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Physical Science Mid-Term

Total questions: 80

Worksheet time: 3hrs 30mins

Name
Class
Date
1.

A brick is resting on a level smooth surface. When a student applies a horizontal force of 5 N to the brick, the force of friction on the brick is also 5 N. Which statement BEST describes the effect of these two forces on the brick?

a)

The net force on the brick is 0 N, and the brick begins to move.

b)

The net force on the brick is 0 N, and the brick remains at rest.

c)

The net force on the brick is 10 N, and the brick begins to move.

d)

The net force on the brick is 0 N, and the brick remains at rest.

2.

One person pulls on a rope with a force of 400 N to the left. Another person pulls on the rope opposite end with a force of 600 N to the right. What is the unbalanced net force?

a)

200 N to the right

b)

400 N to the right

c)

600 N to the right

d)

1000 N to the right

3.

What is the Most reasonable explanation for why a toy car rolls farther on a wood floor than on thick carpet?

a)

The car weighs more on the carpet.

b)

The car weighs more on the floor.

c)

The car has more resistance.

d)

The car weighs less on the wood floor.

4.

In a lab investigation, a student notes that two metal blocks have the same mass. Based on this observation, if the two blocks were put on opposite sides of a balance, they would BEST represent

a)

balanced forces

b)

unbalanced forces

c)

equal and opposite reactions

d)

objects in motion

5.

When two unequal forces act in opposite directions on a moving object, the object will

a)

absorb the forces

b)

come to an immediate stop

c)

move in the direction of the larger force

d)

change direction

6.

A ball rolls across the floor and slows down to a stop. Which force caused the ball to slow down.

a)

friction

b)

gravity

c)

inertia

d)

magnetic

7.

A 20 N object is placed on a surface and starts to slide. What is the MOST likely reason the object begins to move.

a)

Gravity exerts a balanced force on the object

b)

An unbalanced force causes acceleration

c)

Friction is applied to the object

d)

The force acting on the object is in equilibrium

8.

The diagram above shows

a)

friction

b)

gravity

c)

balanced forces

d)

unbalanced forces

9.

A box is being pushed to the right with a force of 300 newtons, and to the left with a force of 400 newtons. What is the net force on the box.

a)

300 newtons

b)

400 newtons

c)

700 newtons

d)

100 newtons

10.

Which statement BEST compares a parked car to a car moving along a straight line at a constant speed.

a)

There are no forces acting on either car

b)

Only the moving car is being subjected to forces

c)

Both cars are being subjected to balanced forces

d)

Only the parked car is subjected to balanced forces

11.

Newton's first law of motion states:

a)

An object in motion will remain in motion and an object at rest will remain at rest unless acted upon by an outside force.

b)

Acceleration is produced when a force acts on an outside mass.

c)

The greater the mass of the object, the greater the force needed to accelerate

d)

For every action, there is an equal and opposite reaction

12.

Newton's second law of motion states:

a)

An object in motion will remain in motion and an object at rest will remain at rest unless acted upon by an outside force.

b)

Acceleration is produced when gravity acts upon it.

c)

The greater the mass of the object, the greater the force needed to accelerate

d)

For every action, there is an equal and opposite reaction

13.

Newton's third law of motion states:

a)

An object in motion will remain in motion and an object at rest will remain at rest unless acted upon by an outside force.

b)

Acceleration is produced when gravity acts upon it.

c)

The greater the mass of the object, the greater the force needed to accelerate

d)

For every action, there is an equal and opposite reaction

14.

A student runs a distance of 2 meters in 15 seconds. What is his speed?

a)

13 m/s

b)

.133 m/s

c)

133 m/s

d)

13.30 m/s

15.

Patrick traveled at a speed of 18 km/h for two hours. What was the distance traveled?

a)

18 km

b)

9 km

c)

36 km

d)

20 km

16.

 A train travels at a speed of 30 mph and travel a distance of 240 miles. How long did it take the train to complete it’s journey? 

a)

7200 hours

b)

8 hours

c)

80 hours

d)

8.5 hours

17.

