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M2 Revision : force, Friction, Bouancy

Total questions: 79

Worksheet time: 1hrs 16mins

Name
Class
Date
1.

A ____________ is a push or a pull on an object.

a)

Chemical

b)

Force

c)

Magnet

d)

Gravity

2.

Two forces on an object are in the same direction. How do we calculate the resultant force?

a)

Take away one from the other

b)

Multiply them

c)

Divide one by the other

d)

Add them together

3.

Two forces on an object are in opposite directions. How do we calculate the resultant force?

a)

Divide one by the other

b)

Multiply them

c)

Minus one from the other

d)

Add them together

4.

What are balanced forces?

a)

Forces of the same size, in opposite directions

b)

Forces of the same size, in the same direction

5.

What is the force that pulls us towards the Earth?

a)

Gravity

b)

Tension

c)

Friction

d)

Air Resistance

6.
Two features of a vector?
a)
Size and direction
b)
Speed and distance
c)
Quantity and units
d)
Amount and magnitude
7.

The unit of force is...

a)

m/s

b)

m

c)

N

d)

kg

8.

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.

9.

How will this object move?

a)

It won't move.

b)

It will move to the right.

c)

It will move to the left.

10.
Balanced or Unbalanced?
a)
Balanced 
b)
Unbalanced
11.

What is the resultant force?

a)

40 N, Left

b)

0 N, Balanced

c)

400 N, Right

d)

40 N, Right

12.

What is the resultant force?

a)

400 N, Up

b)

400 N, Down

c)

800 N, Up

d)

800 N, Down

13.

What is the resultant force?

a)

30 N, Left

b)

25 N, Right

c)

5 N, Left

d)

55 N, Right

14.

What is the resultant force?

a)

10 N

b)

0 N

c)

25 N

d)

1 N

15.

What is the resultant force?

a)

17 N, Left

b)

6N, Right

c)

None of the above

16.

What is the resultant force?

a)

40N, Left

b)

40N, Right

c)

0N, Balanced

d)

75N, Right

17.

What is the resultant force?

a)

5000 N, Right

b)

4000 N, Right

c)

40 N, Left

d)

4000 N, Left

18.
Oil between machine parts would be an example of which type of friction?
a)
static
b)
sliding
c)
fluid
d)
rolling
19.
Friction is a force that acts in an ___________ direction of movement.
a)
similar
b)
opposite
20.
Objects balanced on Timmy's head experiences-
a)
Rolling Friction
b)
Sliding Friction
c)
Fluid Friction
d)
Static Friction
21.
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 
22.
Which type of friction occurs when solid surfaces slide over each other?
a)
rolling
b)
static
c)
sliding
d)
fluid
23.
What force squeezes material together?
a)
Friction
b)
Compression
c)
gravity
d)
none of the above
24.
 What is the unit called that measures force?
a)
weight
b)
meter
c)
Newton
d)
kilogram
25.

What type of force is Spiderman using to hold himself off the ground?

a)

friction

b)

tension

c)

gravity

d)

normal

26.
What force ultimately slows the roller coaster to a stop?
a)
Applied
b)
Normal
c)
Friction
d)
Magnetic
27.
friction is a force that acts 
a)
in the same direction as the motion
b)
opposite to the direction of the motion
c)
opposite to the applied forces
d)
the same direction as the applied force
28.
There is very little friction between ____________ or slippery surfaces.
a)
smooth
b)
rough
c)
hard
d)
soft
29.
What is the net force?
a)
10 N
b)
0 N
c)
25 N
d)
1 N
30.

Which slide would you be able to go faster down?

a)
b)
31.

This picture is showing _________.

a)

a balanced force

b)

an unbalanced force

32.

In the picture above, the magnet is pick up iron filings. This is an example of _________.

a)

a noncontact force

b)

a contact force

33.

Which of the following has the least effect on this skydiver?

a)

friction

b)

gravity

c)

mass

d)

inertia

34.

Is this an example of a balanced or unbalanced force?

a)

Balanced force

b)

Unbalanced force

c)

I don't know

35.

In this force diagram, which arrow is representing Friction?

a)

A

b)

B

c)

C

d)

D

36.

How do you know if this object is balanced?

a)

It's not balanced; it's Net Force is 14 N

b)

It is balanced because its Net Force is 0 N.

c)

It's not balanced; it's Net Force is 10 N left and 4 N up.

d)

I don't know how to tell.

37.

What is the net force?

a)

3 N

b)

3 N, right

c)

17 N, right

d)

3 N, left

38.
What type of force is shown in the picture?
a)
The Cat force
b)
Star Wars Force
c)
Unbalanced force
d)
Balanced  force
39.

The unit of force is

a)

m/s

b)

m/s2

c)

Newton

d)

kg

40.
Wheels of a shopping cart experience-
a)
Rolling Friction
b)
Sliding Friction
c)
Fluid Friction
d)
Static Friction
41.
Friction is a force that acts in an ___________ direction of movement.
a)
similar
b)
opposite
c)
parallel
d)
west
42.

