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4th Physics - Year to Date Mixed Quiz

Total questions: 197

Worksheet time: 4hrs 38mins

Name
Class
Date
1.
A series circuit has ____ path(s) that the electric current can take. 
a)
One
b)
Two 
c)
Three 
d)
Four
2.
In a parallel circuit, if one connection is broken, all of the connections stop working.
a)
True
b)
False
3.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
4.

What needs to be done to this circuit so that the lamp lights up?

a)

Close the switch

b)

Add another lamp

c)

Add a cell and close the switch

5.

Which switch or switches must be closed to make the lamps light?

a)

Only switch 1

b)

Only switch 2

c)

Switches 1 and 2

6.

What component does this circuit symbol represent?

a)

Voltmeter

b)

Cell

c)

Resistor

7.

If lamp 1 is unscrewed from its holder, what will happen to lamp 2?

a)

It will get brighter

b)

It will go out

c)

It will stay the same brightness

8.

If lamp 1 is unscrewed from its holder, what will happen to lamp 2?

a)

It will stay lit

b)

It will go out

c)

It will get dimmer

9.

What is wrong with this circuit diagram?

a)

There is only one cell

b)

The ammeter should be connected in series

c)

A ammeter should be connected in parallel

10.

Which ammeter will have the biggest reading?

a)

Ammeter 1

b)

Ammeter 2

c)

They will read the same

11.

Which one is a parallel circuit?

a)
b)
c)
d)
12.

What happens to the current in a parallel circuit?

a)

The current stays the same

b)

The current is added

c)

The current is reduced

d)

The current is split between the light bulbs

13.

What happens to the voltage in a series circuit?

a)

The voltage stays the same

b)

The voltage is added

c)

The voltage is reduced

d)

The voltage is split between the light bulbs

14.

What is the definition of current?

a)

The rate of flow of charge

b)

A measure of the difference in energy

c)

How difficult it is for electrons to flow

15.

What happens to the voltage in a parallel circuit?

a)

The voltage stays the same in each branch

b)

The voltage is added

c)

The voltage is reduced

d)

The voltage is split between the light bulbs

16.

Which term can be used instead of voltage?

a)

Resistance

b)

Potential difference

c)

Current

17.
What is a benefit of using a parallel circuit?  
a)
It gets confusing.
b)
There are no problems.
c)
If one light goes out, it does not affect the others. 
d)
If one light goes out, they all go out. 
18.
a)
A2 = A3
b)
A2 + A3 = A1
c)
A1 + A2 = A3
d)
A4 = A2 - A3
19.
Parallel circuits are
a)

circuits with only one path for current to travel

b)

circuits with more than one path for current to travel

c)

circuits that do not allow electricity to travel through it

d)
magnets that cause electric current
20.
The picture shows an electrical circuit. This circuit is a series circuit because: 
a)
It has 3 light bulbs.
b)
The same current flows through all three light bulbs.
c)
It uses a single battery.
d)
The electrical current is divided between the three light bulbs.
21.

What is the current reading of ammeter A1 ?

a)

10 A

b)

6 A

c)

3 A

d)

4 A

22.

A voltmeter should be placed ........... with the component you are checking.

a)
in parallel
b)
in series
c)
in order
d)
upside down
23.

Which is the unit for voltage?

a)

Amps

b)

Ohms

c)

Volt

d)

Multimeter

24.

Which statement about electric current is correct?

a)

It always flows clockwise

b)

It gets used up as it goes around the circuit

c)

It does not get used up as it goes around the circuit

d)

It always flows anti-clockwise

25.

What would the voltmeter read?

The resistors are all identical.

a)
1V
b)
2V
c)
3V
d)
6V
26.

What is wrong with this plug?

a)

Cable grip not securing cable

b)

Outer plastic case damaged/cracked

c)

Cable not secured properly under cable grip

d)

Live/neutral incorrectly wired

27.

