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Understanding Waves and reflection of waves

Total questions: 45

Worksheet time: 1hrs 18mins

Name
Class
Date
1.
What happens when light hits a mirror?
a)
it makes a color
b)
it reflects
c)
it makes a rainbow
d)
it passes through
2.
What does it mean to reflect?
a)
bounce off
b)
bend
c)
refract
d)
energy
3.
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.
4.
Which is the angle of incident?
a)
Angle 1
b)
Angle 2
5.
The fact the two angles are the same is an example of....
a)
Refraction
b)
Angle of Incidence
c)
Law of reflection
d)
Magnification
6.
The imaginary line perpendicular to a reflecting surface is called _____.
a)
crooked line
b)
parallel line
c)
angular line
d)
normal line
7.
The angle produced as a source of light bounces off a reflecting surface is called ______.
a)
angle of crookedness
b)
angle of reflection
c)
angle of incidence
d)
angle of bounce
8.
What is the line MN called in the given diagram
                               
a)
incident ray
b)
reflected ray
c)
reflecting surface
d)
normal
9.
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
10.
what is the angle between the reflected ray and the normal called as
a)
angle of incidence
b)
angle of reflection
c)
angle of convergent
d)
angle of divergent
11.
If the angle of incidence is 45 degree, what is the angle between the incident ray and reflecting surface
a)
45
b)
90
c)
180
d)
none of the above
12.
What is A?
a)
Angle of incidence
b)
Angle of reflection
c)
Incident ray
d)
Reflected ray
13.
Law of reflection state that - The angle of incidence is .................. to the angle of reflection.
a)
equal
b)
double
c)
half
14.
........... – the angle between the normal and the reflected ray.
a)
Angle of incidence
b)
Angle of reflection
c)
Angle of coincidence
d)
Angle of direction
15.
What is reflection?
a)
Reflection is the bouncing  of light off the surface that it strikes on.
b)
Reflection is the absorbing of light off the surface that it strikes on.
c)
Reflection is the bending of light off the surface that it strikes on.
d)
Reflection is the scattering of light off the surface that it strikes on.
16.
Which of these statements is true?
a)
Light travels in straight lines.
b)
Light is stopped when it meets a solid object.
c)
Light does not travel in straight lines.
d)
Light will only travel for about 2000km before it stops.
17.

A Transverse Wave is a wave that goes up and down

a)

True

b)

False

18.

Calculate the angle of Reflection

a)

54

b)

34

c)

44

d)

64

19.

Which characteristic of waves will be changed after reflection?

a)

wavelength

b)

frequency

c)

direction

d)

wavespeed

20.

The diagram shows a single ray of light being directed at a plane mirror. What is the angle of reflection?

a)

35o

b)

55o

c)

45o

d)

90o

21.

Diagram shows a sound wave reflected from a barrier. Comparing with the incident wave, the reflected wave has

a)

same velocity

b)

same frequency

c)

bigger amplitude

d)

shorter wavelength

22.

Echo is a phenomenon caused by

a)

refraction of sound waves

b)

reflection of soundwaves

c)

diffraction of sound waves

d)

polarization of sound waves

23.

The figure shows a set of a plane waves arriving at a plane reflector placed in a ripple tank. Which of the following will change?

a)

wavelength

b)

wave direction

c)

frequency

d)

wave speed

24.
Why can you see most objects? 
a)
they emit light
b)
light refracts through them
c)
light reflects off them
d)
They absorb light
25.
What does incidence angle equal?
a)
reflection angle
b)
∠C
c)
∠D
d)
all of these
26.
Law of reflection state that - The angle of incidence is .................. to the angle of reflection.
a)
equal
b)
double
c)
half
27.
........... – the angle between the normal and the reflected ray.
a)
Angle of incidence
b)
Angle of reflection
c)
Angle of coincidence
d)
Angle of direction
28.
The illustration shows a light ray striking an object.
In the illustration, the light ray striking the object is-
a)
absorbed
b)
stopped
c)
reflected
d)
refracted
29.

A Transverse Wave is a wave that goes up and down

a)

True

b)

False

30.

What is the lowest part of a transverse wave?

a)

Trough

b)

Crest

31.

Why do we see grass as green?

a)

Green light is absorbed

b)

Green light is reflected

32.

Calculate the angle of Reflection

a)

54

b)

34

c)

44

d)

64

33.

Calculate the angle of Incidence

a)

54

b)

34

c)

44

d)

64

34.
What occurs when vibrations traveling through an object match the object’s natural frequency?
a)
Refraction
b)
Reflection
c)
Diffraction
d)
Resonance
35.
The speed of a wave is its wavelength multiplied by its
a)
Vibration
b)
Frequency
c)
Amplitude
d)
Reflection
36.

What color is an object that absorbs all the colors in the light spectrum?

a)

A rainbow

b)

White

c)

Black

d)

Invisible

37.

What happens when light hits a shiny or smooth surface?

a)

It disappears.

b)

It is refracted.

c)

It is absorbed.

d)

It is reflected.

38.

What is the angle of incidence?

a)

The angle at which light bends in water.

b)

The angle at which light hits a surface.

c)

The angle at which light is absorbed by an object.

d)

The angle at which light bounces off a surface.

39.
A wave carries...?
a)
energy only
b)
matter only
c)
the matter carries the energy
d)
neither
40.

Sound is produced by -----

a)

Heat energy

b)

Low temperatures

c)

Vibrations

d)

Friction

41.

True or False: Sound needs a medium.

a)

True

b)

False

42.

True or False: Sound waves are faster than light.

a)

False

b)

True

43.

The distance from the beginning of one compression to the beginning of the next compression is called a -----

a)

Rarefaction

b)

Frequency

c)

Wavelength

d)

Compression

44.

The Tacoma Narrows Bridge, musical instruments, and crystal stemware are examples of -----

a)

Frequency

b)

Resonance

c)

Interference

d)

Speed

45.

Sonar and echolocation use ----- to detect objects under water.

a)

Refraction

b)

Reflection