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Physics Jojo

Total questions: 115

Worksheet time: 2hrs 46mins

Name
Class
Date
1.

A force of 400 N is applied to stretch a spring which has a spring constant, k=100 N/m. How much does the spring stretch past its free length?

a)

0.4 m

b)

2.34 m

c)

4 m

d)

5.17 m

2.

A force of F=500 N is applied to extend a spring. What is the displacement x of the spring if its spring constant is k= 500 N/m?

a)

0.1 m

b)

1 m

c)

1000 m

d)

100m

3.

_________ is the unit of Spring Constant

a)

N

b)

N/m

c)

m

4.

Who discovered Hooke's law?

a)

Robert Hooke

b)

Charlie

c)

Newton

5.

According to Hooke's law; Force is equal to -

a)

Spring Constant × Extension

b)

Spring Constant ÷ Extension

c)

Spring Constant + Extension

6.

If the original length of a spring is 20m and its extended length is 30m. What is the extension?

a)

20m

b)

12m

c)

75m

d)

45m

e)

10m

7.
Hooke's Law fails when a material reaches its:
a)
breakdown
b)
elastic limit
c)
end of tether
d)
fracture stress
8.
A graph of extension against force for an elastic material is:
a)
A downward curve
b)
An upward curve
c)
A straight line from any point on the x and y axis
d)
A straight line from the origin
9.
If extension = Stretched length - original length. What is the extension of spring D.
a)
1mm
b)
2mm
c)
3mm
d)
0mm
10.

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.

11.

The unit of work is

a)

watt

b)

hertz

c)

joule

d)

pascal

12.

Which requires more WORK – a person WALKING up stairs OR a person RUNNING up stairs?

a)

walking

b)

running

c)

they require equal work

d)

no work is required for either because the movement is vertical

13.

As speed increases, kinetic energy

a)

Increases

b)

Decreases

c)

Stays the same

d)

Increase then decrease

14.

The kid at the top of the roller coaster car pictured here has

a)

100% Potential Energy

0% Kinetic Energy

b)

75% Potential Energy

25% Kinetic Energy

c)

50% Potential Energy

50% Kinetic Energy

d)

0% Potential Energy

100% Kinetic Energy

15.
What type of energy is in this picture?
a)
Kinetic
b)

Elastic Potential

c)

Gravitational Potential

d)
Sound
16.

What is energy?

a)

Force

b)

The ability to do work

c)

Electricity

d)

The ability to transform work

17.

Which of the following energy types are Potential energy?

a)

Chemical Energy

b)

Radiant Energy

c)

Thermal Energy

d)

Nuclear Energy

e)

Elastic Energy

18.

What is thermal energy?

a)

Electromagnetic energy that travels in waves and comes from the sun

b)

Heat that is in substances - the motion of atoms and molecules

c)

Energy stored between the bonds of atoms in molecules

d)

Energy stored in the nucleus of an atom.

19.

What kind of energy

resources ?

a)

Geothermal

b)

Tidal

c)

wind

d)

Biofuels

20.
What characteristic do all renewable resources share?
a)
Produced by waste products
b)
Form underground from dead organisms.
c)
Replaced in a short period of time
d)
Allow energy to pass through them easily
21.
Which of the following is a fossil fuel?
a)
Wind
b)
Coal
c)
Solar
d)
Biomass
22.
The energy resource that is most affected by change in weather is_____________?
a)
geothermal 
b)
wind
c)
nuclear
d)
natural gas
23.
Fossil fuels are classified as nonrenewable because they.......
a)
require expensive equipment
b)
take millions of years to replace
c)
can be found all over 
d)
provide all the energy we use
24.
What are two advantages of geothermal energy?
a)
cheap and a lot pollution
b)
expensive and a lot of pollution
c)
cheap and little pollution
d)
expensive and little pollution
25.

What is geothermal energy?

a)

A power plant.

b)

Heat energy generated and stored in the Earth.

c)

Nuclear Energy

d)

A nonrenewable resource

26.