What is wrong with this plug?

a)

Cable grip not securing cable

b)

Outer plastic case damaged/cracked

c)

Cable not secured properly under cable grip

d)

Live/neutral incorrectly wired

28.
What is current measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
29.
What is resistance measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
30.
What is Resistance?
a)
The flow of electrons
b)
Electric potential difference
c)
A battery
d)
The ability to reduce the flow of electrons
31.
The mathematical relationship among Voltage, Current, and Resistance
a)
Faraday's Law
b)
Tesla's Law
c)
Edison's Law
d)
Ohm's Law
32.
Current times Resistance equals
 (I X R)
a)
Power
b)
Voltage
c)
Amperage
d)
Ohm
33.
If the Voltage is increased and the resistance stays the same, Current will
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
34.

If the Voltage stays the same and Resistance is increased, Current will

a)

Increase

b)

Decrease

c)

Stay the same

d)

Double

35.
What size resistor would produce a 3 Amp current flow with a 12 Volt battery
a)
1 Ohm
b)
3 Ohms
c)
4 Ohms
d)
12 Ohms
36.

Which ammeter will have the biggest reading?

a)

Ammeter 1

b)

Ammeter 2

c)

They will read the same

37.
A series circuit has ____ path(s) that the electric current can take. 
a)
One
b)
Two 
c)
Three 
d)
Four
38.

What happens to the current in a parallel circuit?

a)

The current stays the same

b)

The current is added

c)

The current is reduced

d)

The current is split between the light bulbs

39.

What happens to the voltage in a series circuit?

a)

The voltage stays the same

b)

The voltage is added

c)

The voltage is reduced

d)

The voltage is split between the light bulbs

40.

What happens to the voltage in a parallel circuit?

a)

The voltage stays the same in each branch

b)

The voltage is added

c)

The voltage is reduced

d)

The voltage is split between the light bulbs

41.

What would the voltmeter read?

The resistors are all identical.

a)
1V
b)
2V
c)
3V
d)
6V
42.

What is the voltage of an appliance if it uses 200 J per second when supplied with a current of 5 A?

a)

10 V

b)

20 V

c)

30 V

d)

40 V

43.

If lamp 2 is unscrewed from its holder, what will happen to lamp1?

a)

It will stay lit

b)

It will go out

c)

It will get dimmer

d)

It will dissapear

44.

An electric current is defined as the flow of ? through a conductor.

a)

electrons

b)

protons

c)

nuclei

d)

ohms

45.

The unit of electrical potential is the ? , which is represented by the letter ? .

a)

ampere/A

b)

resistance/R

c)

volt/V

d)

watt/W

46.
Current that reverses direction in a regular pattern is called ____. 
a)
direct current 
b)
circuit current
c)
magnetic current
d)
alternating current 
47.
Current that does NOT reverse direction is called ____. 
a)
magnetic current
b)
direct current
c)
circuit current
d)
alternating current
48.
What is electric current?
a)
The flow of electrons
b)
The flow of protons
c)
The flow of neutrons
d)
The flow of atoms
49.
How does resistance affect current?
a)
less resistance - less current
b)
more resistance - less current
c)
more resistance - more current
d)
resistance does not affect current
50.
AC stands for ___.
a)
Alternating Current
b)
Attraction Connections
51.

What is the unit we use to measure electric current?

a)

ampere (amp)

b)

ohm

c)

volt

d)

newton

52.
What 1 kW is equivalent to __________ watts?
a)
100 W
b)
1,000 W
c)
10,000 W
d)
10 W
53.

What is the power rating of a 240 volt, 6 amp device?

a)

1.44

b)

14.4

c)

144

d)

