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WorksheetsPhysical Science Post Test
Total questions: 84
Worksheet time: 1hrs 3mins
Name
Class
Date
1.
What is the unit called that measures force?
a)
Isaac
b)
Yee
c)
Newton
d)
kilogram
2.
The term inertia means an object's resistance to motion; which of Newton's laws involves inertia?
a)
first
b)
second
c)
third
d)
fourth
3.
Which of Newton's laws is illustrated when a magician pulls a tablecloth out from under the dishes without disturbing them?
a)
first
b)
second
c)
third
d)
fourth
4.
A(n) __________ is a push or pull.
a)
newton
b)
acceleration
c)
force
d)
momentum
5.
If you exert a net force of 8 N on a 2-kg object, what will its acceleration be?
a)
2 m/s2
b)
4 m/s2
c)
16 m/s2
d)
10 m/s2
6.
An object at rest will _______ if no outside forces are applied.
a)
Stay at rest
b)
Increase Velocity
c)
Decrease Mass
d)
Go to sleep
7.
Pushing a child on a swing is easier than pushing an adult on the same swing.
a)
1st Law
b)
2nd Law
8.
If an action force is a cue ball (white) hitting a billiard ball (various colors) when playing pool, then the reaction force is
a)
exerted on the table
b)
exerted on all the other billiard balls.
c)
not present
d)
exerted by the billiard ball on the cue ball.
9.
According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will ..
a)
remain in motion.
b)
eventually come to a stop.
c)
change its momentum.
d)
accelerate.
10.
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.
11.
An object will not have any inertia if it is __________?
a)
Accelerating
b)
Moving in a circle
c)
In space
d)
… Nonsense! All objects have inertia
12.
267.5 N unbalanced force applied to push a stuffed chair across the room, causing an acceleration of 4.2 m/s2. What is the mass of the chair?
a)
26.75 kg
b)
63.69 kg
c)
263.3 kg
d)
1123.5 kg
13.
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 of these best explains this situations
a)
Newton's first law
b)
Newton's second law
c)
Newton's third law
d)
Conservation of momentum
14.
What is the force used to push a 20 kg wheelbarrow that accelerates 5 m/s?
a)
100N
b)
10N
c)
4N
d)
40N
15.
Which of the following might lead to the changing of a scientific idea?
a)
A scientist describes an experiment to a group of students
b)
A scientist gets the same results when repeating an experiment a second time
c)
a scientist gets results that do not fit a current idea and other scientists find his results are valid
d)
a scientist has to redo her experiment because she finds the correct procedure was not followed
16.
When using the scientific method, the problem is written as a(n)
a)
explanation
b)
statement
c)
question
d)
essay
17.
I am conducting an experiment to determine if the amount of fertilizer used on a field effect the number of earthworms found there? What is a control variable for this experiment?
a)
number of earthworms
b)
soil type
c)
amount of fertilizer
18.
I want to see how the amount of water affects plant growth. What is the independent variable?
a)
amount of water
b)
plant growth
c)
type of plant
d)
soil type
19.
A testable idea or explanation that leads to a scientific investigation is called (can be stated as an if/ then statement)
a)
conclusion
b)
experiment
c)
hypothesis
20.
The variable being tested. The one thing you change.
a)
independent
b)
dependent
c)
control
21.
The variable that is your result. Usually measured.
a)
independent
b)
dependent
c)
control
22.
I am conducting an experiment to determine if the amount of oxygen in the water affects the fish population? What is the dependent variable?
a)
the number of the fish population
b)
amount of oxygen
c)
amount of water
23.
I see that Mrs. McDermott is holding a coffee cup, I assume that there is coffee in the coffee cup. By making the assumption that there is coffee in the mug, I have made a(n)
a)
observation
b)
inference
c)
classification
d)
experiment
24.
All the measurements and data scientists gather in support of a scientific explanation
a)
hypothesis
b)
valid
c)
invalid
d)
empirical evidence
25.
What does this graph represent?
a)
Constant Speed
b)
Acceleration
c)
Not moving
26.
What does this graph represent?
a)
Constant speed
b)
Acceleration
c)
Not moving
27.
What does this graph represent?
a)
Constant speed
b)
Acceleration
c)
Not moving
28.
What is happening at A?
a)
Stationary
b)
Accelerating
c)
Slower steady speed; moving away from the starting position
d)
Steady speed; returning to start position
29.
