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Light Waves

Total questions: 36

Worksheet time: 18mins

Name
Class
Date
1.

What is transferred from place to place by waves?

a)

matter

b)

energy

c)

particles

d)

light

2.

What does the arrow in the picture represent?

a)

amplitude

b)

wavelength

c)

frequency

d)

trough

3.

What does the arrow in the picture represent?

a)

wavelength

b)

echolocation

c)

amplitude

d)

peak

4.

Waves that require a medium to travel are:

a)

mechanical waves

b)

transverse waves

c)

electromagnetic waves

d)

light waves

5.

The areas of a longitudinal waves where particles are spread far apart from each other are called:

a)

rarefactions

b)

compressions

c)

amplitude

d)

wavelength

6.

What is the speed of light in kilometers per second?

a)

1,000,000 km/s

b)

300,000 km/hour

c)

300,000 km/minute

d)

300,000 km/s

7.

The distance light can travel in one year is ______________

a)

15,000 kilometers

b)

1 light-year

c)

15 Astronomical Units

d)

6,000 miles

8.

What unit of measurement is used to calculate distance in our universe?

a)

astronomical units

b)

kilometers

c)

light years

d)

parsecs

9.

One light year is equal to:

a)

12 million million kilometres

b)

9.5 million million kilometres

c)

5.5 million million kilometres

d)

9 million kilometres

10.

What is the time taken for the light to travel between the Sun and Earth?

a)

4 minutes

b)

8 minutes

c)

12 minutes

d)

2 minutes

11.

Scientists use the light-year to describe the relationships between objects in space. What does a light-year measure?

a)

the distance that light can travel in one year

b)

the brightness of light that travels through space

c)

the number of years it takes light to travel to Earth

d)

the time it takes light to travel 1 million km

12.

Bouncing of a light ray when it strikes a reflecting surface is called.........

a)

Refraction

b)

Dispersion

c)

Reflection

d)

Diffraction

13.

Which of the following is a concave mirror?

a)
b)
c)
d)
14.

which of the following ray diagrams is correct for the ray of light incident on a concave mirror as shown in the figure 10.6?

a)

A

b)

B

c)

C

d)

D

15.

According to laws of reflection,

a)

angle of incidence > angle of reflection

b)

angle of incidence < angle of reflection

c)

angle of incidence = angle of reflection

d)

both 1 and 2

16.

The diagram shows

a)

refraction of light.

b)

absorption of light.

c)

reflection of light.

d)

scatter of light.

17.

Which is the reflected ray?

a)

A

b)

B

c)

C

d)

D

18.

Which is the reflected ray?

a)

A

b)

B

c)

C

d)

D

19.

Which is the reflected ray?

a)

A

b)

B

c)

C

d)

D

20.

Which is the reflected ray?

a)

A

b)

B

c)

C

d)

D

21.

Which is the reflected ray?

a)

A

b)

B

c)

C

d)

D

22.

Which is the reflected ray?

a)

A

b)

B

c)

C

d)

D

23.

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

24.

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

25.

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

26.

What is the object helps navy personnel in a submarine to see an object at the surface at the sea?

a)

periscope

b)

hand held mirror

c)

plane mirror

d)

dental mirror

27.

Which is the reflected ray?

a)

A

b)

B

c)

C

d)

D

28.

Which is the reflected ray?

a)

A

b)

B

c)

C

d)

D

29.

Which is the reflected ray?

a)

A

b)

B

c)

C

d)

D

30.
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
31.
Why can you see most objects? 
a)
they emit light
b)
light refracts through them
c)
light reflects off them
d)
They absorb light
32.
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
33.
Swimming pools and the ocean look shallower than they really are due to:
a)
reflection 
b)
dispersion
c)
refraction
d)
total internal reflection
34.
What is this called?
a)
refraction
b)
reflection
c)
reconstroction
d)
retraction
35.
According to the Law of reflection, a light ray striking a mirror
a)
continues moving through the mirror in the same direction
b)
moves into the mirror at a slightly different angle
c)
bounces off the mirror toward the direction it came from
d)
bounces off the mirror at the same angle it hits.
36.
The fact the two angles are the same is an example of....
a)
Refraction
b)
Angle of Incidence
c)
Law of reflection
d)
Magnification

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