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Worksheets

Forces

Total questions: 79

Worksheet time: 2hrs 59mins

Name
Class
Date
1.

What is the unit to MEASURE force?

a)

Kilogram

b)

Meter

c)

Pounds

d)

Newton

2.
What is the net force?
a)
10 N
b)
0 N
c)
25 N
d)
1 N
3.
What will cause an object to move?
a)
Applied forces
b)
Balanced forces
c)
Unbalanced forces
4.

When an object is moving, friction acts in the _______ direction as the motion.

a)

perpendicular

b)

same

c)

opposite

d)

precise

5.

A type of friction that occurs when air pushes against a moving object it to decelerate.

a)

surface area

b)

air resistance

c)

velocity

d)

gravity

6.

A contact force is from

a)

objects physically touching

b)

far apart objects

c)

not touching object

d)

always a pull

7.

The force between the phone and the mount is a

a)

contact force

b)

non-contact force

8.

The force that causes objects with mass to attract one another.

a)

Weight

b)

Gravity

c)

Mass

d)

Magnetism

9.

The gravitational attraction between two objects would increase if both masses are –

a)

increased, and the distance between them is increased.

b)

increased, and the distance between them is decreased.

c)

decreased, and the distance between them is decreased.

d)

decreased, and the distance between them is increased.

10.

Why do planets orbit the Sun?

a)

The Sun is the only celestial object that has a gravitational pull.

b)

The Sun’s chemical composition makes it attract planets.

c)

Only celestial bodies that emit light, like the Sun, can be at the center of an orbit.

d)

The Sun is the most massive object in our solar system, so it exerts the greatest gravitational pull.

11.
A person would weigh less on on the Moon than on the Earth because . . .
a)
Moon has more mass, and therefore more gravity
b)
Moon has less mass, and therefore more gravity
c)
Moon has more mass, and therefore less gravity
d)
Moon has less mass and therefore less gravity
12.

What can force do to an object?

a)

Accelerate an object

b)

Slow down an object

c)

Have the object remain in place

d)

Have the object change shape

e)

All of the above

13.
With unbalanced forces, the object will move in the direction of the _______ force.
a)
larger 
b)
smaller 
c)
equal 
14.
Name the missing force...
a)
frictional force
b)
weight force
c)
thrust
d)
buoyant force
15.
Name the missing force...
a)
normal force
b)
applied force
c)
frictional force
d)
tension force
16.

In which scenario is the net force 2 N up and 2 N right?

a)

1

b)

2

c)

3

d)

4

17.
The sum of all forces acting on an object and direction
a)
Contact Force
b)
Balanced Force
c)
Unbalanced Force
d)
Net Force
18.
Are forces balanced or unbalanced when a car is moving at a constant speed in a straight line?
a)
Balanced
b)
Unbalanced
19.
Are forces balanced or unbalanced when a marble speeds up rolling down a ramp?
a)
Balanced
b)
Unbalanced
20.
Name the missing force...
a)
weight force
b)
normal force
c)
applied force
d)
frictional force
21.
Name the missing force...
a)

applied

b)

force of gravity

c)
tension force
d)
drag
22.
Name the missing force...
a)
tension force
b)
gravitational force
c)
normal force
d)
applied force
23.

A leftward force is applied to a crate to push it across the floor at a constant speed. Which is the correct force diagram?

a)
b)
c)
d)
24.

A rightward force is applied to a dresser to accelerate it to the right across the bedroom floor.

a)
b)
c)
d)
25.

A downward-moving skydiver who has just opened the parachute is slowing down.

a)
b)
c)
d)
26.

Mass is the measure of how much ______ is in an object.

a)

Density

b)

Weight

c)

Matter

d)

Gravity

e)

Force

27.

A student drops a basketball onto the floor. According to Newton's 3rd law, why does the ball bounce?

a)

The student dropped the ball

b)

The earth pulls the ball down

c)

The ball presses down on the floor

d)

The floor presses up on the ball

28.

Because of inertia, a resting object ________.

a)

will remain at rest

b)

will move at a constant speed

c)

will eventually move

d)

is unbalanced

29.

______________ is how heavy an object is. It is determined by the pull of gravity

a)

Weight

b)

Mass

c)

Normal Force

d)

Acceleration

30.
The scientific unit of weight is
a)
Kg
b)
N
c)
pounds
d)
Kgm/s
31.
The scientific unit for mass is
a)
Kg
b)
N
c)
pounds
d)
ounces
32.

What is the SI unit used to measure weight?

a)

pounds

b)

grams

c)

newtons

d)

friction

33.
If the mass of an object on Earth is 18 grams, what would the mass of the same object be on the Moon?
a)
18 g
b)
4 g
c)
0 g 
d)
32 g 
34.
A child has a mass of 30 Kg on Earth. If the gravity on Moon is one sixth that of the Earth what is the mass of the child on Moon? 
a)
30 Kg
b)
180 Kg
c)
5 Kg
d)
0 Kg
35.
The amount of matter in an object is 
a)
pressure
b)
weight
c)
mass
d)
force
36.

Find the weight of a 5kg rock on Mercury with a gravitational pull of 3.59m/s/s.

a)

5kg

b)

17.95N

c)

1.39N

d)

0.718N

37.

A squirrel has a weight of 4.9 N. What is his Mass if he is running on the ground?

a)

4.9 kg

b)

9.8 N/kg

c)

0.5 kg

d)

5.0 kg

38.

A girl weighs 300 N what is her mass here on Earth?

a)

40.8 kg

b)

41 kg

c)

30.6 kg

d)

300 N

39.
Name the missing force...
a)
tension force
b)
gravitational force
c)
normal force
d)
applied force
40.

The force that keeps objects on top of surfaces instead of letting them sink into the surface is known as:

a)

normal

b)

abnormal

c)

static

d)

inertia

41.