The ability to do work or cause change:

a)

work

b)

energy

c)

momentum

d)

power

27.

Energy in the form of motion.

a)

mechanical energy

b)

potential energy

c)

kinetic energy

d)

momentum

28.

Stored energy in the form of position or condition.

a)

potential energy

b)

kinetic energy

c)

momentum

d)

mechanical energy

29.

What is needed to calculate work?

a)

force

b)

distance

c)

time

d)

mass

30.

A student needs 10 Newtons of force to lift a box to the top of a 2 meter shelf. How much work do they do?

a)

12 J

b)

8 J

c)

20 J

d)

5 J

31.

A soccer player kicks a ball with 20 Newtons of force causing it to travel 100 meters. How much work is done on the ball?

a)

200 J

b)

80 J

c)

5 J

d)

2000 J

32.

A worker climbs a ladder and does 8 J of work on a 2 N object. What is the distance they lift the object?

a)

18 m

b)

4 m

c)

10 m

d)

6 m

33.

What is mechanical energy?

a)

total kinetic energy

b)

the energy of motion

c)

total kinetic and potential energy

d)

temperature plus heat

34.

Which of these items is are part of the law of conservation of energy?

a)

energy cannot be created nor destroyed

b)

energy can be destroyed

c)

energy can be transferred between forms

d)

energy is destroyed by friction

e)

energy can be created

35.

Energy is

a)

how fast you do something.

b)

the ability to do work.

c)

confusing.

d)

how fast you lift something.

36.
What kind of energy does this device use?
a)
Chemical
b)
Electrical
c)
Thermal
d)
Chemical
37.
The unit of work is the ...
a)
joule
b)
force
38.
Work divided by time equals...
a)
energy
b)
power
39.
Energy of a rock perched on a cliff is an example of...
a)
gravitational
b)
elastic
c)
chemical
d)
kinetic
40.

The SI unit for power

a)

Watts

b)

Joules

c)

Newtons

d)

Meters

41.

Kinetic energy depends on the ________ and ________ of the object.

a)

Height and Mass

b)

Spring constant and Distance away from equilibrium

c)

Mass and Velocity

d)

Height and Friction

42.

Elastic Potential Energy depends on the ________ and ________ of the object.

a)

Height and Mass

b)

Spring constant and Distance away from equilibrium

c)

Mass and Velocity

d)

Height and Friction

43.
How much work is being done with 200 N of force over 426 meters?
a)
85,200 J
b)
45,620 J
c)
90,480 J
d)
62,329 J
44.
The energy of movement is...? 
a)
Kinetic
b)
Potential
45.
What is the formula for Kinetic Energy?
a)
PE = m*g*h
b)
KE = 1/2m*v2
c)
W = F*d
d)
P = W/t
46.
A force exerted over a distance to move an object is ______________________.
a)
power
b)
work
c)
momentum
d)
Watt
47.
If 68 Joules were necessary to move a 4 Newton crate, how far was the crate moved?
a)
272 m
b)
17 m
c)
4.05 m
d)
272 cm 
48.
When you release a stretched rubber band, the rubber band has ________ energy. 
a)
kinetic 
b)
potential
c)
none of the above
d)
all of the above 
49.
Elastic potential energy is energy stored in object that are compressed or __________. 
a)
movement
b)
stored
c)
harnessed
d)
pulled 
50.

A spring has a spring constant of 450 N/m. How far is the spring compressed if 150 N of force are used?

a)

2.2 m

b)

3m

c)

5.0 m

d)

0.3 m

51.

Which of the following springs is the stiffest?

a)

A spring that requires a force of 2000 N to compress it by 5 m.

b)

A spring that requires a force of 4000 N to stretch it by 10.0 m.

c)

A spring that requires a force of 2400 N to compress it by 4m.

d)

A spring that requires a force of 4800 N to stretch it by 12 m.

52.
A spring with a spring constant of k is cut into 4 equal length pieces.  What is the spring constant of each of the pieces?
a)
1/2 K
b)
2 K
c)
1/4K
d)
4K
53.

