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Year 7 Forces

Total questions: 40

Worksheet time: 29mins

Name
Class
Date
1.

In science, Force is DEFINED as...

a)

A push or pull

b)

A hop, skip and jump

c)

A push, pull or twist

d)

Gravity and friction

2.

Which of the forces in this image is the smallest?

a)

A

b)

B

c)

C

d)

D

e)

E

3.

In this force diagram, which way will the van move?

a)

Upward

b)

To the left

c)

To the right

d)

Downward

4.

This book is resting on the table. Which two forces are acting on the book?

a)

Gravitational up and electrical down

b)

Gravitational down and table up

c)

Magnetic up and electrical down

d)

Friction down and gravitational down

5.

In which force diagram would the car slow down?

a)

A

b)

B

c)

C

6.

Which of the following is NOT a way to reduce friction?

a)

Use balls or wheels

b)

Spray the surface with oil or grease

c)

Hovering an object so the surfaces don't touch

d)

Add more weight

7.

What are the forces acting on a plane in flight?

a)

Wing, Cabin, Wheels, Engine

b)

Lift, Thrust, Acceleration, Mass

c)

Lift, Thrust, Drag, Weight

d)

Buoyancy, Drag, Air Resistance, Surface Tension

8.

I am a contact force that can only cause an object to slow down

a)

Thrust

b)

Friction

c)

Tension

d)

Magnetic

9.
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.
10.
Why is person B having a hard time moving down the hill?
a)
Person B has more friction than person A.
b)
Person B has the same friction as person A.
c)
Person B is out of shape.
d)
Person B has less friction has person A.
11.
A force that slows or stops motion when objects rub together.
a)
Friction
b)
Push
c)
Pull
d)
Magnetism
12.
What pulls a ball back to earth?
a)
Gas
b)
Gravity
c)
Friction
d)
Molecules
13.
What is the unit for FORCE? 
a)
N (Newtons)
b)
lbs (pounds)
c)
g (grams)
d)
m/s (meters per second)
14.
The tendency of an object to stay in motion or at rest is called 
a)
velocity
b)
acceleration
c)
speed
d)
inertia
15.
Which force produces a change in motion?
a)
unbalanced force
b)
balanced force
c)
gravitational force
d)
frictional force
16.
For every action, there is an equal and opposite reaction.
a)
Newton's
1st
Law of Motion
b)
Newton's
2nd
Law of Motion
c)
Newton's
3rd
Law of Motion
17.
An automobile you are riding in suddenly stops, but you continue to go forward.
a)
Newton's
1st
Law of Motion
b)
Newton's
2nd
Law of Motion
c)
Newton's
3rd
Law of Motion
18.
When a cannon fires a cannonball we observe Newton's third law. Which force is the reaction force?
a)
The cannon moving forward
b)
The cannonball moving forward
c)
The cannon moving backward
d)
The cannonball moving backward
19.
A 20 kg bike accelerates at 10 m/s2.  what was the force?
a)
25 Newtons
b)
20 Newtons
c)
200 Newtons
d)
10 Newtons
20.

A cat sitting on couch, a pencil on desk and a car at rest are all example of..

a)

Balanced Force

b)

Unbalanced Force

c)

Gravity

d)

Motion

21.
What is Newton's First Law known as? The Law of
a)
Friction
b)
Mass
c)
Inertia
d)
Gravity
22.
Which type of force(s) will cause a change in an object's motion?
a)
gravity
b)
zero net force
c)
balanced forces
d)
unbalanced forces
23.
What is Newton's First Law
a)
F=ma
b)
Every action has an equal and opposite reaction
c)
An object at rest stays at rest, an object in motion stays in motion. 
d)
Friction 
24.
Newton's third law states that any action will have a(n) _______ and ______ reaction
a)
Equal and similar
b)
Equal and opposite
c)
Equal and different
d)
Greater and opposite
25.
According to Newton's second law, if you increase the force applied to an object :
a)
it accelerates more
b)
it doesn't move
c)
you get more inertia
d)
it decelerates
26.
Matt measured a small rubber ball and made 3 other balls of the same diameter from lead, foam, and wood. Which has the greatest inertia?
a)
rubber ball
b)
lead ball
c)
foam ball
d)
wood ball
27.
According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will
a)
remain in motion.
b)
eventually come to a stop.
c)
change its momentum.
d)
accelerate.
28.

This person bought coffee and put it on the seat next to them. If they stopped quickly and the coffee flew forward which law would that represent?

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

29.
A magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
30.

The formula applied to Newtons 2nd law of motion is 

a)

F = m x a

b)

E = mc

c)

F = c x A

d)

A + B = C

31.

If you stand on the back of a moving truck and jump up in the air, what will happen?

a)

You will fall off the truck

b)

You will land back on the truck in the same position.

c)

You will crash in to the cabin of the truck

d)

You won't be able to jump because the truck is moving

32.

The role of airbags in a car is to

a)

Absorb the force over a greater distance

b)

Increase the force applied to the airbag

c)

Absorb the force over a shorter time

d)

Create an unbalanced force

33.

An aeroplane has wings that are in the shape called

a)

aerofoil

b)

sleek

c)

aerodynamic

d)

streamlined

34.

An aeroplane relies on what two forces to take off?

a)

Lift and thrust

b)

Friction and thrust

c)

Lift and gravity

d)

Thrust and air resistance

35.

The two forces opposing an aeroplane are

a)

Gravity and wind resistance

b)

Gravity and aerofoil

c)

Thrust and friction

d)

Surface tension and friction

36.

You are riding your skate board and you run into the gutter and fly off into the nature strip. The unbalanced force was caused by:

a)

Your weight

b)

Gravity

c)

Hitting the gutter

d)

Falling off the skateboard

37.

In science forces are represented by

a)

an arrow

b)

curved lines

c)

circles and squares

d)

lines coming from the centre of gravity

38.

Forces that involve air or water are called

a)

fluid dynamics

b)

motion dynamics

c)

air and water resistance

d)

force dynamics

39.

In order for an aeroplane to take off the area of high pressure must be:

a)

Applied to the whole outside of the aeroplane

b)

Under the wing

c)

On top of the wing

d)

It must be low pressure

40.

If the wind speed is fast the pressure is _______ and if the wind speed is slow the pressure is _________.

a)

low : high

b)

high : low

c)

low : low

d)

high : high

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