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Forces

Total questions: 124

Worksheet time: 3hrs 34mins

Name
Class
Date
1.
What is the net force?
a)
20 N 
b)
0 N 
c)
400 N 
d)
40 N 
2.

What is the unit to MEASURE force?

a)

Kilogram

b)

Meter

c)

Pounds

d)

Newton

3.
What is the net force?
a)
10 N
b)
0 N
c)
25 N
d)
1 N
4.
If these teams are pulling with the same amount of force what will happen?
a)
The boy in blue will win.
b)
They will not move at all.
c)
The boy in red will win.
d)
Both will fall down.
5.
Balanced or unbalanced?
a)
balanced
b)
unbalanced
6.

Forces that have a net force of zero Newtons

a)

Balanced force

b)

Unbalanced force

7.
What will cause an object to move?
a)
Applied forces
b)
Balanced forces
c)
Unbalanced forces
8.
A push or pull that causes a change in motion
a)
Friction
b)
Gravity
c)
Force
d)
Mass
9.
Calculate the Net Force. 
a)
60N, Left 
b)
40N, Right 
c)
0N
d)
60N, Right
10.
You and your dad are moving the couch from one side to another. Your dad pushes with a force of 35 N to the right and you push with a force of 25 N right. What is the net force on the couch?
a)
60 N right
b)
10 N left
c)
60 n right
d)
50 N left
11.
What force holds the planets in motion around the sun?
a)
Magnetic
b)
Electrical
c)
Gravitational
d)
Air Resistance
12.
What force brings the pencil down?
a)
Applied
b)
Magnetic
c)
Normal
d)
Gravitational
13.
What force ultimately slows the roller coaster to a stop?
a)
Applied
b)
Normal
c)
Friction
d)
Magnetic
14.
Jupiter has about 317 times more mass than Earth. What can you infer from this fact? 
a)
That Jupiter’s gravitational force is much weaker than on Earth’s gravitational force.
b)
That Jupiter’s gravitational force is much stronger than Earth’s gravitational force.
c)
That Jupiter’s and Earth’s gravitational forces are equal.
d)
Mass has no effect on the gravitational force between two objects
15.
This type of force resist motion between two surfaces that are pressed together
a)
contact
b)
gravity
c)
friction
16.
What is it called when the force of gravity is acting on an object?
a)
Weight
b)
Sliding Friction
c)
Momentum
d)
Projectile Motion
17.

Which two of these forces act on parachutes?

a)

Air Resistance

b)

Gravity

c)

Thrust

d)

Kinetic Energy

18.

Another name for air resistance is...

a)

Buoyancy

b)

Streamline

c)

Gravity

d)

Drag

19.

What causes an object to fall faster?

a)

Smaller surface area

b)

Larger surface area

c)

If it has a parachute

d)

If it is softer

20.

The larger the surface area of the moving object, the ___________ air resistance there is.

a)

Less

b)

More

c)

Longer

d)

Quicker

21.

The larger the parachute the ____________

a)

Less air resistance

b)

More surface tension

c)

Less drag

d)

More drag

22.

The more streamlined an object is, the...

a)

More air resistance

b)

Less air resistance

c)

Slower air resistance

d)

Faster air resistance

23.

When dropped from the same distance, which will fall to the floor faster?

a)
b)
24.

What is a parachute designed to maximize?

a)

Gravity

b)

Air Pressure

c)

Air Resistance

d)

Thrust

25.

Complete the sentence.

It is not the difference in gravity that causes objects to fall at different speeds, it’s the difference in the amount of__________________.

a)

Gravity

b)

Mass

c)

Air resistance

26.

What is a Force?

a)

The distance

b)

A Jedi mindtrick

c)

A push or pull

27.
 What is the unit called that measures force?
a)
Isaac
b)
Yee
c)
Newton
d)
kilogram
28.

The scientist who is most famous his work on forces

a)

Albert Einstein

b)

Stephen Hawking

c)

Sir Isaac Newton

d)

Galileo Galilei

29.
If these boys are pulling with the same amount of force.  What will happen?
a)
The boy in blue will win.
b)
They will not move at all.
c)
The boy in red will win.
d)
Both will fall down.
30.

A pull moves things _______ .

a)

Close to you

b)

Away from you

31.

A push moves things _______ .

a)

Close to you

b)

Away from you

32.

Which of the forces in this image is the smallest?

a)

A

b)

B

c)

C

d)

D

e)

E

33.