_________ is the unit of Spring Constant

a)

N

b)

N/m

c)

m

54.

Who discovered Hooke's law?

a)

Robert Hooke

b)

Charlie

c)

Newton

55.

If the original length of a spring is 20m and its extended length is 30m. What is the extension?

a)

20m

b)

12m

c)

75m

d)

45m

e)

10m

56.

What is the spring constant of a bungee rope in N/m if a person weighs 100 N if we want it to extend (stretch) 20m?

a)

5N/m

b)

5N/cm

c)

5N

d)

10N

e)

10N/m

57.

When you increase your depth under water, the water pressure on your body

a)

increases

b)

decreases

c)

stays the same

58.

How do you Calculate Pressure

a)

Force(N)/Area(m2)

b)

Force(kg)/Area(mi2)

c)

Area(m2)/Force(N)

59.

Diagram shows the design of a dam. Why does the thickness of the dam increase with its depth?

a)

The design of this structure is stronger.

b)

Water pressure increases with depth.

c)

The cost of construction is lower.

d)

Water pressure acts uniformly in all directions.

60.
What pressure does a 4000N horse exert on the ground if each foot is 10cm2? (Remember to CONVERT the cm2 to m2)
a)
4000 N/m2
b)
10000 N/m2
c)
4000000 N/m2
d)
1000000 N/m2
61.
Buoyancy is the tendency for objects to float in a fluid. Buoyancy pushes the opposite direction of...
a)
waves push.
b)
magnetic pull.
c)
the wind.
d)
gravity's pull
62.
Car brakes and car jacks are examples of
a)
hydraulic systems
b)
archimedes' principle
c)
atmospheric pressure
d)
buoyancy
63.
The amount of force pushing on an area is the definition of....
a)
Fluid
b)
Viscosity
c)
Barometer
d)
Pressure
64.
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
65.
Pressure is measured in what units
a)
Newtons
b)
m/s
c)
Pascals
d)
Moles
66.
Pressure can be measured in Pascales (Pa) or Newtons per square metre.
1 Pa = 1N/m2
a)
True
b)
False
67.

Pressure in gases is a measure of:

a)

the number of collisions per second of the particles with the side of the container.

b)

the force of the collisions of the particles with the side of the container.

c)

the amount of space taken up by the particles in the container.

d)

None of the above

68.

The pressure inside the balloon will:

a)

Decrease

b)

Increase

c)

Remain the same

d)

Not enough information to formulate an answer

69.

We can increase the pressure of a gas by:

a)

Adding more gas.

b)

Reduce the volume of the container.

c)

Increase the temperature of the gas.

d)

None of the above answers.

70.

The reason gases can be compressed is because:

a)

The particles are very close together.

b)

The particles are merely vibrating.

c)

The particles are unable to move.

d)

The particles are very far apart.

71.

How much force is needed to pull a spring with a spring constant of 20 N/m a distance of 25 cm?

a)

10

b)

20

c)

15

d)

5

72.
If F is force, k is spring constant and x is extension, Hooke's Law tells us that:
a)
F=k/x
b)
x=Fk
c)
k=Fx
d)
F=kx
73.
Hooke's Law fails when a material reaches its:
a)
breakdown
b)
elastic limit
c)
end of tether
d)
fracture stress
74.
Which statement most accurately represents Hooke's Law?
a)
a) Extension of a spring is proportional to the force applied.
b)
b) Extension of a spring is proportional to the number of coils.
c)
c) Extension of a spring is inversely proportional to the force applied.
d)
d) Thickness of a spring wire is proportional to the force applied.
75.

The diagram shows an apparatus set up to measure atmospheric pressure.

Calculate the pressure at point Q.

a)

10 cm Hg

b)

85 cm cm Hg

c)

90 cm Hg

d)

15 cm Hg

76.

