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Revision: Mass and Weight

Total questions: 111

Worksheet time: 39mins

Name
Class
Date
1.
What is gravity?
a)
A force
b)
Energy
c)
A push
d)
All of them
2.
Without gravity we would________. 
a)
Float away
b)
Stay in the ground
c)
Nothing would happen.
d)
I don't know
3.
Why a ball falls to the ground?
a)
Earth's force of gravity is GREATER than the ball's, so the ball gets attracted to the ground. 
b)
Earth's force of gravity is LESS than the ball's, so the ball gets attracted to the ground. 
4.
Which has more mass, Earth or the Moon?
a)
Earth
b)
Moon
c)
The same
5.
Which has a STRONGER force of gravity, Earth or the Moon?
a)
Earth
b)
Moon
6.
Where can you jump higher, on Earth or on the Moon?
a)
Earth
b)
Moon
7.
Any object with mass has gravity.
a)
True
b)
Sometimes
c)
False
d)
Never
8.
Gravity attracts all objects towards one another.
a)
False
b)
True
c)
It depends
9.
The law of universal gravitation is credited to whom?
a)
Einstein
b)
Galileo
c)
Darwin
d)
Newton
10.
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
11.

Pushing a child on a swing is easier than pushing an adult on the same swing because the adult has more mass and requires more force to accelerate.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

12.

A pupil leaves a pencil on a desk and the pencil stays in the same spot until another pupil picks it up.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

13.

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

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

14.
What can a force do?
a)
all of the above
b)
start a motion
c)
stop a motion
d)
change the direction of the motion
15.
You hit a wall with a stick.  The equal but opposite reaction is _____
a)
the wall pushes against you
b)
the stick pushes against you
c)
you push against the stick
d)
the wall pushes against the stick
16.

A person is pushed forward into their seat belt when a car stops quickly. Which law is this?

a)

1st

b)

2nd

c)

2nd and 3rd

d)

3rd

17.
An object at rest will _______ if no outside forces are applied.
a)
stay at rest
b)
increase velocity
c)
decrease mass
d)
fall to the ground
18.

Which law explains why a person in a car slides to the right when going through a very sharp left turn on the highway.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

19.

An empty truck and a fully loaded truck are next to each other at a traffic light. When the light turns green, the lighter truck increases speed more quickly. Which law best explains this situation?

a)

Newton's 1st law

b)

Newton's 2nd law

c)

Newton's 3rd law

20.
Which is the best example of Newton's First Law of Motion?
a)
a basketball thrown in the air falls to the ground
b)
a soccer ball remains motionless until it is kicked by a player
c)
a baseball player swings at an approaching ball
d)
an ice skater pushes back from a wall and moves backwards
21.
As the wheels of a train push down on the track, the track pushes back against the wheels. Which of Newton's laws is used to explain these forces.
a)
An object at rest tends to stay at rest unless acted upon by an unbalanced force.
b)
The net force of an object is its mass times its acceleration.
c)
For every action, there is an equal and opposite reaction.
d)
Any 2 objects exert a gravitational force of attraction on each other.
22.
Which example best explains Newton's Third Law of Motion?
a)
When a glass slid across a table, it spilled water when it stopped suddenly.
b)
An engine used less work to move a lighter car than when it moved a heavier car.
c)
When you sit on a chair, your body exerts a downward force on the surface of the chair, while the chair exerts an equal and upward force on your body. 
23.
A person steps out of the boat and onto the dock.  As the person moves forward onto the dock, the boat moves backward.  Which statement best describes the backward motion of the boat as the person steps forward?
a)
For every action there is an equal and opposite reaction.
b)
Every mass exerts a force on every other mass.
c)
An object at rest tends to stay at rest.
d)
Friction opposes the motion of an object.
24.
Who invented the 3 Laws of Motion?
a)
Sir Francis Bacon
b)
Sir Isaac Newton
c)
Johannes Kepler
d)
Galileo Galilei
25.

Weight is _________.

a)

the quantity of matter in an object.

b)

the measure of an object's inertia.

c)

the force exerted by gravity on an object's mass.

d)

equal to the mass of an object.

26.

Weight is constant.

a)

True

b)

False

27.

Mass is often constant for a given object.

a)

True

b)

False

28.

