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7th Grade Science Semester 1 Final Exam Review

Total questions: 80

Worksheet time: 1hrs 18mins

Name
Class
Date
1.

A brick and a pencil are dropped at the same time from the same height. Which one would hit the ground first?

a)

brick

b)

pencil

c)

both would hit at the same time

2.

What two things determine the gravity of an object?

a)

mass & weight

b)

mass & distance

c)

density & mass

d)

volume & distance

3.

When will the forces of gravity between two objects be the GREATEST?

a)

when the masses of both objects are small and the objects are far apart

b)

when the masses of both objects are large and the objects are close together

c)

when the masses of both objects are small and the objects are close together

d)

when the masses of both objects are large and the objects are far apart

4.

Which statement about gravity is true?

a)

gravity causes objects to pull towards one another

b)

gravity causes objects to push away from each other

c)

gravity only takes place between planets

d)

the moon doesn't have any gravity

5.

What is the standard UNIT OF MEASUREMENT used to measure force?

a)

liter (L)

b)

gram (g)

c)

Newton (N)

d)

meter (m)

6.
Any object with mass is surrounded by a gravitational field.
a)
True
b)
Sometimes
c)
False
d)
Never
7.
The force of gravity acting on an object is the object's ______.
a)
mass
b)
matter
c)
weight 
d)
terminal velocity 
8.
Which of the following will not change in different gravitational fields?
a)
weight
b)
force
c)
mass
d)
pounds
9.
A person would weigh more on Jupiter than on the Earth because . . .
a)
Jupiter has more mass, and therefore more gravity
b)
Jupiter has less mass, and therefore more gravity
c)
Jupiter has more mass, and therefore less gravity
d)
Jupiter has less mass and therefore less gravity
10.
Which model has greater gravitational attraction (if any)
a)
Model A
b)
Model B
c)
Both Model A and Model B (same gravity)
11.

Who is your favorite Science Teacher?

a)

Mr. Standifird

b)

Other

12.
Who said that falling objects fall at the same rate?
a)
Galileo
b)
Kepler
c)
Brahe
d)
Copernicus
13.
Gravity attracts all objects towards one another.
a)
False
b)
True
c)
It depends
d)
I don't care
14.
What is the SI unit used to measure force? 
a)
pounds 
b)
grams 
c)
newtons 
d)
kg/ m2
15.
Any object with mass is surrounded by a gravitational field.
a)
True
b)
Sometimes
c)
False
d)
Never
16.
As distance between two objects increase the pull of gravity 
a)
Increases
b)
Decreases
c)
Stays the same
17.
The force of gravity acting on an object is the object's ______.
a)
mass
b)
matter
c)
weight 
d)
terminal velocity 
18.
Which of the following will not change in different gravitational fields?
a)
weight
b)
force
c)
mass
d)
pounds
19.
Where would you have to travel to reduce your weight but not lose any mass?
a)
The moon
b)
The Sun
c)
Jupiter
d)
Saturn
20.
This FORCE pulls things.  It PULLS things into orbit around the sun. 
a)
Newton
b)
gravity
c)
weight
d)
path
21.
A person would weigh more on Jupiter than on the Earth because . . .
a)
Jupiter has more mass, and therefore more gravity
b)
Jupiter has less mass, and therefore more gravity
c)
Jupiter has more mass, and therefore less gravity
d)
Jupiter has less mass and therefore less gravity
22.
A person weighs _____ on the Earth than they do on the Moon. 
a)
less
b)
more
c)
the same
23.
Gravity on Mars’ surface is much lower than it is here on Earth. This is because the mass of mars is ______ than Earth.
a)
less
b)
more
c)
the same
24.
Which has more mass, Earth or the Moon?
a)
Earth
b)
Moon
c)
The same
25.
Why can astronauts jump and float a little on the Moon?
a)
Because the Moon's gravity is NOT that STRONG.
b)
Because the Moon's gravity is VERY STRONG. 
26.

A brick and a pencil are dropped at the same time from the same height. Which one would hit the ground first?

a)

brick

b)

pencil

c)

both would hit at the same time

27.

What keeps the planets in orbit around the sun?

a)

gravity

b)

friction

c)

density

d)

distance

28.