1440

54.
Power is measured in what unit?
a)
amps
b)
volts
c)
watts
d)
ohms
55.
Potential difference is another term for
a)
current
b)
voltage
c)
energy
d)
watts
56.
what is the power of a lamp whose current is 6 A and the voltage across it is 120 V?
a)
120 W
b)
720 W
c)
16 W
d)
10 W
57.
What is the power of a 3V light bulb with 20 A running through it?
a)
0.15W
b)
6W
c)
60W
d)
6.67W
58.
Electrical power can be calculated using
a)
Resistance x Voltage
b)
Voltage x Current 
c)
Voltage ÷ Current
59.
Watts is the same as...
a)
Joules per second
b)
Voltage per second
c)
Current per second
60.
What will be the current drawn by an electric bulb of 1000 W when it is connected to a source of 220 V?
Remember: I = P/V
a)
4.55 A
b)
28800 J or 28.8 KJ
c)
80 W
d)
200 W
61.
If an oven has a power of 2000 W and the voltage is 230 V what fuse is required?
a)
3A
b)
5A
c)
13A
62.
What size resistor would produce a 3 Amp current flow with a 12 Volt battery
a)
1 Ohm
b)
3 Ohms
c)
4 Ohms
d)
12 Ohms
63.
What is current measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
64.
What is resistance measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
65.
What is Resistance?
a)
The flow of electrons
b)
Electric potential difference
c)
A battery
d)
The ability to reduce the flow of electrons
66.
Current times Resistance equals
 (I X R)
a)
Power
b)
Voltage
c)
Amperage
d)
Ohm
67.
If the Voltage is increased and the resistance stays the same, Current will
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
68.
The mathematical relationship among Voltage, Current, and Resistance
a)
Faraday's Law
b)
Tesla's Law
c)
Edison's Law
d)
Ohm's Law
69.
Electricity that flows in a closed path is called a
a)
path
b)
current
c)
circuit
d)
light
70.
What is the Voltage of a circuit that has a resistance of 5 Ω and a current of 2 A?
a)
25 V
b)
10 V
c)
2.5 V
d)
0.4 V
71.

Voltage divided by Resistance equals

(V / R)

a)

Current

b)

Power

c)

Ohms

d)

Watts

72.

Voltage divided by Current equals

(V / I)

a)

Current

b)

Power

c)

Resistance

d)

Watts

73.

If the Voltage stays the same and Resistance is increased, Current will

a)

Increase

b)

Decrease

c)

Stay the same

d)

Double

74.
The fact the two angles are the same is an example of....
a)
Refraction
b)
Angle of Incidence
c)
Law of reflection
d)
Magnification
75.
The measure of how much light refracts is called...
a)
Refraction
b)
Law of reflection
c)
reflected ray
d)
Index of refraction
76.
A ray of light traveling from air into crown glass strikes the surface at an angle of 30 degrees. What is the angle of refraction? (air n=1, crown glass n=1.532)
a)
39.7 degrees
b)
19.2 degrees
c)
59.1 degrees
d)
12.3 degrees
77.
In what medium does light travel the fastest?
a)
vacuum
b)
air
c)
water
d)
glass
78.
If the angle of incidence increases, the angle of refraction ________.
a)
Increases
b)
Decreases
79.
When light passes at an angle to the normal from one material into another material in which its speed is higher 
a)
it is bent toward the normal.
b)
it always lies along the normal.
c)
it is unaffected.
d)
it is bent away from the normal.
80.
When light passes at an angle to the normal from one material into another material in which its speed is lower
a)
it is bent towards the normal.
b)
it always lies along the normal.
c)
it is unaffected.
d)
it is bent away from the normal.
81.
How is light affected by an increase in the index of refraction?
a)
Its frequency increases
b)
Its frequency decreases
c)
Its speed increases
d)
Its speed decreases
82.
The velocity of light in vacuum is _______ m/s
a)
3x108
b)
3x1012
c)
3x106
d)
3x1010
83.
Glass has a _____________ index of refraction than air.
a)
Equal
b)
Greater
c)
Less
d)
Impossible to say
84.
Absolute refractive index of any medium is always _______.
a)
less than 1
b)
greater than 1
c)
1
d)
0
85.