The figure shows a simple barometer with some air trapped in the tube. Given that atmospheric pressure is 76 cm Hg, find the pressure of the trapped air.

a)

21 cm Hg

b)

24 cm Hg

c)

45 cm Hg

d)

55 cm Hg

77.

Which gas has a greater pressure?

a)

air

b)

methane

c)

The gas pressures are equal

78.

If the atmospheric pressure is 740 mmHg, what is the pressure of the methane gas?

a)

740 mmHg

b)

770 mmHg

c)

710 mmHg

d)

30 mmHg

79.
a)

A

b)

B

c)

C

d)

D

80.

What is the pressure of trapped gas

a)

76 cm of Hg

b)

66 cm of Hg

c)

86 cm of Hg

d)

10 cm of Hg

81.

Water with density of 1 g cm-3 and oil are

filled into a U-tube. What is the density of the oil ?

a)

0.83 g cm-3

b)

1.20 g cm-3

c)

8.30 g cm-3

d)

0.90 g cm-3

82.

If the height of liquid 2 (h2) is 2 cm and the density of the Liquid 2 is 1.000 kg/m3, the what is the height of Liquid 1 if the density of Liquid 1 is 800 kg/m3 ?

a)

0,8 cm

b)

1,6 cm

c)

2,5 cm

d)

.8 cm

83.
A person wearing steel toe capped boots and a person wearing stilleto heels stand on a wooden floor. They both have the same weight. Which person exerts a greater pressure on the floor?
a)
The person wearing the boots because the boots have a larger surface area in contact with the floor
b)
The person with the stiletto heels because they have a larger surface area in contact with the floor
c)
The person wearing the boots because the boots have a smaller surface area in contact with the floor 
d)
The person with the stiletto heels because they have a smaller surface area in contact with the floor
84.
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
85.

Over what area must a force of 50N be applied to produce a pressure of 5Pa ?

a)

10 m2

b)

50 m2

c)

1 m2

d)

0.1 m2

86.

A car of weight 6,400 N has four wheels. Each wheel has an area of 80 cm2 touching the road. Find the pressure the car puts on the ground.

a)

200 N/cm3

b)

20 N/cm3

c)

200 N/cm2

d)

150 N/cm2

87.

Isaac weighs 800 N. His foot is roughly 0.1 m x 0.2 m.

a. Calculate the pressure on the ground if he stands on one foot.

b. Calculate the pressure on the ground if he stands on both feet.

(a)  

88.

Albert want to place trapezium prism shaped block as shown on a table, so that it exert greatest pressure on the table. What face of that block you suggest to Albert to be chosen?

a)

ABCD

b)

EFGH

c)

HGCD

d)

EFBA

89.
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
90.

Hubungan tekanan yang tepat dari gambar adalah

a)

ρA>ρB>ρC=ρD<ρE\rho_A>\rho_B>\rho_C=\rho_D<\rho_E

b)

ρA>ρB=ρC=ρD>ρE\rho_A>\rho_B=\rho_C=\rho_D>\rho_E

c)

ρA=ρB>ρC=ρD<ρE\rho_A=\rho_B>\rho_C=\rho_D<\rho_E

d)

ρA=ρB=ρC=ρD=ρE\rho_A=\rho_B=\rho_C=\rho_D=\rho_E

91.

Perhatikan tabel berikut!


Berdasarkan tabel tersebut pernyataan yang benar mengenai hubungan tekanan udara dengan ketinggian adalah ....

a)

ketingian tempat menghambat tekanan udara

b)

semakin tinggi tempat, maka tekanan udaranya semakin kecil

c)

semakin tinggi tempat , maka tekanan udaranya semakin besar

d)

semakin rendah tempat, maka tekanan udaranya terhambat

92.

Please refer to the following picture.

If the atmospheric pressure on the water surface is 76 cm Hg, then what is the air pressure in X.

a)

71 cmHg

b)

73 cmHg

c)

76 cmHg

d)

81 cmHg

93.