Which statement about gravity is true?

a)

gravity causes objects to pull towards one another

b)

gravity causes objects to push away from each other

c)

gravity only takes place between planets

d)

the moon doesn't have any gravity

29.

When will the gravity between two objects be the LEAST?

a)

when the masses of both objects is small and the objects are close together

b)

when the masses of both objects is small and the objects are far apart

c)

when the masses of both objects is large and the objects are close together

d)

when the masses of both objects is large and the objects are far apart

30.

What is the rate of acceleration due to gravity on Earth?

a)

1 m/s2

b)

365 m/s2

c)

9.8 m/s2

31.
When a heavy football player and a light one run into each other, who exerts more force?
a)
The heavy one
b)
The light one
c)
They are equal
d)
There is no such thing as force 
32.
What is Newton's First Law of Motion?
a)
F = m x a
b)
Every action has an equal an opposite reaction
c)
An object at rests stays, an object in motion stays in motion
d)
Friction
33.
What pulls a ball back to earth?
a)
Gas
b)
Friction
c)
Gravity
d)
Molecules
34.
Which law best describes a satellite orbiting the earth?
a)
Law of Inertia
b)
Law of Mass and Acceleration
c)
Law of Action Reaction
35.
A _______ is a push or pull.
a)
Newton
b)
Acceleration
c)
Momentum
d)
Force
36.
What is Newton's Second Law of Motion?
a)
F = m x a
b)
Action/Reaction
c)
Object in motion will stay in motion, object at rest will stay at rest
d)
Velocity
37.
Which force produces a change in motion?
a)
Unbalanced force
b)
Balanced force
c)
Gravitational force
d)
Frictional force
38.
What is the standard unit force is measured in?
a)
Newton
b)
Gram
c)
Pound
d)
Meter
39.
What is Newton's Third Law of Motion?
a)
Object in motion stays in motion and an object at rest stays at rest unless acted on by an unbalanced force
b)
Force = m x a
c)
For every action there is an equal and opposite reaction
40.
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
41.
The law in the picture represents---
a)
Newton's 1st law
b)
Newton's 2nd law
c)
Newton's 3rd law
d)
Newton's 4th law
42.
What Newton's law does this picture represent?
a)
Newton's 2nd law
b)
Newton's 1st law
c)
Newton's 3rd law
d)
Newton's 5th law
43.
Which has more inertia--
a)
Truck
b)
Cat
c)
Ant
d)
Skateboard
44.
How many laws of motion does Newton have?
a)
One
b)
Two
c)
Three
d)
Four
45.
1000 kg is the -----
a)
Force
b)
Mass
c)
Acceleration
d)
Weight
46.
20 N is the ----
a)
Mass
b)
Force
c)
Acceleration
d)
Weight
47.
45 meters per second squared is the--
a)
Acceleration
b)
Mass
c)
Weight
d)
Force
48.
If an object is stationary (not moving) the forces acting upon it are---
a)
Balanced
b)
Unbalanced
c)
Weak
d)
Hulk Smash?
49.
Forces always act in equal and opposite pairs.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
Newton's 4th Law
50.
An object at rest will _____ if not outside forces are applied.
a)
Stay at rest
b)
Decrease mass
c)
Increase velocity
51.
Newton's Law of Inertia describes the motion of-
a)
Objects at rest only
b)
Objects in motion only
c)
Objects at rest and objects that are in motion
d)
Objects without a mass and resist being set into motion
52.
When the air is released from a balloon, the air moves in one direction, and the balloon moves in the opposite direction. Which law best explains the motion of the balloon?
a)
Newton's Law of Inertia
b)
Newton's Law of F=ma
c)
Newton's Law of Force Pairs
d)
Newton's Law of Biology
53.
Which law best explains how objects accelerate when a force is applied?
a)
Newton's Law of Inertia
b)
Newton's Law of F=ma
c)
Newton's Law of Force Pairs
d)
Newton's Law of Chemistry
54.
Which law best explains why the coin sitting on top of the ring falls directly into the jar below because it wants to remain at rest?
a)
Newton's Law of Inertia
b)
Newton's Law of F=ma
c)
Newton's Law of Force Pairs
d)
Newton's Law of Science
55.
Which one of Newton’s Laws of Motion best explains why the dishes do not move when the table cloth is removed?
a)
Newton's Law of Inertia
b)
Newton's Law of F=ma
c)
Newton's Law of Force Pairs
d)
Newton's Law of Biology
56.
Which law best explains why the boat moves in the opposite direction that Sally moves as she jumps to shore?
a)
Newton's Law of Inertia
b)
Newton's Law of F=ma
c)
Newton's Law of Force Pairs
d)
Newton's Law of Chemistry
57.
Which law best explains why people remain in motion when a car crashes, if they are not wearing a seat belt?
a)
Newton's Law of Inertia
b)
Newton's Law of F=ma
c)
Newton's Law of Force Pairs
d)
Newton's Law of Biology
58.
Which law best explains why more force must be applied to the bowling ball to make it accelerate at the same rate as the tennis ball. 
a)
Newton's Law of Inertia
b)
Newton's Law of F=ma
c)
Newton's Law of Force Pairs
d)
Newton's Law of Biology
59.