Refraction is the change in speed, wavelength and direction of a wave as it passes from one _________ into another.

a)

glass

b)

medium

c)

area

d)

boundary

86.
The velocity of light in vacuum is _______ m/s
a)
3x108
b)
3x1012
c)
3x106
d)
3x1010
87.
How does light behave as it enters these mediums?
a)
continue its path as straight line.
b)
bends toward the normal
c)
bends away from the normal
d)
reflects
88.
Glass has a _____________ index of refraction than air.
a)
Equal
b)
Greater
c)
Less
d)
Impossible to say
89.

What is the angle of incidence on a glass block with refractive index 1.52 if the angle of refraction is 32°?

a)

52.6

b)

20.7

c)

32.0

d)

74.3

90.

Which of the following is true about a wave that has been refracted?

a)

The speed and frequency changes, but the wavelength stays the same.

b)

The speed and wavelength changes, but the frequency stays the same.

c)

The wavelength and frequency changes, but the speed stays the same.

d)

The speed and frequency changes, but the amplitude stays the same.

91.
The fact the two angles are the same is an example of....
a)
Refraction
b)
Angle of Incidence
c)
Law of reflection
d)
Magnification
92.
The measure of how much light refracts is called...
a)
Refraction
b)
Law of reflection
c)
reflected ray
d)
Index of refraction
93.
A ray of light traveling from air into crown glass strikes the surface at an angle of 30 degrees. What is the angle of refraction? (air n=1, crown glass n=1.532)
a)
39.7 degrees
b)
19.2 degrees
c)
59.1 degrees
d)
12.3 degrees
94.
In what medium does light travel the fastest?
a)
vacuum
b)
air
c)
water
d)
glass
95.
If the angle of incidence increases, the angle of refraction ________.
a)
Increases
b)
Decreases
96.
When light passes at an angle to the normal from one material into another material in which its speed is higher 
a)
it is bent toward the normal.
b)
it always lies along the normal.
c)
it is unaffected.
d)
it is bent away from the normal.
97.
When light passes at an angle to the normal from one material into another material in which its speed is lower
a)
it is bent towards the normal.
b)
it always lies along the normal.
c)
it is unaffected.
d)
it is bent away from the normal.
98.
How is light affected by an increase in the index of refraction?
a)
Its frequency increases
b)
Its frequency decreases
c)
Its speed increases
d)
Its speed decreases
99.
The velocity of light in vacuum is _______ m/s
a)
3x108
b)
3x1012
c)
3x106
d)
3x1010
100.
Glass has a _____________ index of refraction than air.
a)
Equal
b)
Greater
c)
Less
d)
Impossible to say
101.
Absolute refractive index of any medium is always _______.
a)
less than 1
b)
greater than 1
c)
1
d)
0
102.
What is the most prominent use of Fiber Optics today?
a)
Phones
b)
Television Screens
c)
The Internet
d)
MRI imaging
103.

Light is travelling from air to water. Which path will the light most likely follow?

a)

A

b)

B

c)

C

d)

D

e)

E

104.

The higher the index of refraction, the faster light travels in that medium

a)

True

b)

False

105.

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

106.

What is the angle of reflection (θr) in the image?

a)

56o

b)

90o

c)

124o

d)

34o

107.

Refraction is the change in speed, wavelength and direction of a wave as it passes from one _________ into another.

a)

glass

b)

medium

c)

area

d)

boundary

108.

What is the equation linking angle of incidence, angle of refraction and index of refraction?

a)

n = sin(i)sin(r)n\ =\ \frac{\sin\left(i\right)}{\sin\left(r\right)}

b)

n = sin (r)sin (i)n\ =\ \frac{\sin\ \left(r\right)}{\sin\ \left(i\right)}

c)

n = rin\ =\ \frac{r}{i}

d)

n = sin(i) ×sin(r)n\ =\ \sin\left(i\right)\ \times\sin\left(r\right)

109.

State the name given to the change in direction of the signal at B

a)

Total internal reflection

b)

reflection

c)

dispersion

d)

refraction

110.

