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REVISION F4

Total questions: 50

Worksheet time: 50mins

Name
Class
Date
1.
Calculate the PE of a 2 kg cat perched 10 meters above the ground. 
a)
20 J
b)
200 J
c)
2.04 J
d)
200 W
2.
Calculate the work needed to raise a 3 kg cat up to a height of
4 m.
a)
12 J
b)
0 J
c)
120 J
d)
1.22 J
3.
Calculate the Kinetic Energy (KE) of a girl whose mass is 50 kg who is moving at 4 m/s.
a)
200 J
b)
800 J
c)
400 J
d)
100 J
4.
True or false: when the distance an object moves is zero the work done on the object is also zero.  
a)
True
b)
False
5.
What is the work done when a 20-N force pushes a cart 3.5 m?
a)
70J
b)
6.8J
c)
23.5J
d)
17.5J
6.
If you pull the cord, what direction will the box move?
a)
Up
b)
Down
c)
Left
d)
Right
7.
The amount of force pushing on an area is the definition of....
a)
Fluid
b)
Viscosity
c)
Barometer
d)
Pressure
8.
Which of the statements is true?
a)
The bottom of the boot exerts more pressure than the shoe as a result of an increase in surface area.
b)
The bottom of the shoe exerts more pressure than the boot as a result of an decrease in surface area.
c)
The bottom of the shoe exerts the same pressure as the bottom of the boot.
9.
What pressure does a 4000N horse exert on the ground if each foot is 10cm2?
a)
40 N/cm2
b)
100 N/cm2
c)
400 N/cm2
d)
10 N/cm2
10.
Army tank tracks are useful for travelling through the mud because..
a)
they decrease the force the vehicle exerts on the ground
b)
they increase the force the vehicle exerts on the ground
c)
they decrease the pressure the vehicle exerts on the ground
d)
they increase the pressure the vehicle exerts on the ground
11.
Which of these animals would probably cause the greatest pressure on the ground?
a)
A fat cow with big feet
b)
A fat cow with small feet
c)
 A calf with big feet
d)
A calf with small feet
12.
Where would you find the largest pressure?
a)
At the bottom of the ocean
b)
At the top of Mt Everest
c)
Close to ground on the Scotch oval
d)
In a rockpool on the Great Barrier Reef
13.
Where is pressure the greatest on the dam?
a)
D
b)
C
c)
B
d)
A
14.
Convert 10 kg to Newtons
a)
0.098 N
b)
4.5 N
c)
100 N
d)
98 N
15.
Pressure is measured in what units
a)
Newtons
b)
m/s
c)
Pascals
d)
Moles
16.
Pressure is equal to force divided by what
a)
area
b)
mass
c)
time
d)
distance
17.
True or false:
Pressure depends on depth
a)
true
b)
false
18.
The bending of light when it moves through one kind of matter to another is.....
a)
absorption
b)
reflection
c)
refraction
d)
a rainbow
19.
The bouncing of light off an object is ....
a)
a mirror
b)
absorption
c)
reflection
d)
refraction
20.
Light is a kind of.....
a)
reflection
b)
energy
c)
heat
d)
matter
21.

What does the pencil in this picture show about light?

a)

Light is refracted when it hits a curved object.

b)

Light is reflected when it hits a curved object.

c)

Light is refracted when it passes from air into water.

d)

Light is reflected when it passes from air into water.

22.
What surface best reflects light?
a)
dull
b)
shiny
c)
clear
d)
black
23.

What happens to light during total internal reflection?

a)

The angle of incidence is greater than the critical angle.

b)

The angle of reflection is the same as the critical angle.

c)

The angle of refraction is less than the critical angle.

d)

The angle of incidence is zero.

24.

Fiber optic cables work because of the principle of _____.

a)

total internal refraction

b)

incomplete internal refraction

c)

total internal reflection

d)

partial internal reflection

25.

_____ cables transmit beams of light without allowing any of the light to escape until it gets to the end of the cable.

a)

Ethernet

b)

Fiber optic

c)

Armored

d)

Coaxial

26.

When angle of incident (i) equals to critical angle (c) if light is traveled from a denser medium to a less dense medium,

a)

total internal reflection occurs.

b)

angle of refraction is equal to 90 degree.

c)

light is refracted out

d)

light travel in straight line

27.

Which of the following statement about optical fibre is incorrect?

a)

Light is totally internally reflected down the fibre.

b)

It is used in medical (endoscope).

c)

It is used in fibre optic communication.

d)

Angle of incidence of light in optical fibre must less than critical angle.

28.

The above image is an example of a ____________. They happen because cool and hot air have a different ___________________________.

a)

Mirage; angle of incidence

b)

Optical fibre; refractive index

c)

Lateral inversion; angle of reflection

d)

Mirage; refractive index

29.

Refraction happens because light travels _____________ in glass or water compared to air

a)

Faster

b)

The same

c)

At the speed of sound

d)

Slower

30.

A convex lens produces a _______ image whereas a concave lens produces a _______ image

a)

Virtual, real

b)

Virtual; diffused

c)

Real; refracted

d)

Real; virtual

31.

An example of total internal reflection is

a)

Diamond

b)

Looking down at someone in a swimming pool

c)

A camera inserted in a person's body during surgery

d)

The 'pool' of water seen when looking into the distance on a hot day

32.

The above lens is a type of ___.

a)

diverging lens

b)

converging lens

c)

divergent lens

d)

convergent lens

33.

Which lens represents the path light takes through a diverging lens?

a)
b)
c)
d)
34.

Which figure represents the path light takes through a converging lens?

a)
b)
c)
d)
35.

What type of lens is used in the shown instrument?

a)

concave lens

b)

convex lens

c)

reflection lens

d)

reduction lens

36.
Waves move ___ through vibrations
a)
Energy
b)
Matter
c)
Mass
d)
Weight
37.
Longitudinal waves are ______.
a)
Parallel
b)
Perpendicular
c)
Crazy
38.
Transverse waves are ___.
a)
Parallel
b)
Perpendicular
c)
Weird
39.
Which is the wavelength?
a)
1
b)
2
c)
3
d)
4
40.
If the frequency gets higher, the wavelength gets 
a)
longer
b)
shorter
41.
If the wavelength gets longer, the frequency gets 
a)
higher
b)
lower
42.
The pitch of the sound depends on
a)
frequency
b)
amplitude
c)
wavelength
43.
The loudness of the sound depends on
a)
wavelength
b)
amplitude
c)
frequency
44.
Which electromagnetic wave is responsible for cell phones?
a)
gamma
b)
xray
c)
microwaves
d)
radio
45.
Which EM wave is used to treat cancer?
a)
gamma
b)
radio
c)
xray
d)
infrared
46.
Which EM wave has the lowest frequency?
a)
radio
b)
xray
c)
gamma
d)
infrared
47.
What property of the wave is represented by the letter "B"?
a)
amplitude
b)
crest
c)
trough
d)
wavelength
48.
Which is the correct equation for calculating the speed of a wave?
a)
T = 1/f
b)
Speed= Wavelength x Period
c)
Speed = Wavelength/Frequency
d)
Speed= Wavelength x Frequency
49.
1.  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
50.
What type of wave is this?
a)
Longitudinal
b)
Transverse

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