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Yr9 waves

Total questions: 145

Worksheet time: 3hrs 28mins

Name
Class
Date
1.
The number of wavelengths that pass a point each second
a)
frequency
b)
wavelength
c)
pitch
d)
amplitude
2.
Material (matter) through which a wave travels
a)
medium
b)
Doppler Effect
c)
sound
d)
pitch
3.
A wave in which the vibration is in the same direction as that in which the wave is traveling; sound waves
a)
longitudinal wave
b)
ocean wave
c)
transverse wave
d)
mechanical wave
4.
The part of a longitudinal wave where the particles of the medium are close together.
a)
rarefaction
b)
compression
c)
crest
d)
trough
5.
A part in a longitudinal wave where the particles are spread apart
a)
compression
b)
rarefaction
c)
crest
d)
trough
6.
A reflected sound wave
a)
frequency
b)
pitch
c)
echo
d)
rarefaction
7.

What type of energy does a sound wave have?

a)

Mechanical

b)

Radiant

c)

Electrical

d)

Sound

8.

Sound is produced by -----

a)

Heat energy

b)

Low temperatures

c)

Vibrations

d)

Friction

9.

True or False: Sound needs a medium.

a)

True

b)

False

10.

Sound waves are also known as ----- waves.

a)

Compression

b)

Longitudinal

c)

Neither

d)

Both longitudinal and compression

11.

True or False: Sound waves are faster than light.

a)

False

b)

True

12.

Areas of increased pressure on a sound wave are known as a ----

a)

Rarefaction

b)

Compression

c)

Frequency

d)

Amplitude

13.

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

14.

Spread out areas or areas of decreased pressure on a sound wave are known as a ---

a)

Rarefaction

b)

Amplitude

c)

Compression

d)

Hertz

15.

The unit for measuring frequency is the ---

a)

Joule

b)

Hertz

c)

Gram

d)

Newton

16.

The measure of the amount of energy in a wave is ----

a)

Wavelength

b)

Hertz

c)

Frequency

d)

Amplitude

17.

The speed of sound depends on these two things:

a)

The type of medium and the temperature of the medium

b)

Speed of the medium and temperature of the medium

c)

Temperature of the medium and sound of the medium

d)

None of the above

18.

Sound waves travel the fastest through ---

a)

Liquids

b)

Gases

c)

Solids

19.

Sound waves that are beyond the range of human ear are known as ----

a)

Infrasonic waves

b)

Ultrasonic waves

20.

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

a)

Refraction

b)

Reflection

21.
Why is sound able to travel faster through a solid than a gas?
a)
Gas molecules are packed tightly.
b)
Sound does not travel faster through a solid than a gas.
c)
Solid molecules are packed tightly.
d)
Gas molecules move slowly.
22.

Sound cannot travel in a vacuum.

a)

true

b)

false

23.

Loudness of sound is determined by the __________________ of the sound waves.

a)

amplitude

b)

frequency

24.

Tuning forks are used

a)

eat food

b)

show how vibrations produce sound

25.

Sound waves can reflect off objects.

a)

true

b)

false

26.

Scientists use reflected sounds waves to locate objects underwater, using ________________.

a)

sonar

b)

radar

27.

The ________________ is the organ in that converts mechanical sound vibrations into nerve signals.

a)

cochlea

b)

pinna

28.

Human ears are designed to hear in ________________.

a)

air

b)

water

29.

A student ties two strings of the same lengths and thicknesses between two stands, as shown. When the student plucks the strings, string 2 produces sound with a pitch higher than string 1. What explains the differences in pitch?

a)

A slack string vibrates slower, producing a lower volume sound.

b)

Increasing tension in the string makes it vibrate faster, producing a higher pitch sound.

c)

A firm string spreads vibrations faster throughout the string, producing a lower pitch.

d)

Decreasing tension in the string spreads vibrations slower, increasing the loudness.

30.

Two students make a device to talk from one end of a hallway to the other. When one student speaks into one can, the other student listens by keeping the other can on an ear. What design modification would help the students transfer louder, clearer sounds?

a)

Loosen the string

b)

Twist hte string

c)

Keep the string tight

d)

Swing the string while talking

31.

A student wants to conduct an experiment to study how tension affects the pitch of sound. The student makes a large opening on the top of a cardboard show box, as shown.