What type of force is needed to unlock a door?

a)

Pull

b)

Push

c)

Twist

d)

Jump

34.

What is an object doing when it is decelerating?

a)

Speeding up

b)

Slowing down

c)

Traveling at a constant speed

35.

The force that pulls objects towards Earth.

a)

Gravity

b)

Friction

c)

Force

36.

A force that results from two objects rubbing past each other.

a)

Gravity

b)

Friction

c)

Air Resistance

37.

The kicker applies a__________to the other karate master.

a)

Pull

b)

Pomegranate

c)

Pizza

d)

Push

38.

What tool is used to measure weight or force?

a)

Newton meter

b)

Ruler

c)

Stopclock

d)

Tape Measure

39.

What is this?

a)

Stop Watch

b)

Meter Stick

c)

Newton meter

d)

Test Tube

40.

To calculate pressure what two things do you need to know?

a)

Force and area

b)

Force and volume

c)

Force and size

d)

Force and colour

41.

The force is often the...

a)

weight

b)

mass

c)

area

d)

size

42.

What equation do we use to calculate pressure?

a)

Force ÷ Area

b)

Force + Area

c)

Force - Area

d)

Force x Area

43.

What unit is force measured in?

a)

seconds

b)

centimeters

c)

Newtons

d)

kilograms

44.

A force of 20 N acts over an area of 4 m2 . Calculate the pressure.

Use the equation: pressure = force ÷ area

(a)  

45.

What happens to the pressure in a liquid the deeper you go?

a)

It increases

b)

It decreases

46.

A person weighs 400 N and stand on one foot which has an area of 50 cm². Calculate the pressure this person puts on the ground.

a)

400 N/cm3

b)

8 N/cm3

c)

50 N/cm3

d)

0.125 N/cm3

47.

Why don't people wearing snow shoes sink into the snow?

a)

The snow shoes spread their weight over a large area so the pressure is low

b)

The snow shoes spread their weight over a large area so the pressure is high

c)

The snow shoes concentrate their weight over a small area so the pressure is low

d)

The snow shoes concentrate their weight over a small area so the pressure is high

48.

Why don't camels sink into the sand?

a)

Their large feet spread their weight over a large area so the pressure is low

b)

Their large feet spread their weight over a large area so the pressure is high

c)

Their large feet concentrate their weight over a small area so the pressure is low

d)

Their large feet concentrate their weight over a small area so the pressure is high

49.

Why do darts stick in a dart board?

a)

The force is concentrated over a small area so the pressure is low

b)

The force is concentrated over a small area so the pressure is high

c)

The force is spread over a large area so the pressure is high

d)

The force is spread over a large area so the pressure is low

50.

How do the particles behave in a gas?

a)

Move quickly in one direction

b)

Move quickly in all directions

c)

Move slowly in all directions

d)

Move slowly in one direction

51.

When the gas particles hit the wall of their container they exert a (a)  

52.

In which container will there be greater pressure?

a)

A

b)

B

53.

Which diagram show the arrangement of particles in a balloon filled with air

a)

A

b)

B

c)

C

d)

D

54.

Both balloons are filled with an equal number of particles. In which balloon would there be greater pressure?

a)

A

b)

B

55.

Which of the following would increase gas pressure?

a)

Reducing the size of the container

b)

Decreasing the number of gas particles

c)

Reducing the temperature of the gas

56.

Which of the following would reduce gas pressure?

a)

Increasing the size of the container

b)

Increasing the number of gas particles

c)

Increasing the temperature of the gas

57.

If you climb a tall mountain what happens to the air pressure?

a)

It increases

b)

It decreases

58.

What happens to the pressure in a liquid as you go deeper?

a)

The pressure decreases

b)

The pressure increases

c)

The pressure becomes zero

d)

The pressure remains the same

59.

What is the pressure in a solid?

a)

Force applied on a unit area of the solid's surface

b)

Temperature of the solid

c)

Color of the solid

d)

Volume of the solid

60.

Which of the following is a non-contact force?

a)

Gravity

b)

Friction

c)

drag

d)

Magnetic

61.

Which of the following is an example of contact force?

a)

Friction

b)

Gravity

c)

Magnetism

d)

Tension

62.

What is the pressure exerted by a 500 N force on an area of 2 m^2?

a)

750 Pa

b)

1000 Pa

c)

250 Pa

d)

1500 Pa

63.