What is happening at D?
a)
Stationary
b)
Accelerating
c)
Fast steady speed; moving away from the starting position
d)
Slower steady speed; moving away from the starting position
30.
Which runner won the race?
a)
A
b)
B
c)
C
31.
Every morning, Tom walks along a straight road from his home to the bus stop. Below, is a graph representing Tom’s trip to school.
- What is the distance covered through the second segment, which is between 50 seconds, and 70 seconds?
- What is the distance covered through the second segment, which is between 50 seconds, and 70 seconds?
a)
40 meters
b)
60 meters
c)
80 meters
d)
20 meters
32.
A car driving at 50 miles per hour drives for 2 hours. What distance did it cover?
a)
50 miles
b)
25 miles
c)
100 miles
d)
75 miles
33.
This force attracts all objects toward each other.
a)
Newton
b)
gravity
c)
weight
d)
path
34.
Gravity attracts all objects towards one another.
a)
False
b)
True
c)
It depends
d)
I don't care
35.
As the product of two objects' masses increases, the pull of gravity
a)
Increases
b)
Decreases
c)
Stays the same
36.
Which of the following will not change in different gravitational fields?
a)
weight
b)
force
c)
mass
d)
pounds
37.
Which of the following will change with different gravitational forces?
a)
mass
b)
amount of matter in an object
c)
weight
d)
kilograms
38.
A force of attraction between 2 object that is directly related to mass and indirectly related to distance.
a)
mass
b)
weight
c)
gravity
d)
kilogram
39.
As mass increases, what happens to gravitational force?
a)
increases
b)
decreases
c)
stays the same
d)
i don't know
40.
As the distance between 2 objects increases, what happens to gravitational force?
a)
increases
b)
decreases
c)
stays the same
d)
i don't know
41.
If there are two forces going in the same direction how would you find the net force?
a)
Subtract
b)
Add
c)
Neither
d)
Multiply
42.
8 N to the left , and 4 N to the right. Find the net force. Is this balanced
a)
12 N Right and its Not balanced
b)
4 N Left and its Not balanced
c)
12 N Right and its balanced
d)
4 N Left and its balanced
43.
What is force?
a)
A push exerted on an object
b)
A push or pull exerted on an object
c)
A pull exerted on an object
d)
Nothing
44.
With unbalanced forces, the object will move in the direction of the _______ force.
a)
larger
b)
smaller
c)
equal
45.
Forces that have a net force of zero ( the object is still).
a)
Balanced force
b)
Unbalanced force
46.
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
47.
What is the net force?
a)
5000 N right
b)
4000 N right
c)
40 N left
d)
4000 N left
48.
You and your friend, are playing tug of war. Your friend pulls with a force of 55 N, to the rights. You pull with a force of 65 N, to the left. What is the net force on the rope?
a)
10 n, to the left
b)
20 N
c)
10 N, to the left
d)
10 N, to the right
49.
__________ is the sum of all forces acting on an object. It is capable of accelerating a mass.
a)
velocity
b)
gravity
c)
net force
d)
distance
50.
A runner races in the 100 meter dash. It takes her 10 seconds to finish. What is her average speed?
a)
10 m/s
b)
1000 m/s
c)
100 seconds
d)
10 seconds
51.
How far will a person go if they jog for 2 hours at a speed of 12 km/hr?
a)
6 km
b)
0.5 km
c)
10 km
d)
24 km
52.
According to the graph how far does the person travel in the first 5 seconds?
a)
2 m
b)
10 m
c)
0 m
d)
5 m
53.
Rihanna cycles at an average speed of 8km/h. How far has she traveled if she cycles for 4 hours?
a)
55km
b)
32km
c)
43km
d)
32miles
54.
The Beatles travels 100km in 5hrs. Find their average speed in km/h
a)
5km/hr
b)
10km/hr
c)
50km/hr
d)
20km/hr
55.
What two measurements are necessary for calculating speed?
a)
Mass and time
b)
Temperature and mass
c)
Mass and distance
d)
Distance and time
56.
The location of an object within a reference frame is known as ________.
a)
direction
b)
position
c)
speed
d)
motion
57.
What is the speed of a baseball that travels 49 meters in 2.4 seconds?
a)
46.6 m/s
b)
117 m/s
c)
20.4 m/s
d)
0.48 m/s
58.
If a cross country runner covers 287 meters in 154 seconds what is her speed?
a)
2.01 m/s
b)
1.86 m/s
c)
2.86 m/s
d)
0.54 m/s
59.
