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WorksheetsPhysical Science, Second Semester Final Exam, 2018
Total questions: 75
Worksheet time: 55mins
Name
Class
Date
1.
An object is _____ if its position changes relative to another object.
a)
in motion
b)
at reset
c)
a frame of refence
d)
magical
2.
A distance vs. time graph shows an object's
a)
frame of reference
b)
speed
c)
acceleration
d)
favorite food
3.
You walk 10 meters to math class in 20 seconds. Your average speed is
a)
2 m/s
b)
0.5 m/s
c)
200 m/s
d)
5 m/s
4.
Change in speed over a given period of time is
a)
velocity
b)
motion
c)
speed
d)
acceleration
5.
The rate at which velocity changes is called
a)
motion
b)
average speed
c)
instantaneous speed
d)
acceleration
6.
What is the SI unit for acceleration?
a)
m/s
b)
m
c)
m/s2
d)
s
7.
When something has speed in a certain direction it is called ___________.
a)
motion
b)
position
c)
velocity
d)
speed
8.
The formula:
? = D/T with direction
is used to find
? = D/T with direction
is used to find
a)
Velocity
b)
Speed
c)
Force
d)
Acceleration
9.
LT1 Which would NOT make a good reference point?
a)
Becker Middle School
b)
A chair
c)
A moving child
10.
LT2: I want to find the average speed of a triathlon race. What steps would I take?
a)
add up total distance, add up total time, divide total distance by total time
b)
add up total distance, add up total speed, divide distance by speed
c)
Add up total time and subtract total distance
11.
LT4: The graph shows Ashley riding her bike to Maria's house.
What is occurring from point A to point B?
What is occurring from point A to point B?
a)
they are traveling at a constant speed
b)
they are decreasing in speed
c)
they stopped to take a break
12.
LT4: The graph shows Ashley riding her bike to Maria's house.
What was her average speed for the ENTIRE trip?
What was her average speed for the ENTIRE trip?
a)
1600 m/min
b)
200 m/min
c)
160 m/min
13.
LT5: The rate at which velocity CHANGES is:
a)
acceleration
b)
speed
c)
direction
d)
physics
14.
What is the unit to MEASURE force?
a)
Kilogram
b)
Meter
c)
Pascal
d)
Newton
15.
What is the net force?
a)
30 N
b)
25 N
c)
5 N
d)
55 N
16.
If these teams are pulling with the same amount of force what will happen?
a)
The boy in blue will win.
b)
They will not move at all.
c)
The boy in red will win.
d)
Both will fall down.
17.
Forces that have a net force of zero
a)
Balanced force
b)
Unbalanced force
18.
What will cause an object to move?
a)
Applied forces
b)
Balanced forces
c)
Unbalanced forces
19.
This is an example of what kind of force?
a)
Balanced Force
b)
Pushing Force
c)
Gravity Force
d)
Unbalanced Force
20.
A push or pull that causes a change in motion
a)
Friction
b)
Gravity
c)
Force
d)
Mass
21.
When forces are _________ the object DOES NOT move.
a)
unbalanced
b)
balanced
c)
heavy
d)
light
22.
What is the net force of an object that is not moving?
a)
0 N
b)
100 N
c)
Upward force
d)
10 N
23.
Calculate the Net Force.
a)
40N, Left
b)
40N, Right
c)
0N, Balanced
d)
75N, Right
24.
Which could be an example of an unbalanced force?
a)
A plate sitting on a dining table
b)
A ball at the top of a hill that is not moving
c)
Earth orbiting the Sun
d)
A baseball that has been thrown to home plate.
25.
What is the net force?
a)
30 N left
b)
25 N right
c)
5 N left
d)
55 N right
26.
Which force produces a change in motion?
a)
unbalanced force
b)
balanced force
c)
gravitational force
d)
frictional force
27.
What is the standard unit force is measured in?
a)
Newtons
b)
pounds
c)
grams
d)
meters
28.
Which has more Inertia? (so need more force to move)
a)
Truck
b)
Ant
c)
A cat
d)
A skateboard
29.
What is Newton's Third Law?
a)
Object in motion stays in motion and an object at rest stays at rest unless acted on by a outside force
b)
Force = mass x acceleration
c)
For every action there is an equal and opposite reaction
30.