An object with a mass of 2.0 kg accelerates 2.0 m/s2 when an unknown force is applied to it. What is the amount of the force?

a)

40 N

b)

4.0 N

c)

.40 N

d)

400 N

18.
What is the SI unit for mass?
a)
Kg
b)
g
c)
m
d)
s
19.
What is the SI unit for length
a)
m
b)
s
c)
kg
d)
ampere
20.
What is a measure of the change of velocity of a moving object?
a)
speed
b)
acceleration
c)
motion 
d)
velocity 
21.
If the velocity vector and acceleration vectors are moving in the same direction then
a)
speed will increase.
b)
speed will decrease.
c)
speed will be constant. 
22.
Which is not an example of acceleration?
a)
Driving at a constant speed 
b)
A bat hitting a ball
c)
Throwing a football 
d)
Kicking a soccer ball
23.
The force that a person or thing applies to an object 
a)
gravity
b)
nuclear forces
c)
applied forces
d)
friction
24.
What is the net force of the bottom picture?
a)
100 W
b)
700 W
c)
100 N
d)
700 N
25.
The sum of all of the forces acting on an object is known as the what?
a)
net force
b)
vectors
c)
resultant velocity 
d)
gravity 
26.
Balanced forces always have a net force of 
a)
10 N
b)
0 W
c)
10 W
d)
0 N
27.
True or False. Unbalanced forces will never have a net force of zero Newtons. 
a)
True
b)
False
28.
What is the net force of the object?
a)
10 N
b)
25 N
c)
5 N
d)
0 N
29.
Force is a vector because 
a)
it has size
b)
it has direction
c)
it has both size and direction
30.
If two forces act in the same direction on an object, then the forces are 
a)
added 
b)
subtracted 
c)
multiplied 
d)
divided
31.
If two forces act in opposite directions on an object then the forces are 
a)
added 
b)
subtracted 
c)
multiplied 
d)
divided 
32.
Velocity is equal to 
a)
acceleration / time
b)
time / acceleartion
c)
acceleration x time 
d)
acceleration + time 
33.
Objects falling through the air are slowed by the force of 
a)
velocity 
b)
acceleration 
c)
time 
d)
air resistance 
34.
Power is defined as the
a)
force on an object times the distance the object moves.
b)
force on an object divided by the time the force acts.
c)
work done times the time taken to do that work.
d)
work done on an object divided by the time to do the work
35.
What states that energy can never be created or destroyed?
a)
law of conservation of momentum
b)
law of conservation of energy
c)
law of conservation of matter
d)
law of conservation of water
36.
What kind of energy does an object possess when it's resting on top of the hill?
a)
Potential Energy
b)
None
c)
Kinetic Energy
d)
All
37.
Force is a _____ or _______
a)
simple    complex
b)
push     pull
c)
up      down
d)
in      out
38.
The ability to do work or cause change is...
a)
Gravity
b)
Energy
c)
Work
d)
Power
39.
A force exerted over a distance to move an object is ______________________.
a)
power
b)
work
c)
momentum
d)
Watt
40.
At which point(s) on the roller coaster is the kinetic energy at its maximum?
a)
A
b)
B
c)
C
d)
D
41.
At which point(s) on the roller coaster is the gravitational potential energy at its maximum?
a)
A
b)
B
c)
C
d)
D
42.

The energy associated with motion is called

a)

gravitational potential energy.

b)

kinetic energy.

c)

elastic potential energy.

d)

nuclear energy.

43.

Unlike kinetic energy, potential energy is

a)

energy of motion.

b)

stored.

c)

conserved.

d)

not measurable.

44.

A change from one form of energy into another is called

a)

an energy transformation.

b)

energy conservation.

c)

work.

d)

an energy increase.

45.

When you rub your hands together on a cold day, you use friction to transform

a)

mechanical energy into thermal energy.

b)

thermal energy into nuclear energy.

c)

nuclear energy into electrical energy.

d)

electrical energy into electromagnetic energy.

46.

What happens to the energy of a ball as it is dropped from a height of 10 m?

a)

Potential energy is transformed into mechanical energy.

b)

Mechanical energy is transformed into potential energy.

c)

Potential energy is transformed into kinetic energy.

d)

Kinetic energy is transformed into potential energy.

47.

How can you minimize the transfer of thermal energy?

a)

use a conductor

b)

use an insulator

c)

specific heat

d)

use the Kelvin scale

48.

A ball is about to roll down a ramp. What happens to the transfer of potential energy to kinetic energy if you make the ramp steeper?

a)

No change

b)

Kinetic energy increases

c)

Kinetic energy decreases

d)

There is no kinetic energy

49.

In a machine, work output is less than work input because some energy is converted into ___________energy.

a)

conservation of energy

b)

thermal

c)

electromagnetic

d)

kinetic

e)

mass

50.

