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Unit 1 Review

Total questions: 75

Worksheet time: 19hrs 45mins

Name
Class
Date
1.

Force can change the speed or direction of motion of an object, or sometimes both. The illustration below shows a game of tug-of-war between two teams of students. The team of students on the right won the contest. What force helped the winning team?

a)
a balanced force
b)
an electrical force
c)
an unbalanced force
d)
a gravitational force
2.

The forces acting on an object can either be balanced or unbalanced. If an unbalanced force is applied to an object, what might happen to the object?

a)
only the speed of the object might change
b)
only the direction of the object might change
c)
both the speed and direction of the object might change
d)
neither the speed or direction of the object might change
3.

During the car ride home from school, Peter explained to his father what he learned about motion in class that day. He predicted to his father that they would experience negative acceleration before they arrived home. When did Peter and his father experience NEGATIVE acceleration?

a)
when they filled the car up with gas
b)
when they passed another car
c)
when the drove out of the school parking lot onto the road
d)
when the approached a stop sign
4.

Rina’s mother asked her to help move some items from the hall closet to the garage. One item she wanted to move was a large box of old school books. Rina tried to lift the box, but could not pick it up. What force was Rina NOT able to overcome?

a)
frictional force
b)
electrical force
c)
gravitational force
d)
magnetic force
5.

Jorge was riding in the car with his family. Suddenly Jorge shouted out “We just experienced an unbalanced force!” When did Jorge shout this out?

a)
when their car's engine started
b)
when their car was passed by another car, while traveling at a constant speed
c)
when their car slowed down for a red light
d)
when their car kept on traveling straight along the highway at a constant speed
6.

Melinda is preparing to perform an experiment to test how an unbalanced force affects an object. She plans to use a hair dryer to blow air on a ping pong ball. What two variables should she measure in this experiment?

a)
force and mass
b)
direction and time
c)
mass and speed
d)
speed and direction
7.

Two students, Priscilla and Devin, are pulling as hard as they can against one another at either end of the rope. Their friend Rod walks by and says they are pulling equally hard. How does he know?

a)
The rope is making waves.
b)
Devin is getting rope burn.
c)
Priscilla and Devin are not moving.
d)
Priscilla is sliding at a constant rate.
8.

A marine biologist observed the swimming speed of five different types of fish as shown in the chart below. What measurements did the marine biologist take to correctly calculate the speed of these fish?

a)
time and density
b)
volume and mass
c)
distance and time
d)
distance and density
9.

Kareem set up the materials shown in the illustration below as part of an experiment involving friction. What two instruments will Kareem need to calculate the speed of the book as it slides down the ramp?

a)
metric ruler and balance
b)
metric ruler and stopwatch
c)
balance and stopwatch
d)
magnifying lens and metric ruler
10.

The graph below plots the distance in kilometers traveled by an object over time in hours. What can you conclude from this graph?

a)
The speed of the moving object remains constant.
b)
The speed of the moving object increases over time.
c)
The speed of the moving object decreases over time.
d)
The speed of the moving object first increases and then decreases.
11.

Mary performed an experiment on motion using a toy car and created a graph to plot the data. What units should Mary use on her graph to show the constant speed of the toy car over a certain distance?

a)
grams and minutes
b)
meters and seconds
c)
minutes and hours
d)
meters and centimeters
12.

Look at the illustration below of a block sitting on a table-top. The magnified (enlarged) view illustrates a force that exists between the two objects. Which type of force is demonstrated in this magnified (enlarged) view?

a)
electrical force
b)
frictional force
c)
magnetic force
d)
no force
13.

The graph below shows the distance vs time data for two objects. Which statement represents an accurate conclusion that can be drawn from the graph?

a)
Objects A and B moved in the same direction.
b)
Object A moved at a constant speed while Object B's speed changed as it moved.
c)
Object A moved faster than Object B.
d)
Objects A and B moved in straight lines.
14.

While measuring the distance his toy car traveled during certain time periods, Manuel recorded the following data on the graph below. Which of the following gives the time period when the speed of the car was fastest?

a)
from 0 to 6 seconds
b)
from 6 to 12 seconds
c)
from 12 to 20 seconds
d)
from 20 to 25 seconds
15.

