mirror

c)

Image

d)

Lens

35.

Any object that has a reflective image:

a)

Mirror

b)

Shadow

c)

Prism

36.

The bending of light rays when they pass through a substance:

a)

Reflection

b)

Refraction

c)

Image

d)

Mirror

37.

A clear piece of curved glass or plastic that refracts light:

a)

Demonstrate

b)

Transmit

c)

Lens

d)

Water

38.

A triangular piece of glass which allows light to be refracted into the colors of the rainbow.

a)

Rain drop

b)

Prism

c)

Telescope

d)

Mirror

39.

An instrument that uses lenses to gather and focus light from distant objects.

a)

Microsope

b)

Water

c)

Mirror

d)

Telescope

40.

To prove or show example of something:

a)

Telescope

b)

Demonstrate

c)

Mirror

d)

Lens

41.

When light passes right through without bending or bouncing:

a)

Reflection

b)

Refraction

c)

Absorbing

d)

Transmit

42.

When a material makes light stop, without passing through:

a)

Absorb

b)

Reflect

c)

Refract

d)

Transmit

43.

What is a substance or material that light energy interacts with?

a)

medium

b)

large

c)

conductor

d)

insulator

44.

A lens that s thinner in the middle and makes objects appear smaller and closer.

a)

Concave

b)

Convex

c)

Prism

45.

A lens that is thicker in the middle and makes objects appear larger and farther away.

a)

Concave

b)

Convex

c)

Absorb

d)

Transmit

46.

Which one of these are NOT natural Light?

a)

Stars

b)

Thunder

c)

Light bulb

d)

Moon

47.

Which one is a NATURAL source of light?

a)

Lighting

b)

Fireworks

c)

Candle

d)

Moon

48.

For a shadow to be formed, three conditions are necessary, EXCEPT

a)

the presence of an object to block the light.

b)

the presence of a surface or screen that the light can fall on

c)

the presence of a light source.

d)

the presence of a shadow.

49.

Look at this picture. If these fruits are put under the light, how many shadow do they form?

a)

One

b)

Two

c)

Three

d)

Four

50.

Which one of these objects are TRANSLUCENT? Choose TWO answers.

a)

Sunglasses

b)

Plastic bag

c)

Tracing paper

d)

Apple

51.

What is the INCORRECT fact about Light? Choose TWO answers.

a)

Light is an energy that

travels in waves through

space.

b)

Light travels very slow and

in straight lines

c)

Light can pass through

some things, but not others

d)

Light can pass through everything

52.

Sue and Joe are carrying out

a simple experiment.

With the hose curve, Joe

can’t see the light from the

candle through the hose, instead they can see it when the hose is straight. What can you conclude

from their experiment?

a)

Light travels in transparent object

b)

Light travels in a straight line

c)

Light travels in a long line

d)

Light travels in a short line

53.

How Sam and Thomas can read the book?

a)

Light hits the book and bounces it off to their eyes so they can read it

b)

Light comes from the book to their eyes so they can read it

c)

The book produces light

d)

The light travels from the lamp directly to their eyes

54.

Which one of these thing is NON luminious object?

a)

Fire

b)

Candle

c)

Shoes

d)

Bulb

55.

And which one of these objects are LUMINIOUS objects? Choose TWO answers.

a)

Shoes

b)

Firework

c)

Stars

d)

Doll

56.

Smooth surface reflect most light that falls on it in the same direction. What do we call this kind of reflection?

a)

Diffuse like a water

b)

Regular like a mirror

c)

Smooth like butter

d)

Rough like crocodile skin

57.

We can’t see a clear picture because a rough surface reflects the incoming rays in different directions. What do we call this kind of refelction?

a)

Ordinary

b)

Regular

c)

Diffuse

d)

Wavy like a salsa dance

58.

What is the blue part?

a)

Angle of incidence

b)

Angle of reflection

c)

Incoming ray

d)

Outgoing ray

59.

And which one is 'outgoing ray?'

a)

Blue part

b)

Green part

c)

Brown part

d)

Red part

60.

Now which one is angle of incidence ?

a)

Green like matcha

b)

Brown like chocolate

c)

Blue like sky

d)

Red like love

61.