Where is the pressure greatest?

a)

At the surface of the ocean

b)

In the middle of the ocean

c)

At the bottom of the ocean

64.
What do we call the the amount of force exerted on a certain area?
a)
fluid
b)
pressure
c)
buoyant
65.

Water pressure decreases as depth increases

a)

false

b)

true

66.

Which of these animals would probably cause the greatest pressure on the ground?

a)

A large cow with big feet

b)

A large cow with small feet

c)

A baby cow with big feet

d)

A baby cow with small feet

67.
Look at the pressure triangle. How do we calculate the area?
a)
f ÷ a
b)
f x p
c)
p x f
d)
f ÷ p
68.

Forces are measured in....

a)

Kilograms

b)

Newtons

c)

Centimetres

d)

kg/N

69.

Forces are measured using a ….

a)

calculator

b)

Balance

c)

Ruler

d)

Newton meter

70.

Forces can make objects....

a)

Speed up or start

b)

Slow down or stop

c)

Change direction, turn and change shape.

d)

All of the above

71.

The tennis ball will move in which direction?

a)

Up

b)

Right

c)

Down

d)

Left

72.

Which forces are correct?

a)

up is weight, down is air resistance

b)

up is weight, down is friction

c)

up is air resistance, down is friction

d)

up is air resistance, down is weight

73.

 Pressure can be calculated using the equation:

a)

Pressure = Force ÷\div Area

b)

Pressure = Area  ÷\div Force

c)

Pressure = Force x Area

d)

Pressure = Force + Area

74.

Pressure is measured in ….

a)

newtons

b)

m/N2

c)

N/m2

d)

N/cm2

75.

Where is atmospheric pressure the lowest?

a)

seaside

b)

hill

c)

mountain

d)

cave

76.

A parachute slows down a sky diver because it increases...

a)

Air resistance

b)

Friction

c)

Drag

d)

All of the above

77.

Which of the three images represents the particles in a gas?

a)

A

b)

B

c)

C

78.

A slight problem with this diagram is that the particles in a real gas are actually...

a)

in a neat arrangement

b)

closer together

c)

further apart

d)

not really there

79.

What are the particles in a gas doing?

a)

Vibrating from side to side

b)

Drifting slowly in random directions

c)

Moving quickly in the same direction

d)

Moving quickly in random directions

e)

Not moving

80.

The particles in a gas move around quickly because they have lots of (a)  

81.

When particles collide with the walls of their container they cause pressure.

Which two of these would increase the pressure?

a)

Adding more particles

b)

Making the particles lighter

c)

Making the particles move faster

d)

Making the container larger

e)

Slowing the particles down

82.

When a gas is compressed the pressure increases because the particles collide with the container walls more...

(a)  

83.

The pressure in a balloon increases as the temperature rises.

Which of these is NOT a reason why?

a)

The gas particles hit the walls with more force

b)

There are more collisions with each cm2 of wall per second

c)

There are more particles in the box to hit each cm2 of wall

d)

On average, more force is applied to each cm2 of the wall

84.

When you breathe in, your chest expands and your diaphragm moves down. This causes your lungs to increase in volume. What will happen to the air pressure inside?

a)

It will increase

b)

It will decrease

c)

It will stay the same

85.

Write some sentences to explain why the balloon shrinks when placed in the ice-cold water. Use as many key words from the boxes as you can.

4 lines
86.

What is the equation to calculate average speed?

a)

average speed = distance/time

b)

average speed = time/distance

c)

average speed = time x distance 

d)

speed = distance/time 

87.
What is the equation to calculate time?
a)

time = average speed/distance

b)

time = distance/average speed 

c)

time = average speed x distance 

d)

time = distance x average speed

88.

A train travels 25 km in 0.5 hrs. How fast is the train going?