The student needs to attach materials across the opening in the box to produce sounds with different pitches. What is the BEST material to use?

a)

Cotton threads

b)

Paper Strips

c)

Plastic straws

d)

Rubber bands

32.

Which statement about sound is TRUE?

a)

Sound cannot move through water.

b)

Sound can travel through empty space.

c)

Sound moves better through some materials than others.

d)

Sound cannot move from one material to another.

33.
___ is when light travels through a material and bends.
a)
Diffraction
b)
Dispersion
c)
Mirage
d)
Refraction
34.
The point where the rays meet is known as....
a)
Fire
b)
the focal point
c)
refraction
d)
Plane of the lens
35.
Which describes a convex lens?
a)
triangular in shape
b)
more transparent in the middle
c)
thicker on the edges than in the middle
d)
thicker in the middle than on the edges
36.
Is a convex lens thicker or thinner in the middle?
a)
Thicker 
b)
Thinner 
37.
Is a concave lens thicker or thinner in the middle? 
a)
Thicker 
b)
Thinner 
38.

When light waves move from passing through air to passing through a glass lens when happens to them?

a)

They slow down and change direction

b)

They speed up and change direction

c)

They maintain the same speed and change direction

d)

They maintain their same speed and direction

39.
This diagram best represents 
a)
reflection
b)
refraction
c)
absorption
d)
diffusion
40.
How does light travel
a)
It curves around corners
b)
Really slow
c)
In a straight line
d)
In circles
41.

How does a concave lens differ from a convex lens?

a)

A convex lens is another way to describe a plane mirror; a concave lens is curved

b)

A concave lens is curved inward on both sides; a convex lens is on only one side

c)

A convex lens has a thick center and thin edges, a concave lens has a thin center and thicker edges

d)

A convex lens has a thin center and thick edges. a concave lens has a thick center and thinner edges

42.

A concave lens has an inward curved shape. It refracts light outward from the lens. They light rays spread apart as they exit the lens. Which represents a concave lens?

a)

A

b)

B

c)

A and B

d)

neither A or B

43.
What does the word "diverging" mean?
a)
to spread apart
b)
to come together
c)
parallel
d)
perpendicular
44.
What does the word "converging" mean?
a)
to separate
b)
to come together
c)
parallel 
d)
perpendicular
45.
A converging lens is also known as a ____ lens.
a)
convex
b)
concave
c)
double
d)
refracted
46.

What type of lens do you have in your eye?

a)

Concave

b)

Prismatic

c)

Objective

d)

Convex

47.
This image is.....
a)
inverted and smaller
b)
inverted and larger
c)
not inverted and smaller
d)
not inverted and larger
48.
This image is...
a)
Inverted and smaller
b)
inverted and bigger
c)
not inverted and smaller
d)
not inverted and bigger
49.
a real image...
a)
is produced by virtual rays and can be projected on a screen
b)
is produced by real rays and cannot be projected on a screen
c)
is produced by virtual images and cannot be projected on a screen
d)
is produced by real rays and can be projected on a screen
50.
What type of lens do humans have in their eyes? 
a)
Concave Lens 
b)
Convex Lens 
51.

An image behind the mirror is...

a)

virtual

b)

real

c)

inverted

d)

upright

52.

This ray diagram is for which mirror?

a)

concave

b)

convex

c)

plane

d)

window

53.

In the image, all the rays meet at F, What is F

a)

focal length

b)

focal point

c)

center of curvature

d)

reflection

54.

This image is showing a convex mirror because the image is (choose 2 answers)

a)

real light rays meet behind the mirror

b)

real light rays don't meet

c)

the focal point is in front of the mirror

d)

the focal point is behind the mirror

55.

A dentist uses a small dental mirror to help magnify teeth in your mouth. What type of mirror is this?

a)

a convex mirror

b)

a concave mirror

c)

a convex lens

d)

a concave lens

56.

The side view mirrors on your car help shrink the image on both sides of the car, allowing you to see a larger field of view. What type of mirror is this?

a)

a convex mirror

b)

a concave mirror

c)

a convex lens

d)

a concave lens

57.
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
58.
The bouncing off of light rays from the surface of an object such as a mirror or other shiny surface is called:
a)
mirror
b)
laser
c)
reflection
d)
refraction
59.
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
60.
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
61.
MCQ 02
Why can you see most objects?
a)
A. they emit light
b)
B. light refracts through them
c)
C. light reflects off them
d)
D. they absorb light
62.
Section B1a
Given that the angle of incidence = 30 degrees
a. Draw a ray diagram, labelling clearly the normal, incident ray, angle of incidence, reflected ray and angle of reflection accurately.
Which is the correct diagam? 
a)
A
b)
B
c)
C
d)
D
63.