In a force diagram the size/length of the arrow tells you this about the force:

a)

the strength of the force

b)

the distance of the force

c)

the direction of the force

42.

Which force diagram matching the following description:

You hold a ball in your hand.

a)

(a)

b)

(b)

c)

(c)

d)

(d)

43.

Which force diagram matching the following description:

A ball is falling down.

a)

(a)

b)

(b)

c)

(c)

d)

(d)

44.

Which force diagram matching the following description:

You are throwing a ball (still in your hand) straight up.

a)

(a)

b)

(b)

c)

(c)

d)

(d)

45.

Which force diagram matching the following description:

You are lifting a ball up at a constant pace.

a)

(a)

b)

(b)

c)

(c)

d)

(d)

46.
Wheels on a skateboard most likely experiences-
a)
Rolling Friction
b)
Sliding Friction
c)
Fluid Friction
d)
Static Friction
47.
Sally experiences-
a)
Rolling Friction
b)
Sliding Friction
c)
Fluid Friction
d)
Static Friction
48.
Wheels of a shopping cart experience-
a)
Rolling Friction
b)
Sliding Friction
c)
Fluid Friction
d)
Static Friction
49.
Swimming fish experience-
a)
Rolling Friction
b)
Sliding Friction
c)
Fluid Friction
d)
Static Friction
50.
Which type of friction occurs when an object moves through a liquid or gas?
a)
sliding
b)
fluid
c)
static
d)
rolling
51.
Which type of friction occurs when solid surfaces slide over each other?
a)
rolling
b)
static
c)
sliding
d)
fluid
52.
Friction is a force that acts in an ___________ direction of movement.
a)
similar
b)
opposite
c)
parallel
d)
west
53.
A type of friction that occurs when air pushes against a moving object causing it to negatively accelerate
a)
surface area
b)
air resistance
c)
descent velocity
d)
gravity 
54.

Which type of friction is shown in the picture?

a)

rolling

b)

fluid

c)

static

d)

sliding

55.

Sanding wood with sandpaper will ______ the friction.

a)

increase

b)

decrease

56.

Fluid friction happens with objects moving through ______________ or ___________________.

a)

gases or liquids

b)

solids or liquids

c)

gases or solids

57.

Newton's 2nd Law says that the acceleration of an object depends on its _____ and _____.

a)

Force

b)

Gravity

c)

Weight

d)

Mass

58.

Which of Newton's Laws explains a rocket's movements during launch?

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

d)

Newton's 4th Law

59.

What is Newton's 2nd Law of Motion?

a)

Force = Mass x Acceleration

b)

An object at rest stays at rest unless acted on by an unbalanced, external force

c)

What goes up must come down

d)

For every action, there is an equal and opposite reaction.

60.

True or False: objects with greater mass require more force to accelerate when compared to objects with less mass.

a)

True

b)

False

61.

You are testing a slingshot with different objects. You try it with a mini-marshmallow, a quarter, and a large marble. If you pull it back with the same force each time, which object should leave the slingshot with the most acceleration?

a)

Marshmellow

b)

Quarter

c)

Marble

62.

When you are riding in a car and the car suddenly stops, your body continues to go forward.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

63.

A swimmer pushes water back with her arms, but her body moves forward.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

64.

As an ice skater pushes harder with leg muscles, the ice skater begins to move faster.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

65.

Rocky, age 12, and Parker, age 20, skip pebbles on the pond. The pebbles Parker throw go farther and faster than Rocky's.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

66.

A child is pulling a sled and stops. The sled kept moving and hit the child.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

67.
What is the largest planet?
a)
Jupiter
b)
the moon
c)
Saturn
d)
the Sun
68.
What planet is closest to the sun?
a)
Mercury
b)
Mars
c)
Venus
d)
Sun
69.
Have humans walked on any other planet?
a)
Yes
b)
No
70.
What is the sixth planet from the sun?
a)
Saturn
b)
Uranus
c)
Neptune
d)
Asteroid Belt
71.

Order the planets from largest to smallest:

a)

Jupiter

b)

Neptune

c)

Venus

d)

Mercury

1)
2)
3)
4)
72.

On which celestial object (outer space) would your mass be the greatest?

a)

Earth

b)

Jupiter

c)

Sun

d)

Your mass doesn't change on different celestial objects

73.
On which celestial object would you weigh the most?
a)
Earth
b)
Jupiter
c)
Sun
d)
You would weigh the same on all celestial objects
74.

Why do all of the planets orbit the sun rather than Earth?

a)

the sun has more mass

b)

the sun is a star

c)

the Earth is heavier

d)

the sun is in the middle of the milky way

75.

After the 60 seconds, the parachutist pulls the cord and opens her parachute.

Explain how the parachute reduces the speed of the parachutist when it is just opened.

a)

The friction force decreases

b)

The weight force decreases

c)

The weight force increases

d)

The friction force increases

76.

Terminal velocity is...

a)

the consistent velocity attainable by an object as it falls through a medium

b)

the average velocity attainable by an object as it falls through a medium

c)

the highest velocity attainable by an object as it falls through a medium

d)

the lowest velocity attainable by an object as it falls through a medium

77.
In a normal environment, why does a bowling ball and feather hit the ground at different times when dropped from the same height?
a)
They don't; they hit the ground at the same time.
b)
One is more dense than the other.
c)
One is heavier than the other.
d)
Air resistance 
78.

An object travelling at terminal velocity moves at a steady speed.

a)

True

b)

False

79.

What are comets made of?

a)

mud, rock, water

b)

ice and dust

c)

rock

d)

gas and dust

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