A person accelerating upward in an elevator would experience a temporary __________ in __________.

a)

increase, weight

b)

decrease, weight

c)

increase, mass

d)

decrease, mass

29.
The force of gravity acting on an object is the object's ______.
a)
mass
b)
matter
c)
weight 
d)
friction 
30.
The amount of matter in an object is 
a)
pressure
b)
weight
c)
mass
d)
force
31.
The scientific unit of weight is
a)
Kg
b)
N
c)
pounds
d)
Kgm/s
32.
The scientific unit for mass is
a)
Kg
b)
N
c)
pounds
d)
ounces
33.
The weight of an object _________ as it moves away from the center of Earth.
a)
increases
b)
stays the same
c)
triples
d)
decreases
34.
The mass of an object ___________ as it moves away from the center of Earth
a)
stays the same
b)
decreases
c)
increases
d)
doubles
35.
As an object's mass increases, its gravitational pull will ____________.
a)
decrease
b)
increase
c)
stay the same
d)
get weaker
36.
If an object has more mass, then it will
a)
weigh more.
b)
weigh less.
c)
weigh the same as an object with less mass.
d)
always have more volume than an object with less mass.
37.
What is the SI unit used to measure force? 
a)
pounds 
b)
grams 
c)
newtons 
d)
friction
38.
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 
39.
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
40.
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
41.
If the mass of an object is 1000 kg on Earth, what is it's mass on the moon?
a)
10kg
b)
100kg
c)
1000kg
d)
10,000kg
42.
The force of gravity on Jupiter is a little more than 2 times the gravitational force on Earth. If an object has a mass of 50 kg and a weight of 490 N on Earth, what would be the object's approximate mass and weight on Jupiter?
a)
50 kg and 490 N
b)
100 kg and 490 N
c)
50 kg and 980 N
d)
100 kg and 980 N
43.
Which objects have a STRONG force of gravity?
a)
Objects with GREATER mass, like elephants
b)
Objects with LESS mass, like mice
44.
As distance between two objects increase the pull of gravity 
a)
Increases
b)
Decreases
c)
Stays the same
45.
Which of the following never changes no matter where in the universe?
a)
weight
b)
force
c)
mass
d)
pounds
46.
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
47.
If Earth's mass was cut in half, what would happen to your mass?
a)
increase because gravitational force increases
b)
decrease because gravitational force decreases
c)
decrease because gravitational force increases
d)
nothing, mass is not affected by gravitational force
48.
What best describes the mass and weight of a person as they move around the universe?
a)
mass and weight changes
b)
Mass and weight stays constant
c)
weight remains constant, mass changes
d)
Mass stays constant, weight changes
49.
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
50.

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

51.
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
52.

What is the mass and weight of a 15 kg object?

a)

mass: 15 kg; weight: 15 kg

b)

mass: 150 kg; weight: 15 kg

c)

mass: 10 kg; weight: 150 N

d)

mass: 15 kg; weight: 150 N

53.
An object at rest will _______ if no outside forces are applied.
a)
Stay at rest
b)
Increase Velocity
c)
Decrease Mass
54.
A greater applied force is required to move an object with a greater mass than one with a smaller mass.
a)
True
b)
False
55.
If a baseball and a cannonball are dropped from the same height at the same time, which ball will hit the ground first?
a)
the cannonball
b)
the baseball
c)
The balls land at the same time.
d)
the ball with the larger volume
56.
A person is pushed forward into their seat belt when a car stops.  Which law is this?
a)
1st
b)
 2nd
c)
2 and 3
d)
3rd 
57.
You hit a wall with a stick.  The equal but opposite reaction is _____
a)
the wall pushes against you
b)
the stick pushes against you
c)
you push against the stick
d)
the wall pushes against the stick
58.
An empty truck and a fully loaded truck are next to each other at a traffic light. When the light turns green, the lighter truck increases speed more quickly. Which law best explains this situation?
a)
Newton's first law
b)
Newton's second law
c)
Newton's third law
d)
Conservation of momentum
59.
For a force on an object there is an equal and opposite force.
a)
Newton’s first law of motion
b)
Newton’s second law of motion
c)
Newton’s third law of motion
60.
Friction is a force that acts in an ___________ direction of movement.
a)
similar
b)
opposite
c)
parallel
d)
west
61.
The amount of friction depends on the weight of the objects pressing together.
a)
True
b)
False
62.
What type of friction is not moving?
a)
static
b)
sliding
c)
fluid
d)
rolling
63.
How can friction be reduced?
a)
reduce the force acting between the 2 surfaces
b)
reduce the roughness of the 2 surfaces coming in contact
c)
use wax, grease or oil
d)
all of the above are ways of reducing friction
64.
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 
65.
Which of the following is an example of friction that is helpful?
a)
Brakes used on a bike
b)
Tires from a car on the road
c)
Tread on the bottom of your shoes
d)
All are examples that are helpful
66.
Which of the following is an example of friction that is harmful?
a)
Pencil marking on paper
b)
Engine parts wearing out
c)
sand placed on ice in the winter
d)
Using an eraser to erase marks
67.
Rougher surfaces have ...
a)
greater friction
b)
less friction
c)
the same level of friction
68.
How does friction affect speed?
a)
more friction decreases speed
b)
more friction increases speed
c)
less friction decreases speed
d)
less friction doesn't affect speed
69.

without friction, an object in motion would never stop

a)

true

b)

false

70.

you can walk because there is friction between your __________ and ______________

a)

ground and air

b)

feet and ground

c)

feet and air

d)

air and ground

71.

friction helps you write on a paper or black board.

a)

true

b)

false

72.

having streamlined vehicles can reduce friction

a)

true

b)

false

73.

these are examples of lubricants

a)

oil,

b)

grease

c)

powder

d)

all of the above

74.