Light at the boundary from plastic to air undergoes total internal reflection at an angle of incidence of 45 degrees. The refractive index of this plastic is...

a)

1.4

b)

1.3

c)

1.1

d)

1.0

111.

The refractive index of a type of glass is 1.66.

What is the critical angle for this material?

a)

53.2

b)

48.8

c)

37

d)

no critical angle

112.
How is sound produced?
a)
By the vibration of particles
b)
By the transfer of particles 
113.
Area of a longitudinal wave where particles are CLOSE together.
a)
Compression
b)
Rarefaction
114.
The reflection of sound waves off of a hard surface can create ______.
a)
A wave
b)
An echo 
115.
Soft surfaces _______ sound waves. 
a)
Reflect
b)
Absorb
116.
____________ is determined by sound wave's frequency. 
a)
Compression
b)
Pitch 
117.
_______ is the number of waves that pass a certain point at an specific time. 
a)
Frequency 
b)
Pitch
c)
Amplitude
d)
I don't know
118.
Which device measures sound waves?
a)
Oscilloscope
b)
Stethoscope 
c)
Radio
d)
I don't know
119.

The units of frequency are...

a)

metres

b)

seconds

c)

Hertz

d)

degrees

120.

Sound is an example of a transverse wave

a)

True

b)

False

121.

Which of the following statements describes the period of a wave?

a)

Number of waves per second

b)

Distance from crest to crest

c)

Distance from resting position to top of the wave

d)

Time taken to produce one wave

122.

A microwave has a frequency of 300MHz. What is the wavelength of these waves?

a)

1000 m

b)

100 m

c)

10 m

d)

1 m

123.

All waves can be reflected and refracted.

a)

True

b)

False

124.

The period of a wave is 0.1 s. What is the frequency of this wave?

a)

0.1 Hz

b)

1 Hz

c)

10 Hz

d)

100 Hz

125.

Sound waves travel faster through ________ media, like water or steel. 

a)
Dense 
b)
Light
126.

The loudness of a sound is directly related to the wave's _____.

a)

wavelength

b)

frequecy

c)

rest position

d)

amplitude

127.
State the function of oscilloscope.
a)
To measure current
b)
To measure voltage
c)
To measure resistance
d)
To display voltage signals as waveforms
128.

Human ear can detect frequency ranging from about 20Hz up to (a)   Hz

129.

What is the frequency of the wave?

a)

2 Hz

b)

4 Hz

c)

1 Hz

d)

0.5 Hz

130.

What is the wavelength of the wave?

a)

2 m

b)

4 m

c)

6 m

d)

8 m

131.

Assume that the speed of sound is 330m/s. A ship is 220 m from a large cliff when it sound its foghorn. When the echo is heard on the ship , how far has the sound travel?

(a)  

132.
The time required for an AC waveform to complete one complete cycle is referred to as its _____.
a)
Cycle
b)
Period
c)
Amplitude
d)
Frequency
133.
A period is
a)
Amount of time it takes a wavelength to complete one cycle.
b)
How many wave lengths happen in a second.
c)
An indication of the amount of energy in a wave.
d)
The distance between two crests or two troughs.
134.

Diagram shows the trace displayed on the screen of a C.R.O. with the time-base set to 10 ms/div. What is the frequency, f of the wave?

a)

5 Hz

b)

25 Hz

c)

40 Hz

d)

50 Hz

135.

Diagram shows a waveform displayed on the screen of a C.R.O. If the controls on the C.R.O. are set at 0.5 V/div and 2 ms/div, find the peak voltage and the frequency of the input signal.

a)

4 V, 2 Hz

b)

5 V, 10 Hz

c)

2 V, 100 Hz

d)

4 V, 100 Hz

136.
When pressure increases, which of the following also increases?
a)
mass
b)
volume
c)
temperature
d)
length
137.
Liquid has a definite ___________, but a variable _____________.
a)
shape, volume
b)
mass, area
c)
smell, taste
d)
volume, shape
138.
Which of the following states of matter has the most kinetic energy?
a)
solid
b)
liquid
c)
gas
139.
To make a solid become a liquid, you must increase its________________.
a)
mass
b)
density
c)
kinetic energy
d)
potential energy
140.
Gas particles move around at __________ speeds. 
a)
low
b)
slow
c)
high
d)
unknown
141.