When we rub our hands together _________.

a)

frictional force works between them

b)

energy is released

c)

our hands become warm

d)

all off the above

43.
What is the unit of measurement for pressure?
a)
pascal
b)
grams
c)
milliters
d)
meters
44.
Force divided by the area it is applied over is 
a)
mass
b)
density
c)
pressure
d)
volume 
45.
Compared to a man standing on a tall mountain, a man standing at sea level 
a)
has less atmospheric pressure on him 
b)
has more atmospheric pressure on him 
c)
weighs less 
d)
has more mass 
46.
What force causes the wood to float 
a)
weight
b)
density
c)
buoyant
d)
gravity
47.
What is buoyant force?
a)
An upward force exerted by fluids on an object.
b)
An downward force exerted by fluids on an object.
48.
What does buoyant mean?
a)
float
b)
push
c)
flying, yeah!!!!!!
d)
sink
49.
A brick weighs the most in.......
a)
air
b)
water
c)
Maple Syrup
50.
An empty water bottle floating on the water is an example of....
a)
positive buoyancy
b)
negative buoyoncy
51.
A water bottle filled with stones and sinking in the water is an example of.......
a)
negative buoyancy
b)
positive buoyancy
52.

Would this object float or sink?

a)

Float

b)

Sink

53.

Life jackets help people (and dogs) stay buoyant in water.

a)

False

b)

True

54.

Buoyancy is:

a)

When an object sinks in liquid

b)

The ability to float in some liquid material

55.

Would this object float or sink?

a)

Float

b)

Sink

56.

Does saltwater make an egg float or sink?

a)

Sink

b)

Float

57.

The amount of matter in an object is ____.

a)

mass

b)

volume

c)

density

d)

buoyancy

58.

The unit used to measure mass is

a)

cubic centimeters (cm3 )

b)

milliliters (mL)

c)

g/cm3

d)

grams (g)

59.

How much space an object take up is its _______________.

a)

volume

b)

mass

c)

density

d)

buoyancy

60.

The amount of mass in a given volume is _________.

a)

Mass

b)

Volume

c)

Density

d)

Buoyancy

61.

An upward force that a displaced fluid exerts on an object_____.

a)

Mass

b)

Volume

c)

Density

d)

Buoyant Force

62.

When atoms start to move slower, get closer together and become more dense, what has happened to the temperature?

a)

The temperature has gone up.

b)

The temperature has gone down.

c)

There was no change in the temperature.

63.

If an object that weighs 100 pounds is thrown in water and displaces 80 pounds of water, what will it do?

a)

If will float

b)

It will sink

c)

It will be buoyed up.

64.

If an object has a volume of 10 mL and a mass of 20 g, what is its density?

a)

.5 g/mL

b)

200 g/mL

c)

2 g/mL

65.

Which tool can we use to find the mass of an object?

a)

Balance

b)

Beaker

c)

Graduated Cylinder

d)

Ruler

66.

Which equation below is used to find density?

a)

Length times width times height

b)

Mass divided by volume

c)

Radius squared times Pi times height.

67.

The kinetic theory of matter states

a)

All objects are made of matter.

b)

The atoms in matter will stop moving if you get them cold enough.

c)

The atoms in matter are always in motion.

68.

Which of the following is not a fluid?

a)

Solids

b)

Liquids

c)

gasses

69.

How many millilters would 15 cubic centimeters be?

a)

5

b)

10

c)

15

d)

20

70.
Pressure at the bottom of the ocean is greatest because:
a)
The water is most dense at the bottom.
b)
The water is least dense at the bottom.
c)
The water is buoyant at the bottom.
71.
If the mass of an object is greater than the buoyant force, the object will:
a)
Float
b)
Sink
72.

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

a)

increases

b)

decreases

c)

stays the same

73.
Density is defined as...
a)
Centimeters cubed per mass of substance
b)
Mass per unit volume of a substance
c)
Flow rate of a substance
74.
Which liquid is the least dense?
a)
oil
b)
water
c)
syrup 
d)
plastic bottle
75.

The upward force exerted by a fluid is called the...

a)

buoyancy force

b)

density force

c)

fluidity force

d)

normal force

76.

_______ pushes an ice cube to the top of a glass of water.

a)

Buoyant force

b)

a sinking object

c)

Density

d)

Compressed air

77.

A block of metal is thrown into a lake. What happens to the buoyant force as it sinks deeper in the water?

a)

Increases

b)

Decreases

c)

remains the same

d)

increases and then decreases

78.

The magnitude of the buoyant force is equal to the weight of fluid displaced by the object _____.

a)

for every object submerged partially or completely in a fluid

b)

only for an object that floats

c)

only for an object that sinks

d)

for no object submerged in a fluid

79.

A 5 N stone is dropped in a lake and it sinks. Which of the relationships below is true for the buoyant force on the stone?

a)

𝐹B= 0

b)

𝐹B=5𝑁

c)

𝐹B<5𝑁

d)

𝐹B>5𝑁

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