a)
25 miles/hr
b)
5 miles/hr
c)
125 km/hr
d)
50 km/hr
89.
A car travels 30 miles/hr for 3 hours, calculate the distance it will travel
a)
90 miles
b)
10 miles
c)
600 miles
d)
90 km
90.
A boat travels at 22 km/hr for 10 hrs, what distance will it travel?
a)
220 miles
b)
2.2 km
c)
220 km
d)
22 km
91.
What is the speed of a man who runs 10 miles in 1 hr?
a)
20 miles
b)
10 m/min
c)
10 miles/hr
d)
20 hrs
92.
A man runs at 10 m/min for 5 min, what distance will he run?
a)
10 miles
b)
10 m
c)
5 m
d)
50 m
93.
Dave runs a 400 m race with a speed of 4 m/s. What time will it take him to finish the race?
a)
400 minutes
b)
100 minutes
c)
100 seconds 
d)
.25 seconds 
94.
Which of the following is a unit of speed?
a)
km/hr
b)
hr
c)
km
d)
s
95.
Which of the following is a unit of time?
a)
km/hr
b)
hr
c)
km
d)
mi
96.
Which of the following is a unit of time?
a)
sec
b)
mi
c)
m/s
d)
km
97.
Mrs. Avery speed walked 2 miles in 10 minutes, what is her speed?
a)
0.2 miles/min
b)
2 miles/min
c)
20 miles/min
d)
40 miles/min
98.
Mr. Hoppe drives his race car for 4 hrs at 150 miles/hr. How far will he travel?
a)
600 km
b)
60 miles
c)
6 miles
d)
600 miles
99.
What is the speed of a car that travels 400 m in 20 minutes?
a)
20 miles/hr
b)
20 m/min
c)
800 m/min
d)
200 miles/hr
100.

A runner races in the 100 meter dash. It takes her 10 seconds to finish. What is her average speed?

a)

10 m/s

b)

1000 m/s

c)

100 seconds

d)

10 seconds

101.
Which of the following is a unit of time?
a)
sec
b)
mi
c)
m/s
d)
km
102.
Which of the following is a unit of speed ?
a)
sec
b)
mi
c)
m/s
d)
min
103.
What is speed?
a)
how far you go
b)
how much distance is covered over a period of time
c)
how fast you accelerate
d)
the change in the location of a object
104.
How would decreasing the time it takes you to run a certain distance affect your speed? Speed will...
a)
Increase
b)
Decrease
105.

How would you calculate the average speed of a student that is able to run 20 meters in 8 seconds?

a)

20 ÷ 8

b)

20 × 8

c)

8 ÷ 20

d)

8 - 20

106.

How would you calculate the average speed of a ball if it rolls a distance of 5 meters in a time of 10 seconds?

a)

5 ÷ 10

b)

5 × 10

c)

10 ÷ 5

d)

10 + 5

107.

30 seconds is equal to

a)

1 minute

b)

0.5 minute

c)

3 minutes

d)

2 minutes

108.

Distance =

a)

Time ÷ Speed

b)

Speed ÷ Time

c)

Speed x Time

d)

Time + Speed

109.

30 minutes is equal to

a)

1 hour

b)

0.5 hour

c)

3 hours

d)

2 hours

110.

Forces are measured in....

a)

Kilograms

b)

Newtons

c)

Centimetres

d)

kg/N

111.

Forces are measured using a ….

a)

calculator

b)

Balance

c)

Ruler

d)

Newton meter

112.

Forces can make objects....

a)

Speed up or start

b)

Slow down or stop

c)

Change direction, turn and change shape.

d)

All of the above

113.

Balanced forces produce...

a)

A change in movement

b)

No change in movement

114.

Friction is a force that always acts in the...

a)

same direction to movement

b)

different direction to movement

c)

opposite direction to movement

115.

The tennis ball will move in which direction?

a)

Up

b)

Right

c)

Down

d)

Left

116.

Which forces are correct?

a)

up is weight, down is air resistance

b)

up is weight, down is friction

c)

up is air resistance, down is friction

d)

up is air resistance, down is weight

117.

 Pressure can be calculated using the equation:

a)

Pressure = Force ÷\div Area

b)

Pressure = Area  ÷\div Force

c)

Pressure = Force x Area

d)

Pressure = Force + Area

118.

Pressure is measured in ….

a)

newtons

b)

m/N2

c)

N/m2

d)

N/cm2

119.

As depth is increased, what happens to the pressure in liquids?

a)

Increases

b)

Decreases

c)

Stays the same

d)

Halves

120.

Water pressure causes...

a)

Weight

b)

Air resistance

c)

Friction

d)

Upthrust

121.

Where is atmospheric pressure the lowest?

a)

seaside

b)

hill

c)

mountain

d)

cave

122.

If an object is accelering, the forces are.....

a)

Balanced

b)

Unbalanced

c)

doubled

123.

Friction is good because....

a)

It allows things to start

b)

It acts as brakes

c)

Both of the above

124.

A parachute slows down a sky diver because it increases...

a)

Air resistance

b)

Friction

c)

Drag

d)

All of the above

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