Which is NOT a source of light?

a)

sun

b)

lightbulb

c)

fire

d)

car

64.

Your light-sensing organ is your

a)

ear

b)

finger

c)

brain

d)

eye

65.

In order to see a picture it must

a)

produce light

b)

reflect light

c)

absorb light

66.

To get the best reflection from a mirror you need

a)

a very shiny surface to reflect lots of light

b)

to stand right in front of it

c)

to shine a bright light on it

d)

it to produce light

67.
MCQ 011
According to the laws of reflection, if i = angle of incidence and r = angle of reflection,
a)
A. i =  r
b)
B. i >  r
c)
C. r >  i
d)
D. i is not equal to r
68.
MCQ 08
If a capital letter R is seen in an ordinary mirror, what does it look like?
a)
A
b)
B
c)
C
d)
D
69.
Which of the following is not a source of light? 
a)
A. candle
b)
B. caver’s lamp
c)
C. mirror
d)
D. sun
70.
Law of reflection state that - The angle of incidence is .................. to the angle of reflection.
a)
equal
b)
double
c)
half
71.
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.
72.

In the diagram, which letter represents the angle of incidence?

a)

A

b)

B

c)

C

d)

D

73.

Which diagram represents specular reflection?

a)

A

b)

B

74.
Law of reflection state that - The angle of incidence is .................. to the angle of reflection.
a)
equal
b)
double
c)
half
75.
........... – 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
76.
The imaginary line perpendicular to a reflecting surface is called _____.
a)
crooked line
b)
parallel line
c)
angular line
d)
normal line
77.

What is the best explanation for Mickey seeing himself in the mirror?

a)

refraction

b)

absorbed

c)

reflection

d)

flipped

78.
MCQ 020
Which diagram shows the correct image of the key in a plane mirror?
a)
A
b)
B
c)
C
d)
D
79.

The word SONAR is derived from

(a)  

80.

The reflected signal is known as

(a)  

81.

The distance of the sea can be calculated using the formula


a)

 d=v2d=\frac{v}{2}  

b)

 d=v×l4d=\frac{v\times l}{4}  

c)

 d=v×t2d=\frac{v\times t}{2}  

d)

 d=v×t4d=\frac{v\times t}{4}  

82.

What is SONAR used for?

a)

mapping the ocean floor and detecting objects in the ocean

b)

some animals use it to find food in the dark

c)

communication between sea mammals

d)

finding missiles in the sky

83.
 A wave has frequency of 50 Hz and a wavelength of 10 m. What is the speed of the wave?
a)
500 m/s
b)
50 m/s
c)
5 m/s
d)
0.5 m/s
84.
A wave has wavelength of 10 m and a speed of 340 m/s. What is the frequency of the wave?
a)
34 m/s
b)
3400 Hz
c)
3400 m/s
d)
34 Hz
85.
Which wave in the diagram has the greatest frequency?
a)
1
b)
2
c)
3
d)
4
86.
 A wave has frequency of 5 Hz and a speed of 25 m/s. What is the wavelength of the wave?
a)
25 m
b)
125 m
c)
5 m
d)
25 m/s
87.

A guitar string vibrates with a frequency of 320 hz. If the wavelength of the vibration is 0.23 meters what is the speed of the wave?

a)

320.23 m/s

b)

1391.3 hz

c)

73.6 m/hz

d)

73.6 m/s

88.
What is the speed of a 20 Hz with a 4m wavelength?
a)
0.2 m/s
b)
5 m/s
c)
80 m/s
d)
320 m/s
89.
What is the frequency of a wave traveling at 300 m/s with a 4 m wavelength?
a)
0.013 Hz
b)
75 Hz
c)
300 Hz
d)
1200 Hz
90.
Which has the longest wavelength?
a)
A
b)
B
c)
C
d)
D
91.
Velocity= ________
Wavelength= .5m
Frequency= 150 hertz
a)
.75 m/s
b)
75 m/s
c)
300 m/s
92.
Velocity= 600 m/s
Wavelength= 2.0m
Frequency= _________
a)
300 hertz
b)
.0033 hertz
c)
3000 hertz
93.