The drawing below shows the cars of a roller coaster racing down the track. How does the Law of Conservation of Energy BEST explain the energy of the cars on the track?

a)
The kinetic energy of the cars is being transformed into potential energy.
b)
The cars have potential energy, but no kinetic energy.
c)
The potential energy of the cars is being transformed into kinetic energy.
d)
The cars have kinetic energy, but no potential energy.
16.

As shown in the diagram below, a 10 kg block starts from rest at point A and slides along a track past point B to point C. Which of the following is a correct statement about the potential energy of the block?

a)
it will be a zero at point C
b)
it will be greatest at point B
c)
it will decrease as it moves from point B to C
d)
it will be greatest at point A
17.

Energy can occur in many forms. Which of the following terms BEST describes kinetic energy?

a)
motion
b)
length
c)
height
d)
volume
18.

A high-speed collision between two vehicles causes more damage than a low-speed collision. What is the reason for this?

a)
Vehicles traveling at a high speed have no potential energy.
b)
Vehicles traveling at a low speed have no potential energy.
c)
Vehicles traveling at a high speed have more kinetic energy than vehicles traveling at lower speeds.
d)
Vehicles traveling at a low speed have more kinetic energy than vehicles traveling at higher speeds.
19.

Energy can be transformed from one type to another. In which of the following situations is kinetic energy transformed into potential energy?

a)
when a boulder falls down a mountain
b)
when a water tank ruptures and water flows out
c)
when a tree branch falls toward the ground
d)
when a ball is thrown straight up into the air
20.

Federica loves both science and baseball. When her father took her to a baseball game, she observed many examples of energy and energy transformation during the game. Which of these statements describes an example of kinetic energy that Frederica saw during the game?

a)
Frederica’s favorite player sitting in the dugout.
b)
Frederica’s favorite player running in the outfield to make a spectacular catch.
c)
Frederica’s favorite player standing at home plate ready to hit.
d)
Frederica’s favorite pitcher watching an outfielder catch a flyball.
21.

The illustration below shows what happened when a balloon touched a girl’s hair. Which type of force caused the girl’s hair to cling to the balloon?

a)
gravitational force
b)
electrical force
c)
magnetic force
d)
frictional force
22.

Marissa wants to know which of four routes that she could possibly take on her walk to school is the fastest. Which of the following is the BEST way for Marissa to gather information to answer this question?

a)
She should look on a map to see which route looks shortest.
b)
She should walk each route herself at a normal pace and time how long each takes.
c)
She should take a survey of her friends to find out what they think is the fastest route.
d)
She should have four friends each take one route and observe who arrives at school first.
23.

Sam developed the following hypothesis for his science project: The speed of a skateboard rolling downhill is greater on steep hills than on flatter hills. How can Sam ​BEST test this hypothesis?

a)
Push the skateboard with varying force down inclines set at different angles and measure the force with which the skateboard hits the wall.
b)
Push the skateboard with varying force down inclines set at different angles and measure the distance traveled each time.
c)
Roll the skateboard down a single incline, and measure the force with which it hits the wall.
d)
Roll the skateboard down inclines set at different angles, and measure the time it takes to roll the same distance each time.
24.

Scientific investigations have certain standards, including the ability to be replicated. Why should scientists be able to replicate an investigation?

a)
A scientist might need to conduct multiple trials to ensure that results are accurate.
b)
Other scientists need to verify the results.
c)
Other scientists need to review the method by which results were communicated.
d)
Replicating an investigation proves that the hypothesis was correct.
25.

Sasha keeps her pet snake in an aquarium. Sasha has just completed an investigation to test how the strength of the light bulb she uses in the aquarium affects how much the snake eats. Which of the following procedures would be a repetition of Sasha’s investigation?

a)
Sasha repeats the investigation following the same steps as her initial investigation.
b)
Sasha repeats the investigation using stronger light bulbs.
c)
Sasha repeats the investigation using an additional snake in the cage.
d)
Marcus repeats the investigation following the same steps as Sasha’s initial investigation.
26.

A contact force is from

a)

objects physically touching

b)

far apart objects

c)

not touching object

d)

always a pull

27.

This game of tug of war is an example of _________ forces.

a)

unbalanced

b)

balanced

c)

potential

d)

net zero

28.