A large truck and a small car are moving at the same speed. The truck has greater kinetic energy because its __________ is greater

a)

conservation of energy

b)

thermal

c)

electromagnetic

d)

kinetic

e)

mass

51.
The shortest wavelength in visible light is______.
a)
violet
b)
red
c)
blue
d)
yellow
52.
Frequency is a measure of...
a)
length of the wave
b)
height of the wave
c)
number of waves a second
d)
number of waves an hour
53.
When the wavelength increases the frequency will
a)
increase
b)
decrease
54.
What is the period of a wave if the wavelength is 100 m and the speed is 200 m/s?
a)
200,000 s
b)
0.5 s
c)
2 s
d)
100 s
55.
What is the speed of a wave if the wavelength is 100 m and the period is 20 s?
a)
2,000 m/s
b)
120 m/s
c)
80 m/s
d)
5 m/s
56.
Which letter(s) represent the trough of the wave?
a)
A
b)
B & D
c)
D
d)
C & G
57.
Which vocabulary term is used to identify the distance between points C & G?
a)
Amplitude
b)
Crest
c)
Frequency
d)
Wavelength
58.
The type of waves that require medium to pass:
a)
Mechanical Waves
b)
Electromagnetic Waves
59.
What property of the wave is represented by the letter "B"?
a)
amplitude
b)
crest
c)
trough
d)
wavelength
60.
Waves are a transfer of what?
a)
Heat
b)
Light
c)
Energy
d)
Food
61.
The ___________________ of waves can change when the waves move from one medium to another.
a)
altitude
b)
amplitude
c)
speed
d)
compression
62.
Which letter(s) represent the crest of the wave?
a)
A
b)
B & D
c)
B & F
d)
F
63.
Which wave in the diagram has the greatest frequency?
a)
1
b)
2
c)
3
d)
4
64.
Which wave in the diagram has the greatest wavelength?
a)
1
b)
2
c)
3
d)
4
65.

A stretched spring attached to two fixed points is compressed on one end and released as shown in the image. The resulting wave travels back and forth between the two fixed ends of the spring until it comes to a stop. This mechanical wave is an example of a

a)

Transverse Wave

b)

Longitudinal Wave

c)

Refracted Wave

d)

Reflection

66.

The two waves in the images are traveling at the same speed. Which statement best describes the difference between the waves?

a)

Wave A has a higher frequency than wave B.

b)

Wave A has a lower frequency than wave B.

c)

Wave A has a higher amplitude than wave B.

d)

Wave A has a lower amplitude than wave B.

67.

Distance Z is a measure of

a)

amplitude

b)

frequency

c)

wavelength

d)

wave speed

68.

Which of the following statements applies to a longitudinal wave?

a)

The motion of the medium is perpendicular to the motion of the wave

b)

The motion of the medium is parallel to the motion of the wave

c)

The motion of the medium is circular

d)

The motion of the medium is random

69.

What is the wavelength of a 264-Hz sound wave when the speed of sound is 345 m/s ? (v = λ⋅f)

a)

0.77m

b)

1.31m

c)

6.09m

d)

9.11m

70.

You are responsible to log in to your classes and complete assignments regardless if we are in-person or remote learning.

a)

True

b)

False

71.

Which is needed to determine the amount of gravitational force between two objects?

a)

distance and mass

b)

weight and time

c)

area and weight

72.
What is gravitational force?
a)
It makes objects at rest start moving.
b)
It makes objects that are moving stop.
c)
The force of attraction between two objects.
d)
It pulls you into space.
73.
As the product of two objects' masses increases, the pull of gravity
a)
Increases
b)
Decreases
c)
Stays the same
74.
This FORCE pulls things.  It PULLS things into orbit around the sun. 
a)
Newton
b)
gravity
c)
weight
d)
path
75.
A north pole and a south pole will attract.
a)
True
b)
False
76.
A magnet cannot not move which of the following objects?
a)
a paper clip
b)
a nail
c)
a toothpick
d)
a staple
77.
How is a permanent magnet DIFFERENT from a temporary magnet?
a)
A permanent magnet attracts materials made of iron.
b)
A permanent magnet has poles.
c)
A permanent magnet has a magnetic field.
d)
A permanent magnet keeps its magnetism for a long time.
78.
It is possible for a magnet to have only one pole.
a)
True
b)
False
79.
Where is the force of attraction the strongest on a magnet?
a)
at the poles
b)
in the middle
c)
above the magnet
d)
below the magnet
80.
What will happen when these magnets are brought close together?
a)
They will attract each other.
b)
They will repel each other.
c)
Both magnets will turn to the left
d)
Both magnets will turn to the right