Sound is an example of what type of wave?

a)

Transverse

b)

Longitudinal

94.

The speed of a wave is 74m/s. If the wavelength is 12m, what is the frequency?

a)

6.2 Hz

b)

16.2 Hz

c)

888 Hz

d)

0.16 Hz

95.

The frequency of a wave is 3.3 Hz. If the wavelength is 7.4 m, how fast is the wave moving?

a)

2.24 m/s

b)

24.4 m/s

c)

0.45 m/s

d)

0.24 m/s

96.

What are the spaced out sections of this wave called?

a)

Reflections

b)

Rarefactions

c)

Wavelength

d)

Compressions

97.

The lowest part of the wave is called the ?

a)

Frequency

b)

Amplitude

c)

crest

d)

trough

98.
What is wavelength a measure of?
a)
height of a wave
b)
speed of a wave
c)
temperature of a wave
d)
distance between two points on a wave
99.
What is the amplitude of a wave related to?
a)
velocity
b)
speed
c)
mass
d)
height
100.
In the wave equation (λ) represents what?
a)
amplitude
b)
wavelength
c)
frequency
d)
wave speed
101.
The highest point of a wave is called the
a)
rest position
b)
crest
c)
trough
d)
peak
102.
If a wave is traveling at a certain speed and its frequency is doubled, what happens to is wavelength?
a)
the wavelength doubles
b)
the wavelength is halved
c)
the wavelength is stopped
d)
the wavelength remains the same
103.
The lowest part of the wave is?
a)
trough
b)
crest
c)
point of origin
d)
compression point
104.
What is the measure of how many waves pass a point in a certain amount of time?
a)
frequency
b)
wavelength
c)
midpoint
d)
crest and trough
105.
Which wave has a greater frequency?
a)
A
b)
B
106.
Which wave in the diagram has the greatest wavelength?
a)
1
b)
2
c)
3
d)
4
107.
Which vocabulary term is used to identify the distance between points C & G?
a)
Amplitude
b)
Crest
c)
Frequency
d)
Wavelength
108.
Light is a form of 
a)
energy
b)
radiation
c)
reflection
109.

What does reflection mean?

a)

Soaks up light

b)

Passes through

c)

light bounces off

110.
Does the frog reflect or absorb green?
a)
Reflect
b)
Absorb
111.
Which type of electromagnetic radiation has the shortest wavelength?
a)
Radio Waves
b)
Visible Light
c)
Microwaves
d)
Gamma Rays
112.
Which type of visible light has the highest energy?
a)
Red
b)
Yellow
c)
Green
d)
Violet
113.
Which type of radiation has a frequency closest to 105?
a)
Radio
b)
Infrared
c)
Ultraviolet
d)
X-Ray
114.
Which type of electromagnetic radiation has a wavelength near 10-8?
a)
Microwave
b)
Infrared
c)
Visible
d)
Ultraviolet
115.
Which of the following types of radiation has the shortest wavelength and the highest frequency?
a)
Radio Waves
b)
Infrared
c)
Visible
d)
X-Rays
116.
Which of the following types of electromagnetic radiation has a wavelength near 10-5?
a)
Radio
b)
Microwave
c)
Infrared
d)
Visible 
117.
Cell phones and televisions use this type of EM wave.  It has the longest wavelength with the lowest frequency.
a)
radio wave
b)
tv wave
c)
Gamma wave
d)
ultra violet
118.
Which part of the electromagnetic spectrum has high enough energy to cause damage to eyes and skin, and sometimes even cancer? 
a)
infrared light
b)
visible light
c)
ultraviolet light
d)
microwaves
119.
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. 
d)
energy is cancelled out
120.
Which of the following electromagnetic waves is given off as heat? 
a)
ultraviolet light
b)
x-rays
c)
gamma rays
d)
infrared rays
121.
A wave with a large wavelength will have a ______ frequency and _____ energy
a)
high, low
b)
high, high
c)
low, high
d)
low, low
122.
These are the waves that are used to penetrate solids and are used to create medical images.
a)
visible light
b)
gamma rays
c)
x rays
d)
microwaves
123.
The distance between one point of a wave to the same point on the next wave.
a)
frequency
b)
wavelength
c)
amplitude
d)
crest
124.
Waves that require a medium to travel through.
a)
electromagnetic
b)
mechanical
125.