What will the net force on the soccer ball be?

a)

50 N to the left

b)

50 N to the right

c)

200 N to the left

d)

200 N to the right

29.

What effect does friction have on a moving object?

a)

it causes the moving object to slow and eventually stop

b)

it causes the moving object to speed up

c)

it keeps the moving object moving in the same direction forever

d)

it causes the moving object to turn around and move in the opposite direction

30.

Person on the left = 45 N

Person on the right = 32 N

What is the net force?

a)

zero N

b)

10 N

c)

77 N

d)

13 N

31.

This motion graph represents:

a)

constant speed

b)

acceleration

c)

body at rest

d)

slowing down

32.

A force that opposes motion is

a)

friction

b)

inertia

c)

acceleration

d)

momentum

33.

A change in an object's position, direction or location

a)

Position

b)

Force

c)

Motion

d)

Inertia

34.

An object at rest stay at rest and an object in motion stays in motion until acted upon by an unbalanced force.

a)

Newton's 3rd Law

b)

Force

c)

Newton's 2nd Law

d)

Newton's 1st Law

35.

Equal forces that do not cause a change in an objects motion

a)

Unbalance force

b)

Push or a pull

c)

Balanced force

d)

Average speed

36.

Unequal forces that cause a change in the motion of an object

a)

Balanced forces

b)

Unbalanced forces

c)

Inertia

d)

Gravity

37.
Are forces balanced or unbalanced when a marble speeds up rolling down a ramp?
a)
Balanced
b)
Unbalanced
38.

Which way is the object moving?

a)

it's either not moving or moving at a constant speed due to balanced forces

b)

to the right

c)

to the bottom

d)

up

39.

The coffee cup in the picture is at rest on the table. What is true about the Normal force?

a)

The normal force is exactly 15

b)

The normal force is less than 15

c)

The normal force is more than 15

d)

The normal force is -10

40.

What is the NET FORCE of this diagram?

a)

17 N, right

b)

17 N, left

c)

23 N, right

d)

12 N, up

41.

Which diagram best shows person pushing a couch (accelerating) across the floor?

a)
b)
c)
d)
42.
What is the net force?
a)
400 N Up
b)
400 N Down
c)
- 400 N Down
d)
800 N Down
43.
What is the net force
a)
10 N
b)
0 N
c)
25 N
d)
1 N
44.
What is the net force?
a)
40 N left
b)
0 N Balalnced
c)
400 N right
d)
40 N right
45.

When astronauts walked on the Moon, they used weighted boots to help them walk due to the lower gravitational pull. What difference between Earth and the Moon accounts for the difference in gravity?

a)

density

b)

diameter

c)

mass

d)

volume

46.
What keeps the Moon in orbit around Earth?
a)
Earth's rotation.
b)
Earth's atmosphere.
c)
Earth's gravity.
d)
Earth's shape.
47.

What two things does gravity depend on?

a)

Mass and weight

b)

Weight and distance

c)

Mass and force

d)

Mass and distance

48.
Something that is not moving stays still, and something moving continues going until another force affects it.
a)
Inertia
b)
Velocity
c)
Acceleration
d)
Motion
49.
Forces that are equal in size but opposite in direction.
a)
Balanced force
b)
Unbalanced force
c)
Potential Energy
d)
Friction
50.
When two forces acting on an object are not equal in size.
a)
Balanced Force
b)
Friction
c)
Velocity
d)
Unbalanced Force
51.

When the net force of opposite forces is zero, the forces are

a)

unbalanced

b)

not equal

c)

balanced

d)

not even

52.

Under what condition will a bowling ball slow down if it is rolling down a bowling lane at a constant speed?

a)

An accelerating force is applied to the ball.

b)

An unbalanced external force is applied to the ball.

c)

The mass of the ball is reduced.

d)

The direction of the ball is changed.

53.

You are pushing a box to the right with 5N, while your friend is pulling the box to the left with 15N.

