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SCIENCE QUIZ 4 |LIGHT | YEAR 4

Total questions: 30

Worksheet time: 15mins

Name
Class
Date
1.
What is light?
a)
clear or easy to see through
b)
to put forth or send out
c)
a type of energy that makes things visible
d)
a transparent crystal used to separatelight
2.
What does it mean to refract?
a)
to bend something, almost always light
b)
clear or easy to see through
c)
a polished surface which reflects an image
d)
allowing light but not detail to pass through
3.
What does it mean to be opaque?
a)
to put forth or send out
b)
to take in without motion
c)
unable to see through
d)
transparent material for focusing light
4.
What does it mean to reflect?
a)
a polished surface which reflects an image
b)
a transparent crystal used to separate light
c)
to form or reproduce an image by mirroring  it
d)
to bend something, almost always light
5.
What does it mean to be translucent?
a)
curving or arched inward
b)
to put forth or send out
c)
allowing light but not detail to pass through
d)
to bend something, almost always light
6.
What is a shadow?
a)
to form or reproduce an image by mirroring it
b)
transparent material for focusing light
c)
a type of energy that makes things visible
d)
a dark unlit shape caused by blocked light
7.
What does it mean to be transparent?
a)
a dark unlit shape caused by blocked light
b)
to take in without motion
c)
the tone or color of the skin
d)
clear or easy to see through
8.
the bending of light when it passes though a medium, such as water or a prism
a)
reflection
b)
refraction
c)
absorbtion
d)
medium
9.
not allowing any light to pass through
a)
transparent
b)
opaque
c)
translucent
d)
clear
10.
allows some light to pass through
a)
opaque
b)
translucent
c)
clear
d)
transparent
11.
allows all light to pass through
a)
transparent
b)
translucent
c)
opaque
12.

How does the light travels?

a)

in parallel

b)

in a straight line

c)

on its own orbit

d)

on its own path

13.

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

14.

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

a)
b)
c)
d)
15.

What is the factor that affects the clarity of a shadow?

a)

Type of the light source

b)

Size of light source

c)

Size of screen

d)

Type of material of the object

16.

In an experiment, the shadow was formed but not so clear. Which type of object do you think was used in this experiment?

a)

Coloured paper

b)

Manila card

c)

Wooden block

d)

A transparent plastic

17.

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

18.

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

19.

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

20.

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

21.

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

22.

Light travels in (a)   lines

23.

When light travels through water it changes its direction. This is called (a)  

24.
an image made by light bouncing off a surface, such as a mirror or metal spoon
a)
refraction
b)
reflection
c)
absorbtion
d)
medium
25.
the bending of light when it passes though a medium, such as water or a prism
a)
reflection
b)
refraction
c)
absorbtion
d)
medium
26.
Smooth surfaces _______ a lot of light.
a)
reflect
b)
bend
c)
absorb
d)
twist
27.
What does light do when it hits an object that it cannot pass through?
a)
It creates a shadow
b)
It passes through anyway
28.

Which object allows you to see your reflection?

a)

rock

b)

mirror

c)

paper

29.

this image is an example of...

a)

reflection

b)

refraction

30.

reflection or refraction?

a)

reflection

b)

refraction