What is the minimum force in hydraulic 1 so it can lift the car?

a)

100.000N

b)

50.000N

c)

10.000N

d)

4.000N

94.
What is the pressure in the hydraulic fluid?
a)
1210 N
b)
484 N/m2
c)
8000 N
d)
3025 N/m2
95.

Which factors should be considered when choosing an energy type? (Choose 3)

a)

soil type

b)

location

c)

temperature

d)

pollution created

e)

habitat disruption

96.

What changes chemical energy from fossil fuels into electrical energy?

a)

electric generators

b)

nuclear fission

c)

power plants

d)

windmills

97.

A generator converts _______________ energy from a turbine to electrical energy.

a)

Thermal

b)

Chemical

c)

Kinetic

d)

Solar

98.

Which of the following is a reason why we cannot rely entirely on NON-RENEWABLE energy resources?

a)

They cause very little pollution

b)

They will run out

c)

They can only be used near water supplies

d)

They cannot be used in all weather conditions

99.

Which of the following is an advantage of using coal as an energy resource?

a)

There is not an abundant supply of coal.

b)

Coal is less expensive than oil.

c)

Burning coal contributes to global warming.

d)

Coal can be used to produce electricity.

100.

What is the difference between renewable and non-renewable energy resources?

a)

Renewable energy sources will run out, non-renewable energy sources will not

b)

Renewable energy sources create a lot of pollution, non-renewable energy sources create very little

c)

Renewable energy sources come from fuels removed from the Earth, non-renewable energy resources are not

d)

Renewable energy sources will not run out, non-renewable energy sources will

101.

What are fossil fuels?

a)

energy producers that comes from radioactive elements

b)

a natural product that can be changed into other energy forms to do work

c)

energy resources that formed from buried plants and animals that lived a very long time ago

d)

resources that are replaced faster than they are used

102.

What is an energy resource?

a)

a natural product that can be changed into other energy forms to do work

b)

something formed from buried plants and animals

c)

force that opposes motion

d)

resource that can never be replaced

103.

What is a device that changes solar energy into electrical energy?

a)

wind turbine

b)

perpetual motion machine

c)

electric generator

d)

solar cell

104.

Which of the following is an example of a RENEWABLE resource?

a)

oil

b)

coal

c)

biomass

d)

natural gas

105.

When moving air strikes the blades of a wind turbine, it causes the blades to turn. What form of energy do the moving blades have?

a)

chemical

b)

electrical

c)

thermal

d)

kinetic

106.

Which of these changes happens when you run?

a)

Chemical energy is changed to kinetic energy

b)

Your body makes new energy

c)

Energy is used up and lost

d)

Mechanical energy is changed to chemical energy

107.

All of the following are fossil fuels EXCEPT

a)

oil

b)

water

c)

coal

d)

natural gas

108.

What is it called when you generate electricity with a dam and water?

a)

Geothermal Energy

b)

Hydroelectric Energy

c)

Solar Energy

109.

What is it called when humans generate electricity by using the heat of the Earth?

a)

Geothermal Energy

b)

Hydroelectric Energy

c)

Solar Energy

110.

Out of the choices below, which form of energy makes the most pollution?

a)

Geothermal

b)

Hydroelectric

c)

Fossil Fuel

111.

This form of electrical energy generating is called

a)

Hydroelectric

b)

Geothermal

c)

Wind

112.

Solar power works by storing sunlight in batteries using which type of cells?

a)

Eukaryotic cells

b)

Radiation cells

c)

Photovoltaic cells

d)

Thermal cells

113.

A fuel formed from living organisms such as plants & animals.

a)

Fossil Fuel

b)

Bio Fuel

c)

Eco Fuel

d)

Plant Fuel

114.

Which is NOT an example of a RENEWABLE RESOURCE?

a)

Wind

b)

Sun

c)

Water

d)

Coal

e)

Biomass

115.

Which is NOT an example of a NON RENEWABLE RESOURCE?

a)

Geothermal

b)

Fossil Fuel Oil

c)

Coal

d)

Nuclear Power

e)

Natural Gas

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