Sir Issac Newton discovered how many laws of motion?

a)

1

b)

2

c)

3

d)

a billion

60.

A rocket pushes burning gases DOWN which causes the rocket to launch UP. Which law is this?

a)

Newton's 1st Law of Motion

b)

Newton's 2nd Law of Motion

c)

Newton's 3rd Law of Motion

61.

It is much more difficult to move a dresser full of clothes than an empty dresser.

a)

Newton's 1st Law of Motion

b)

Newton's 2nd Law of Motion

c)

Newton's 3rd Law of Motion

62.

A skateboarder pushes the ground BACKWARDS which causes the board to move FORWARD.

a)

Newton's 1st Law of Motion

b)

Newton's 2nd Law of Motion

c)

Newton's 3rd Law of Motion

63.

An object in motion stays in motion and an object at rest stays at rest UNLESS

a)

acted on by a balanced force.

b)

acted on by an unbalanced force.

64.

When a horse stops suddenly, the rider on its back continues to move forward onto the ground. Which law is this?

a)

Newton's 1st Law of Motion

b)

Newton's 2nd Law of Motion

c)

Newton's 3rd Law of Motion

65.

A sports car speeds up much faster than a tow truck when a traffic light turns from red to green. Which law is this?

a)

Newton's 1st Law of Motion

b)

Newton's 2nd Law of Motion

c)

Newtons 3rd Law of Motion

66.

An object in motion will stay in motion unless acted upon by an unbalanced force, or an object at rest will stay at rest unless acted upon by an unbalanced force.

a)

Newton's 1st Law of Motion

b)

Newton's 2nd Law of Motion

c)

Newton's 3rd Law of Motion

67.

The greater the mass of an object being moved, the greater amount of force needed to move the object.

a)

Newton's 1st Law of Motion

b)

Newton's 2nd Law of Motion

c)

Newton's 3rd Law of Motion

68.

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

69.

What is a PUSH or a PULL of an object?

a)

Motion

b)

Friction

c)

Force

d)

Gravity

70.
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
71.
What law of motion does this picture represent?
a)
Newtons 1st law
b)
Newtons 4th law 
c)
Newtons 3rd law 
d)
Newtons 2nd law
72.
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. 
73.

Which of the following is an example of Newton’s 1st Law of motion?

a)

a chromebook sitting on a desk

b)

a train traveling at a constant speed

c)

Earth orbiting the Sun

d)

all of the above

74.
What kind(s) of objects have inertia?
a)
all objects with mass
b)
only objects at rest
c)
only objects in motion
d)
only objects whose motion is being changed
75.
An object's motion won't change unless acted on by a _________
a)
spell
b)
force
c)
motion
d)
command
76.
For every action there is ______ and opposite reaction.
a)
an equal
b)
a stronger
c)
a weaker
d)
an exciting
77.
_______ force is needed to move objects of larger mass.
a)
Less
b)
Equal
c)
More
d)
Light
78.
A still object __________ have forces acting upon it.
a)
does
b)
can't
c)
doesn't
d)
will sometimes
79.
The force that pulls objects down towards the center of the Earth.
a)
Friction
b)
Gravity
c)
Air Resistance
d)
Wind Resistance
80.
The force that pulls objects down towards the center of the Earth.
a)
Friction
b)
Gravity
c)
Air Resistance
d)
Wind Resistance

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