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TEST- Forces, Gravity, Friction and Air Resistance

Total questions: 50

Worksheet time: 38mins

Name
Class
Date
1.
What force holds the planets in motion around the sun?
a)
Magnetic
b)
Electrical
c)
Gravitational
d)
Air Resistance
2.

What force ultimately slows the roller coaster to a stop?

a)

Applied

b)

Normal

c)

Friction

d)

Gravitational

3.
Friction is a force that acts in an ___________ direction of movement.
a)
similar
b)
opposite
c)
parallel
d)
west
4.
A type of friction that occurs when air pushes against a moving object causing it to decelerate.
a)
surface area
b)
air resistance
c)
velocity
d)
gravity 
5.
The SI Unit of force is
a)
Pascal
b)
Meter/second
c)
Newton
d)
kg
6.
What type of force?
a)
Magnetic
b)
Gravitational
c)
Applied
d)
Normal
7.
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
8.

These forces are...

a)

Balanced

b)

Unbalanced

9.
If an object is not moving the forces acting upon it are _____________
a)
unbalanced
b)
weak
c)
balanced
d)
Hulk Smash!
10.

What is true about this picture?

a)

the forces are balanced

b)

the net force is 10N

c)

The net force is 3 N

d)

The net force is 7N

11.
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
12.
How will this object move? 
a)
It won't move. 
b)
It will move to the right. 
c)
It will move to the left. 
d)
It will move up. 
13.

Which of the following is an example of an unbalanced force?

a)
b)
c)
d)
14.

What is the force acting in the opposite direction of an object in motion called?

a)

Friction Force

b)

Gravity Force

c)

Normal Force

d)

Net Force

15.

How will this object move?

a)

The object will move to the left, as the forces are balanced.

b)

The object will move to the right, as the forces are unbalanced.

c)

The object will move to the left, as the forces are unbalanced.

d)

The object will move to the right, as the forces are balanced.

16.
Are forces balanced or unbalanced when a car is moving at a constant speed in a straight line?
a)
Balanced
b)
Unbalanced
17.
Are forces balanced or unbalanced when a marble rolls down a ramp?
a)
Balanced
b)
Unbalanced
18.
A girl is pushing a cart by herself with a force of 7 N. What will happen if a boy begins to help her and their combined force is 17 N?
a)
The cart will speed up.
b)
The cart will slow down.
c)
The cart will move at a constant speed in a straight line.
d)
The cart will fly to never never land!
19.
What does friction produce?
a)
light
b)
sound
c)
heat
d)
gravity
20.
What are the units on the force due to friction?
a)
none
b)
Newtons
c)
meters
d)
kilograms
21.
Friction is a force that acts in an ___________ direction of movement.
a)
similar
b)
opposite
c)
parallel
d)
west
22.
The amount of friction depends on the weight of the objects pressing together.
a)
True
b)
False
23.
A type of friction that occurs when air pushes against a moving object causing it to decelerate.
a)
surface area
b)
air resistance
c)
velocity
d)
gravity 
24.
When two surfaces rub, the irregularities of one surface get caught on those of the other surface?
a)
True
b)
False
25.
Rougher surfaces have ...
a)
greater friction
b)
less friction
c)
the same level of friction
26.

Friction is a

a)

CONTACT force

b)

NONCONTACT force

27.

Gravity is a

a)

CONTACT force

b)

NONCONTACT force

28.

Which of the following statements are true?

a)

Smooth surfaces produce more friction than rough surfaces.

b)

Rough surfaces produce more friction than smooth surfaces.

29.

Which of the following statements are true?

a)

The more friction there is between two objects, the more force is needed to move either object.

b)

The less friction there is between two objects, the more force is needed to move either object.

30.

Which type of energy is released by rubbing two sticks together?

a)

light

b)

heat

c)

sound

d)

electrical

31.

A body which offers very little resistance to the flow of air or water around it, is called:

a)

trimlined shape

b)

streamlined shape

c)

streaklined shape

d)

steamlined shape

32.

The frictional force exerted by a fluid is called-

a)

brag

b)

drab

c)

drag

d)

tread

33.

The friction between two surfaces does not depend on one of the following. This one is:

a)

amount of surface area of the two objects which is in contact with each other.

b)

weight of the object which tends to move on the surface of other object

c)

degree of smoothness of surfaces of two objects in contact with each other.

d)

degree of roughness of surfaces of two objects in contact with each other

34.
Which objects have a STRONG force of gravity?
a)
Objects with GREATER mass, like elephants
b)
Objects with LESS mass, like mice
35.
As distance between two objects increase the pull of gravity 
a)
Increases
b)
Decreases
c)
Stays the same
36.
The force of gravity acting on an object is the object's ______.
a)
mass
b)
matter
c)
weight 
d)
friction 
37.
The amount of matter in an object is 
a)
pressure
b)
weight
c)
mass
d)
force
38.
Which of the following never changes no matter where in the universe?
a)
weight
b)
force
c)
mass
d)
pounds
39.
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
40.
Two factors effecting the magnitude of the force of gravity between 2 objects are...
a)
mass and distance 
b)
mass and matter
c)
distance and weight 
d)
weight and mass
41.
As mass increases, what happens to gravitational force?
a)
increases
b)
decreases
c)
stays the same
d)
i don't know
42.
What force causes objects falling near Earth's surface to slow down?
a)
Gravity
b)
Air Resistance
c)
Centripetal Force
d)
Newtons
43.
If a bowling ball and a feather were dropped at the same time, in a room with no air resistance (vacuum), which object will hit the ground first?
a)
Bowling Ball
b)
Feather
c)
Both would hit at the same time
d)
Neither one would hit the ground because air is what pushing things down.
44.
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 
45.
The scientific unit of weight is
a)
Kg
b)
N
c)
pounds
d)
Kgm/s
46.
If an object mass =30 Kg on the Earth, what would be it's weight on Earth?
a)
30 N
b)
300 kg
c)
3000N
d)
300 N
47.

What is missing?

a)

D

b)

N

c)

W

d)

L

48.

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

49.

Another name for air resistance is...

a)

Buoyancy

b)

Streamline

c)

Gravity

d)

Drag

50.

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

a)

Less

b)

More

c)

Longer

d)

Quicker

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