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LONG TEST LIGHT

Total questions: 25

Worksheet time: 14mins

Name
Class
Date
1.

When we stand in front of our dressing table, our left hand seems to be right and right seems to be left. This is called

a)

mirage

b)

Up -side down phenomenon

c)

Left-right confusion

d)

left -right inversion

2.

Which of the following is not a source of light?

a)

mirror

b)

fireworks

c)

burning candle

d)

lightning

3.

Light travels in . . . line from its source in all directions.

a)

an oval

b)

a circle

c)

a variety

d)

a straight

4.

The word that will help you to remember the order of the colors is . .

a)

ROGYBOY

b)

ROYGBIV

c)

ROGBIV

d)

ROBIVGE

5.

Why does an apple appear red?

a)

All colours are absorbed & none are reflected

b)

All colours are absorbed except for blue, which is reflected

c)

All colours are reflected and none are absorbed

d)

All colours are absorbed except for red, which is reflected

6.

Which of the following is the best reflector of light?

a)

Glass block

b)

Water

c)

Mirror

d)

Prism

7.

Objects that reflect ALL colours will appear _____?

a)

Black

b)

White

c)

Gray

d)

Multi-coloured

8.
Which term describes when light bounces off of a smooth surface?  
a)
Refraction
b)
Transmission
c)
Absorption
d)
Reflection
9.
White light is made up of _________________ colors.
a)
10
b)
3
c)
7
d)
70
10.
Define REFLECTION
a)
When light bounces off something smooth at the same angle it hits the object
b)
When light bends as it passes through an object
c)
When light bounces off a rough surface at the same angle it hits the object
d)
When light bends
11.

Why can you see most objects?

a)

they emit light

b)

light refracts through them

c)

light reflects them

d)

They absorb light

12.

An image that you can see , but does not really exist is called which of the following

a)

Real Image

b)

Fake Image

c)

Virtual Image

d)

Digital Image

13.
Light with a shorter wavelength has ___
a)
less energy
b)
more energy
c)
a smaller velocity
d)
a greater velocity
14.
Light with a wavelength that the human eye can detect is called ___
a)
visible light
b)
ultraviolet light'
c)
infrared light
d)
invisible light
15.
Light waves with the shortest wavelengths of all are called ___
a)
ultraviolet light
b)
microwaves
c)
x-rays
d)
gamma rays
16.
Light with the longest wavelengths of all are called ___
a)
gamma rays
b)
x-rays
c)
microwaves
d)
radio waves
17.

Which of the following is a source of light

a)

Eye

b)

Mirror

c)

Fire

d)

the moon

18.

Example of a luminous object

a)

Sun

b)

Moon

c)

Pencil

d)

Wall

19.
If the wavelength of an electromagnetic wave is longer, what is true about the energy? 
a)
Energy is higher.
b)
Energy is lower. 
c)
Energy is not dependent on wavelength. 
20.
Nuclear weapons are examples of __________. 
a)
x-rays
b)
ultraviolet rays
c)
gamma rays
d)
infrared rays
21.

What happens when light falls on an opaque object?

a)

the light moves arround the object

b)

all the light is blocked and a shadow is formed

c)

all the light passes through the object

d)

some of the light passes through the object

22.

The material allows light to pass through it easily. It is the meaning of . . . material

a)

transparent

b)

translucent

c)

opaque

d)

solid

23.

The three primary colours of light are

a)

Red, Blue, Yellow

b)

Cyan, Magenta, Yellow

c)

Cyan, Green, Red

d)

Blue, Green, Red

24.

Which colour absorbs the most light?

a)

Black

b)

White

c)

Blue

d)

Red

25.

What two colours make yellow?

a)

Red and White

b)

Red and Blue

c)

Red and Green

d)

Green and Blue