And what is brown like chocolate part?

a)

Angle of incidence

b)

Outgoing ray

c)

Angle of reflection

d)

Incoming ray

62.

Which cup that shows the flame inside it clearly? And why?

4 lines
63.

Which of this following objects creates lightest, less dark, and darkest shadow?

a)

G: DARKEST, H: LESS DARK, I: LIGHTEST

b)

G: LESS DARK, H: DARKEST, I: LIGHTEST

c)

G: LIGHTEST, H: LESS DARK, I: DARKEST

d)

NONE OF THEM

64.

The length of a shadow depends on the angle at which the light beam is coming from. It means that the FURTHER AWAY from top the light beam is, it will create ______________ shadow. 

a)

Shorter

b)

Longer

c)

Larger

d)

Tiny

65.

______________ object forms clear SHADOW. 

a)

Transparent

b)

Translucent

c)

Opaque

d)

Dark

66.

What is light.

a)

Light is a robot

b)

Light is a object that glows and has heat

c)

Light is a place

d)

Light is an object

67.

Where does light come from?

a)

Light comes from food

b)

Light comes from protons

c)

Light comes from atoms

d)

Light comes from the sun

68.

How do we see things?

a)

We see things with the object we are looking at

b)

We see thing with our eyes

c)

We see things with using our nose

d)

None of them

69.

What is light made of?

a)

Light is made of materials

b)

Light is made of all the the colours mixed together

c)

Light is made of clouds in the night

70.

Spot the odd one out.

a)
b)
c)
d)
71.

Who invented light?

a)

Thomas edison

b)

Albert einstein

c)

Alexander bell

d)

Nokola tesla

72.

How does light help us?

a)

Light gives us darkness

b)

Light gives us heat

c)

Light gives us brightness

d)

All of them

73.

When was light invented?

a)

1990

b)

1863

c)

1760

d)

1879

74.

Which part of the eye do we see things?

a)

Pupil

b)

Retina

c)

Sclera

d)

None of them

75.
What is being blocked when a shadow is formed?
a)
Light Source
b)
Light Path
c)
Object
d)
Eye
76.
The three primary colors of light are
a)
Red, Blue, Yellow
b)
Pink, Green, Blue
c)
Violet, Green, Red
d)
Blue, Green, Red
77.
Why does an apple appear red?
a)
All colors are absorbed & none are reflected
b)
All colors are absorbed except for blue, which is reflected
c)
All colors are reflected and none are absorbed
d)
All colors are absorbed except for red, which is reflected
78.
How does light travel
a)
It curves around corners
b)
Really slow
c)
In a straight line
d)
In circles
79.
Which color reflects the least light?
a)
Black
b)
White 
c)
Blue
d)
Red
80.
Sunlight is
a)
not light at all
b)
red light
c)
yellow light
d)
white light
81.
Which of the following is the best reflector of light?
a)
Lens
b)
Microscope
c)
Mirror
d)
Prism
82.
Light enters this part of the eye first.
a)
Retina
b)
Cornea
c)
Lens
d)
Cones
83.
Humans can see colors because of these photo receptor cells in the Retina called 
a)
rods
b)
optic cells
c)
cones
d)
sclera
84.
Objects that reflect ALL colors will appear _____?
a)
Black
b)
White
c)
Gray
d)
Multi-colored
85.
Objects that ABSORB all colors of light will appear _______.
a)
white
b)
black
c)
multi-colored
d)
gray
86.
If you are using a green color filter, what color will you only see?
a)
blue
b)
green
c)
white
d)
red
87.
If you are using a red color filter, blue objects will appear what color?
a)
purple
b)
blue
c)
red
d)
black
88.
Why can we sometimes see only parts of the moon?  
a)
The path of light can only reach half of the moon at a time.
b)
The path of light from Earth to the Sun is blocked.
c)
The moon is partially eaten by giant zombie rodents, but it can regrow.
d)
Our brain just wants to make things up to confuse us.
89.
Which of the following would not reflect light?
a)
Mirror
b)
Water
c)
Glasses
d)
Brick Wall
90.
Which term describes when light bounces off of a smooth surface?  
a)
Refraction
b)
Transmission
c)
Absorption
d)
Reflection

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