The type of waves shown here is a ___________ wave

a)

EM

b)

Light

c)

Sound

d)

Water

126.

The type of waves shown here is a(n) ___________ wave

a)

EM

b)

Temporal (time)

c)

Transverse

d)

Longitudinal

127.

Gamma rays are part of the EM spectrum, they are commonly used for?

a)

Artificial tanning in a tanning salon

b)

Communicating between mobile phones

c)

Destroying cancer cells in cancer tumors

d)

As an aid for restful sleep

128.

X-rays are part of the EM spectrum, they are commonly used for?

a)

Artificial tanning in a tanning salon

b)

Communicating between mobile phones

c)

Detecting broken bones

d)

As an aid for restful sleep

129.

UV rays are part of the EM spectrum, they are commonly used for?

a)

Artificial tanning in a tanning salon

b)

Communicating between mobile phones

c)

Detecting broken bones

d)

As an aid for restful sleep

130.

Visible light part of the EM spectrum, it is commonly used for?

a)

Artificial tanning in a tanning salon

b)

Communicating between mobile phones

c)

Detecting broken bones

d)

As an aid for reading at night

131.

IR rays are part of the EM spectrum, they are commonly used for?

a)

Artificial tanning in a tanning salon

b)

Remote control devices at home

c)

Extinguishing forest fires

d)

As an aid for restful sleep

132.

Microwave radiation is part of the EM spectrum, it is commonly used for?

a)

Heating convenience foods at home

b)

Remote control devices at home

c)

Extinguishing forest fires

d)

Freezing foods for longer life

133.

Radio waves are part of the EM spectrum, they are commonly used for?

a)

The sound we hear in the car

b)

Finding lost dogs

c)

Cooking roast in the oven

d)

Listening to music on an old fashioned radio receiver

134.

Tanning salons are considered dangerous, because they can sometimes cause?

a)

Skin cancer from the UV they use

b)

A horrible rash on your feet

c)

Overheating from the microwaves they use

d)

Distortion in the music you are listening to

135.

The type of EM radiation used in a tanning salon is?

a)

UV

b)

X-rays

c)

Gamma

d)

Visible

136.

Ultra violet (UV) radiation is dangerous because it can cause?

a)

Skin cancer

b)

Headaches

c)

Sore toes

d)

Blindness in worms

137.

IR rays are part of the EM spectrum, they are more commonly called?

a)

Gamma

b)

Heat

c)

Cold

d)

Clouds

138.

Which parts of the EM spectrum would be used to cook the Sunday roast.

a)

Gamma

b)

Infra red (IR)

c)

Ultra violet (UV)

d)

Visible light like the rainbow

139.

Sound waves and light waves are similar because?

a)

They both transfer matter without transferring energy

b)

The particles vibrate in the same direction

c)

Both need a medium to travel

d)

They both transfer energy without transferring matter

140.

Longitudinal waves and transverse waves are similar because?

a)

They both transfer matter without transferring energy

b)

The particles vibrate in the same direction

c)

Both need a medium to travel

d)

They both transfer energy without transferring matter

141.

Longitudinal waves and transverse waves are different because?

a)

A candle can only be seen at night

b)

The particles vibrate in different directions

c)

Transverse waves do not require a medium to travel

d)

They both transfer energy without transferring matter

142.

Which of the following is TRUE for sound waves?

a)

Sound waves cannot travel through space

b)

Sound waves travel much slower than light waves

c)

Sound waves do not require a medium to travel

d)

None of these are true

143.

Which of the following is TRUE for longitudinal waves?

a)

Longitudinal waves cannot travel through space

b)

Longitudinal waves travel much slower than light waves

c)

Longitudinal waves do not require a medium to travel

d)

None of these are true

144.

Which of the following is TRUE for light waves?

a)

Light is an example of a transverse wave

b)

Light waves travel much slower than sound waves

c)

Light waves do not require a medium to travel

d)

All of these are true

145.

Which of the following is TRUE for transverse waves?

a)

Light and water are examples of transverse waves

b)

The particles move perpendicular to the motion of the wave

c)

Sound is not a transverse wave

d)

All of these are true

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