What state of matter is most tightly packed?

a)

solid

b)
liquid
c)
gas
d)
plasma
142.

What is specific heat capacity?

a)

The power needed to raise the temperature of 1 kg of a substance by 1oC.

b)

The energy needed to raise the temperature of 1 kg of a substance by 1oC.

c)

The temperature increase of 1 kg of a substance when it is heated for 1 minute.

d)

The mass of a substance whose temperature will increase by 1oC when heated for 1 minute.

143.

What are the units for energy?

a)

Joules (J)

b)

Watts (W)

c)

Kilograms (kg)

d)

Seconds (s)

144.

How do we say Δ in science and maths?

a)

Alpha

b)

Beta

c)

Gamma

d)

Delta

145.

The specific heat capacity of a substance is 1000 J/kgoC. How much energy is required to raise 1 kg of it by 1oC?

a)

10 J

b)

100 J

c)

1000 J

d)

10,000 J

146.

The diagram shows a heating curve for ice turning to steam. Which line represents the ice melting?

a)

A

b)

B

c)

C

d)

D

e)

E

147.

The diagram shows a heating curve for ice turning to steam. Why are lines B and D flat?

a)

All of the thermal energy is used to break the bonds.

b)

They stopped the stopwatch.

c)

They stopped heating the ice.

d)

The ice is freezing.

148.

The diagram shows a heating curve for ice turning to steam. Which line represents the ice in a liquid state (water)?

a)

A

b)

B

c)

C

d)

D

e)

E

149.

The diagram shows a cooling curve for steam turning to ice. Which line represents the ice in a liquid state (water)?

a)

A

b)

B

c)

C

d)

D

e)

E

150.

The diagram shows a cooling curve for steam turning to ice. Which line represents the ice freezing?

a)

A

b)

B

c)

C

d)

D

e)

E

151.

The diagram shows a cooling curve for steam turning to ice. Which line represents the ice in a solid form?

a)

A

b)

B

c)

C

d)

D

e)

E

152.

Two satellites of equal mass are in circular orbit around a planet. Satellite b is twice as far out. Which feels a stronger gravitational force?

a)

Satellite a

b)

Satellite b

c)

Both the same

153.

The space shuttle is orbiting the Earth clockwise. Which arrow shows the direction of the gravitational force acting on the shuttle?

a)

a

b)

b

c)

c

d)

d

154.

A satellite is launched into an orbit around the Earth. The time taken to complete an orbit is known.

What additional information do you need to calculate the orbital speed of the satellite?

a)

The distance from the centre of the Earth

b)

The acceleration of gravity at the surface

c)

Earth's distance from the Sun

d)

The satellite's size

155.

When a satellite travels at constant speed, its orbit shape is approximated as a(n)

a)

circle

b)

ellipse.

c)

oval that is almost elliptical

d)

square

156.

If the distance between a planet and the Sun increases, the strength of the gravitational force __________________.

a)

increases

b)

decreases

c)

stays the same

157.

You discover a new planet in our solar system. You measure it's orbital period to be 246 Earth years.


Where is this planet likely to be located based on this information?

a)

Closer to the Sun than Mercury.

b)

Located between Earth and Jupiter.

c)

Located between Uranus and Neptune.

d)

Located beyond Neptune.

158.

The Moon has an orbital period of 27.3 days and is 384399 km from the Earth.