Which has a greater speed a ball rolling 3.4 meters in 6 seconds or a fish swimming 5.4 meters in 0.4 seconds?
a)
Ball
b)
Fish
c)
Both have the same speed
d)
Not enough information to calculate
60.
In the Drop the penny station, When the card moved the penny does not forward with the card. Instead, if falls off. what happened to the penny?
a)
The penny accelerated backward as the card accelerated forward.
b)
An unbalanced force caused the cup to move with the card, but the gravity caused it to fall
c)
The upward force on the cup increased as the car moved forward.
d)
Inertial kept the penny from moving while the card moved forward.
61.
What is the force that slows down moving objects?
a)
friction
b)
gravity
c)
magnetic
d)
electrostatic
62.
Which of the following is not a force
a)
friction
b)
weight
c)
heat
d)
magnetism
63.
Which of the following is an example of non-contact force.
a)
frictional force
b)
normal force
c)
electrostatic force
d)
air resistance force
64.
When we roll a ball along a smooth surface, it will eventually stop moving if no additional force is applied because of _______.
a)
gravitational force
b)
frictional force
c)
magnetic force
d)
electrical force
65.
Which one of the following is not a force?
a)
kicking
b)
pushing
c)
thinking
d)
lifting
66.
A force can cause the following changes except ________________.
a)
speed up a moving object
b)
stop a moving object
c)
change the size of an object
d)
change the mass of an object
67.
_______ is a force.
a)
Volume
b)
Weight
c)
Mass
d)
Energy
68.
Which is the correct diagram?
a)
Left Boat
b)
Right Boat
69.
A force acting in the opposite direction of an object in motion
a)
Gravity
b)
Buoyant
c)
Friction
d)
Normal
70.
Which of the following is an example of a contact force?
a)
A magnet picking up safety pins
b)
The moon orbiting Earth
c)
Wind blowing leaves across the yard
71.
Which statement is true about magnetic forces?
a)
Distance does not affect the strength of the force field
b)
The charge of the magnet affects the strength of the force field.
c)
There is an east pole and west pole to every magnet
d)
Distance and the strength of the magnet affect the strength of the force field
72.
Which is a factor that affects the strength of gravitational, magnetic, and electrostatic force fields?
a)
Mass
b)
Volume
c)
Distance
d)
Density
73.
Which of the following is an example of a non-contact force
a)
Moon orbiting
b)
Wind moving a sailboat
c)
A duck floating on water
d)
Your book lying on a table
74.
What is another common name for Non-Contact Forces?
a)
Field Forces
b)
Air Resistance
c)
Friction
d)
Pushing and Pulling
75.
A scientist is collecting data on the number of times a cricket chips per minute. What sense is the scientist most likely using to make observations?
a)
hearing
b)
smell
c)
sight
d)
touch
76.
Mr. McNeice wanted to know if different types of music affected people's heart rates, so he played different music and checked their pulses. What is the responding(dependent) variable?
a)
type of music
b)
heart rate
c)
how long they listend to music
d)
Mr. McNeice
77.
Which question can best be investigated by a scientist?
a)
Should I buy a red shirt or a green shirt?
b)
Does chocolate milk or plain milk taste better?
c)
Does a plant need sunlight to grow?
d)
Which feels softer, cat fur or dog fur?
78.
Why should an experiment be repeated?
a)
to form a hypothesis
b)
to reduce the chance of error
c)
to change constants
d)
to identify the problem
79.
Which is the responding (dependent) variable in Amelia's experiment?
a)
the number of bean plants in each group
b)
the amount of water given daily to each plant
c)
the height of each bean plant
d)
the amount of fertilizer given to each group of bean plants
80.
How many manipulated (independent) variables should be tested at a time in a scientific investigation?
a)
none
b)
one
c)
two
d)
three
81.
In the paper airplane experiment, changing the size of the airplane would be which variable?
a)
Responding (Dependent)
b)
Manipulated (Independent)
c)
Control (constant)
d)
Conclusion
82.
When experimenting with the growth of a plant, a scientist uses three plants, two different fertilizers, equal light, and equal water. What type of variable is the water?
a)
Responding (Dependent)
b)
Manipulated (Independent)
c)
Control (constant)
d)
Outcome
83.
In order for an explanation to be considered scientific, it must be based on ____________.
a)
an inference
b)
a conclusion
c)
past experience
d)
evidence
84.
A testable prediction about a scientific investigation.
a)
Question
b)
Observation
c)
Hypothesis
d)
Experiment
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