What is the net force and which direction will the box move?

a)

20N to the left

b)

10N to the right

c)

10N to the left

d)

20N to the right

54.
Is this a balanced or unbalance force?
a)
Balanced
b)
Unbalanced
c)
Neither one
d)
Both
55.
Which direction will the object move?
a)
Right
b)
Left
c)
Up
d)
Down
56.
Students are playing tug-of-war. If group B pulls the rope to the right with a force of 400 N and group A pulls the rope to the left with a force of 250 N, what will happen to the ribbon in the middle of the rope?
a)
The ribbon will move to the left and group A will win the tug-of-war.
b)
The ribbon will move to the left and group B will win the tug-of-war.
c)
The ribbon will move to the right and group B will win the tug-of-war.
d)
The ribbon will move to the right and group A will win the tug-of-war.
57.
An airplane is travelling North through the sky at a constant speed when turbulence causes it to take a different route, changing its direction. Explain the forces at work on this plane.
a)
Unbalanced, because the plane is moving forward, not backwards
b)
Unbalanced, because the speed is constant and there is a change in direction
c)
Balanced, because the plane is not falling to a lower altitude
d)
Unbalanced, because the plane is in motion
58.
What is the net force?
a)
65 N left
b)
65 N right
c)
35 N left
d)
35 N right
59.
the tendency of an object to resist a change in its motion
a)
acceleration
b)
inertia
c)
mass
d)
frame of reference
60.
What is the unit of measurement for force?
a)
AMP
b)
Seconds
c)
Newtons
d)
Miles
61.

In what has become an all too regular occurrence, another elephant has been seen chasing a mouse. The mouse can run much faster than the elephant and the elephant is much more massive than the mouse. Why can the mouse change directions quicker than the elephant?

a)

Because the mouse has a greater speed.

b)

Because the mouse has less mass.

c)

Because the elephant has a smaller speed.

d)

Because the elephant has less mass.

62.

When you slide a box across the floor, what force does your push have to be greater than in order for there to be emotion.

a)

Normal force

b)

Gravitational force

c)

Air resistance force

d)

Frictional force

63.

What makes a good reference point?

a)

Something that is in constant motion

b)

Something that is acceleration

c)

Something that is stationary (not moving)

d)

Something that is decelerating

64.

What causes a change in an object's motion?

a)

Balanced forces

b)

Acceleration

c)

Unbalanced forces

65.

A cyclist rides north past an old man sitting on a bench. What direction will the cyclist see the old man moving? Assume that the old man is sitting still.

a)

North

b)

South

c)

East

d)

West

e)

The old man will not appear to be moving

66.

What would be a good reference point to describe the motion of the Earth within our solar system?

a)

The sun

b)

The Earth

c)

The mountains on Earth

d)

The Milky Way

67.

What is the Net Force on the box shown below?

a)

12N upward

b)

12N downward

c)

23N to the right

d)

17N to the left

e)

17N to the right

68.

What is the Net Force on the box shown below?

a)

100N upward

b)

150N left

c)

0N

69.

During a baseball game, a hitter strikes the ball with a bat. When this happens, the ball and the bat exert a force on each other. Why does the ball accelerate away from the bat more than the bat accelerates away from the ball?

a)

The ball has greater velocity before the collision, so the force affects the ball more than it affects the bat.

b)

The bat exerts more force than the ball because the batter is exerting a force on the bat as it hits the ball.

c)

The ball has less mass, so the equal force on the ball and the bat causes greater acceleration of the ball.

70.

A person is staying in the middle of a boxcar on a train moving 100km per hour (see image). If the motion of the boxcar remains constant, where in the boxcar will the person most likely land after he jumps straight up?

a)
b)
c)
d)
71.

What direction will the box move?

a)

Right

b)

Up

c)

Left

d)

The box will not move

72.

A book weighing 3 kg sits on top of a table, as shown below. Why does the book not move?

a)

There are no forces acting on the book

b)

All forces are balanced

c)

Gravity is the only force acting on the book

d)

Every unbalanced force is pushing downwards

73.

If the same force is being applied to a 6000 kg truck and a 200 kg car, which statement below correctly describes the acceleration?

a)

The truck will accelerate faster

b)

The car will accelerate faster

c)

The truck and car will not accelerate

d)

The truck and car will accelerate equally

74.

What is the resultant force (Net Force) for this object?

a)

6N to the right

b)

4N to the left

c)

14N to the left

d)

The object will not move

75.

What is the resultant force (Net Force) for this object?

a)

4N to the right

b)

7N to the left

c)

11N to the left

d)

The ball will not move

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