What is fluid friction?

a)

friction is friction between two surfaces that aren't moving relatively to each other

b)

friction between a rolling object and the surface that it is rolling on

c)

friction where an object slides rubs against another surface

d)

friction of something going through any type of liquid or air

75.
On which surface will a toy car travel the furthest?
a)
Carpet
b)
Polished Wood
c)
Ice
76.

Only solids can produce friction

a)

true

b)

false

77.

Which two of these forces act on parachutes?

a)

Air Resistance

b)

Gravity

c)

Thrust

d)

Kinetic Energy

78.

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

79.

Another name for air resistance is...

a)

Buoyancy

b)

Streamline

c)

Gravity

d)

Drag

80.

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

a)

Less

b)

More

c)

Longer

d)

Quicker

81.

Air resistance pushes against falling

objects and __________________.

a)

Speeds them up

b)

Keeps them afloat

c)

Slows them down

d)

Spins them

82.

The larger the parachute the ____________

a)

Less air resistance

b)

More surface tension

c)

Less drag

d)

More drag

83.

Which has more air resistance?

a)
b)
84.

Air resistance is a force caused by...

a)

Water pushing against moving objects

b)

Air pushing against moving objects

c)

Gravity pushing against moving objects

d)

Normal force pushing against moving objects

85.

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

a)
b)
86.
The force that acts in the opposite direction of motion when two surfaces come in contact. 
a)
Force
b)
Friction
c)
Static
d)
Kinetic 
87.

What does friction do to the motion of an object?

a)

Friction slows down or stops an object.

b)

Friction keeps an object from moving.

c)

Both of the above

88.

A hard wood floor has more friction than a carpet.

a)

true

b)

false

89.

The more friction that there is, the slower an object will move.

a)

true

b)

false

90.
How does friction affect speed?
a)
more friction decreases speed
b)
more friction increases speed
c)
less friction decreases speed
91.

Without friction, an object in motion would never stop.

a)

true

b)

false

92.

How would the absence of friction affect a marble travelling on a long, straight path?

a)

the marble's speed would decrease

b)

the marble would remain at a constant speed

c)

the marble's speed would increase

d)

the marble would stop immediately

93.
How can friction be reduced?
a)
reduce the force acting between the 2 surfaces
b)
reduce the roughness of the 2 surfaces coming in contact
c)
use wax, grease or oil
d)
all of the above are ways of reducing friction
94.

Which two of these forces act on parachutes?

a)

Air Resistance

b)

Gravity

c)

Thrust

d)

Kinetic Energy

95.

Air resistance pushes against falling

objects and __________________.

a)

Speeds them up

b)

Keeps them afloat

c)

Slows them down

d)

Spins them

96.

Which has more air resistance?

a)
b)
97.

The more streamlined an object is, the...

a)

More air resistance

b)

Less air resistance

c)

Slower air resistance

d)

Faster air resistance

98.

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

99.

A force which causes objects to fall is

a)

weight

b)

gravity

c)

air resistance

d)

absorbency

100.

When you drop a hammer and a feather on the moon what will happen? There is no air on the moon.

a)

They will hit at the same time

b)

The hammer will hit first

c)

The feather will hit first

101.

Which two forces act on an object in water?

a)

gravity

b)

friction

c)

weight

d)

upthrust

102.

What happens if the weight of an object is equal to or less than the upthrust?

a)

It floats

b)

It sinks

c)

It spins

d)

It explodes!

103.

What happens if the weight of an object is greater than the upthrust?

a)

it floats

b)

it sinks

c)

it bounces

d)

it vibrates

104.

Upthrust is an opposite force to gravity.

a)

TRUE

b)

FALSE

105.

In diagrams, forces are represented using (a)   .

106.

(a)   is a force caused when two objects rub against each other.

107.

The force that causes the Earth to orbit the Sun is called (a)   .

108.

Weight is a force dependent on (a)   .

109.
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
110.
Complete the following statement: The farther away two planets are the _______ the gravitational force between them.
a)
more
b)
same
c)
dosen't matter
d)
less
111.

Which configuration will result in the greatest gravitational force?

a)

small masses far apart

b)

large masses far apart

c)

small masses close together

d)

large masses close together

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