What is the orbital speed of the Moon?

a)

0.5 km/s

b)

1.0 km/s

c)

2.0 km/s

d)

5.0 km/s

159.
What did Kepler discover about planets and their orbital speed?
a)
Planets closest to the Sun will orbit with the fastest orbital speed.
b)
Planets with the greatest mass will orbit the Sun with the fastest orbital speed.
c)
Planets furthest from the Sun will orbit with the fastest orbital speed.
d)
Planets with the least mass will orbit the Sun with the fastest orbital speed.
160.
What would happen to the planets in our solar system if the Sun suddenly disappeared?
a)
They would explode 
b)
They would fly off into space 
c)
They would all crash into Mars
161.

A planet with a short orbit has...

a)

a short day

b)

a long day

c)

a long year

d)

a short year

162.

Which planet will take the least amount of time to revolve around the Sun?

a)

Mercury

b)

Venus

c)

Earth

d)

Mars

163.

Without gravity, the stars, planets and all objects in the universe would _______.

a)

continue to orbit each other

b)

move in a random direction

c)

move in a straight line

d)

stop moving

164.

What would happen to Earth if its forward motion stopped?

a)

Earth would continue to orbit in our Solar System normally.

b)

Earth would sit motionless and not moving.

c)

Earth would drift off in space because nothing would hold it in the Solar System.

d)

Earth would move toward the Sun and eventually crash into it.

165.
The Earth is rotating on its axis, creating _____
a)
the 12 months
b)
the years
c)
the seasons
d)
day and night
166.
The movement of the Earth around the Sun is called its _____
a)
revolution
b)
rotation
c)
precession
d)
gyration
167.
True or False: The Sun revolves around the Earth
a)
True
b)
False
168.

What orbits the Earth?

a)

The Sun

b)

The Moon

c)

Jupiter

d)

All The Planets

169.

Convert 1 Earth year to Earth seconds.

a)

8766 s

b)

525960 s

c)

31557600 s

d)

1893456000 s

170.

Deimos is a moon that orbits the planet Mars.

The radius of its orbit is 23500 km and its time period is 1.26 days.

Calculate the orbital speed of Deimos.

a)

117000 km/day

b)

11700 km/day

c)

18700 km/day

d)

1870 km/day

171.

Mars is 1.5 times further away from the Sun that the Earth.

One Mars year is 1.88 Earth years long.

If the Earth travels at 30km/s. How fast is Mars travelling?

a)

10.6 km/s

b)

23.9 km/s

c)

30 km/s

d)

84.6 m/s

172.
What is the anticlockwise moment acting on this crane?
a)
80,000Nm
b)
100,000Nm
c)
120,000Nm
d)
140,000Nm
173.
What is the moment acting on the seesaw?
a)
1.6Nm
b)
15Nm
c)
16N
d)
4Nm
174.
A seesaw is unbalanced with two people of different masses sitting equal distances from the center. Which of the following will result in equilibrium?
a)
The larger person moving further away from the center.
b)
Moving the smaller person closer to the center.
c)
Moving the smaller person further from the center.
d)
Making the larger person do nothing.
175.

Two masses of mass 10.0 and 6.0 kg are hung from massless strings at the end of a light rod. The rod is virtually weightless. A pivot (fulcrum) is placed off center and the system is free to rotate. If the 6.0 kg mass is 4.0 m away from the pivot, how far away is the 10.0 kg mass if the system is not rotating?

a)

0.42 m

b)

2.4 m

c)

4.8 m

d)

4.2 m

176.
What is the moment produced by the 15 N?
a)
15 Nm (clockwise)
b)
150 Nm (anti - clockwise)
c)
1.5 Nm (anti - clockwise)
d)
0.15 Nm (clockwise)
177.
The easiest way to open a heavy door  is by applying the force
a)
Near the hinges
b)
In the middle of the door
c)
At the edge of the door far from the hinges
d)
At the top of the door
178.
A wrench is used to tighten a nut. A 15N perpendicular force is applied 50cm away from the axis of rotation, and moves a distance of 10 cm as it turns. What is the torque applied to the wrench?
a)
7.5 Nm
b)
1.5 Nm
c)
750 Nm
d)
150 Nm
179.

A nut can be loosened more easily with

a)

a short spanner because a larger turning effect can be produced.

b)

a long spanner because a larger turning effect can be produced.

c)

a long spanner because a larger force can be produced.

d)

a short spanner because a larger force can be produced.

180.

The figure below shows a man lifting a heavy rock using a steel bar. He pushes downwards on the end of the bar with a force F.


Which pivot positions allows the force F to be as small as possible?

a)

A

b)

B

c)

C

d)

D

181.

A boy of weight 600N sits on the see-saw as shown at a distance of 1.5m from the pivot. What is the force F required at the other end to balance the see-saw?

a)

450 N

b)

350 N

c)

4.5 N

d)

200 N

182.
Moment is a quantity that tells turning effect of a force about turning point. 
a)
TRUE
b)
FALSE
183.

At what distance should a 2N load placed from the pivot so that the see saw won't move?

a)

0.2m

b)

0.5m

c)

0.45m

d)

0.42m

184.

State the principle of moments.

a)

When a system is in equilibrium, the sum of the total clockwise moment is equal to the sum of the total anti-clockwise moment about the same pivot.

b)

When a system is in equilibrium, the sum of the total clockwise moment is greater the sum of the total anti-clockwise moment about the same pivot.

c)

When a system is in equilibrium, the sum of the total clockwise moment is less than the sum of the total anti-clockwise moment about the same pivot.

d)

When a system is in equilibrium, the sum of the total clockwise moment is equal to the sum of the total anti-clockwise moment about the different pivot.

185.
Hooke's Law describes the behaviour of which kind of material under tension?
a)
plastic
b)
metals only
c)
elastic
d)
non-metals only
186.

What is the best description of the relationship shown in this graph?

a)

In this graph, the relationship between force and extension is linear.

b)

In this graph, the relationship between force and extension is non-linear.

c)

In this graph, the relationship between force and extension is directly proportional.

d)

In this graph, there is no relationship between force and extension.

187.

The graph shows the relationship between force and extension as a spring is extended. What is another name for point A?

a)

Point A is the elastic limit

b)

Point A is the elastic summet

c)

Point A is the plastic limit

d)

Point A is the extension limit

188.

In which side of the graph does the spring obey Hooke's law?

a)

To the left of point A

b)

To the right of point A

189.

Which statement most accurately represents Hooke's Law?

a)

a) The stretch of a spring is directly proportional to the force applied.

b)

b) The stretch of a spring is proportional to the number of coils.

c)

c) The stretch of a spring is inversely proportional to the force applied.

d)

d) Thickness of a spring wire is proportional to the force applied.

190.

An unstretched spring becomes longer when a force is applied to it. Which word describes the additional length of the spring gains?

a)

Expansion

b)

Extension

c)

Stretched

191.

Select a logical prediction for the investigation.

a)

As the force applied to the spring increases, the extension of the spring will decrease.

b)

As the force applied to the spring increases, the extension of the spring will stay the same

c)

As the force applied to the spring increases, the extension of the spring will also increase.

192.

An elastic material can change shape when ________ is exerted on it.

a)

a force

b)

a moment

c)

an acceleration

193.

A deformation is a change in _________.

a)

Speed

b)

shape

c)

direction

194.

In the diagram, a force is used to stretch a spring. The spring is temporarily deformed when the force is applied. When the force is removed, the spring . . .

a)

returns to its original length.

b)

stays the same length.

195.

The _________ of an object is the increase in its length when it is stretched.

a)

compression

b)

extension

196.

For this spring, as the force increases, the extension increases proportionally. What would you expect to happen to the extension if the force was doubled?

a)

The extension would stay the same.

b)

The extension would double

c)

The extension would halve

197.

Hooke's Law stops being relevant when a material goes past its:

a)
breakdown
b)
elastic limit
c)
end of tether
d)
fracture stress