Who is the scientist who came up with the Laws of Motion?
a)
Sir Issac Newton
b)
The Greeks
c)
John Dalton
d)
Sir John Newt
31.
What law of motion does this picture represent?
a)
Newtons 1st law
b)
Newtons 4th law
c)
Newtons 3rd law
d)
Newtons 2nd law
32.
What law of motion does this picture represent?
a)
Newtons 3rd law
b)
Newtons 4th law
c)
Newtons 1st law
d)
Newtons 2nd law
33.
Speed =
a)
distance / time
b)
time / distance
c)
distance * time
34.
Change in speed over a given period of time is
a)
velocity
b)
motion
c)
speed
d)
acceleration
35.
When something has speed in a certain direction it is called ___________.
a)
motion
b)
position
c)
velocity
d)
speed
36.
LT4: The graph shows Ashley riding her bike to Maria's house.
What is occurring from point A to point B?
What is occurring from point A to point B?
a)
they are traveling at a constant speed
b)
they are decreasing in speed
c)
they stopped to take a break
37.
LT5: What is velocity?
a)
Time + Distance
b)
Speed in a given direction
c)
A fast dinosaur
d)
The direction a storm is moving
38.
The graph represents
a)
no motion
b)
Constant velocity
c)
Acceleration
d)
negative acceleration
39.
The graph respresents
a)
No motion
b)
Constant Velocity
c)
Acceleration
d)
Deceleration
40.
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
41.
Density is...
a)
the amount of mass in an object
b)
the amount of space an object takes up
c)
the amount of mass in a given space
d)
the weight of an object
42.
What units can be used to express density?
a)
g/mL
b)
grams
c)
millimeters
d)
milliliters
43.
If the density of a bar of gold is 19.3 g/cm3and you cut it into 4 pieces, what is the density of each piece of gold?
a)
4.825 g/cm3
b)
9.65 g/cm3
c)
19.3 g/cm3
d)
38.6 g/cm3
44.
If an object has a density of .6 g/mL and you put it into water, will it sink or float?
a)
sink
b)
float
45.
Which liquid is the least dense?
a)
oil
b)
water
c)
syrup
d)
plastic bottle
46.
Frank has a paper clip. It has a mass of 9g and a volume of 3cm3. What is its density?
a)
3 g/cm3
b)
1/3 g/cm3
c)
27 g/cm3
d)
39 g/cm3
47.
What is buoyant force?
a)
An upward force exerted by fluids on an object.
b)
An downward force exerted by fluids on an object.
48.
Archimedes' Principle states that...
a)
The buoyant force acting on an object equals the volume of the fluid displaced by the object.
b)
The buoyant force acting on an object equals the weight (force of gravity) of the fluid displaced by the object.
c)
The buoyant force acting on an object will always be equal.
49.
True or False: Buoyancy is an upwards force measured in Newtons.
a)
True
b)
False
50.
What is the name of the weather instrument?
a)
Barometer
b)
Thermometer
c)
Psychrometer
d)
Anemometer
51.
What are the units for pressure?
a)
pascals
b)
Newtons
c)
kilograms
d)
meters2
52.
What happens to pressure as the atmosphere gets "deeper"?
a)
stays the same
b)
decreases
c)
increases
53.
Which one of these exerts more pressure?
a)
water
b)
air
54.
A force exerted over a distance to move an object is ______________________.
a)
power
b)
work
c)
momentum
d)
Watt
55.
A 5000N block is lifted 10 m. How much work was done?
a)
50000 J
b)
5000 J
c)
500 J
d)
50 J
56.
In which of these cases is work being done?
a)
A student sleeps
b)
A student pushes a locked door that does not move
c)
a student carries his chair into another room
d)
A student sits on the carpet
57.
How far does a car that weighs 5,000 N go if 18,000 J of work is done on it?
a)
3.8 m
b)
3.7 m
c)
3.2 m
d)
3.6 m
58.
The amount of work done in a certain amount of time is known as
a)
work
b)
effort force
c)
resistance force
d)
power
59.
The more POWER you use to move an object, the more work you do.
a)
True
b)
False
60.
If a group of workers can apply a force of 1,000 Newtons to move a crate 20 meters, what amount of work will they have accomplished?
a)
20,000 J
b)
200 J
c)
2,000 J
d)
20 J
61.
How much time is needed to produce 720 Joules of work if 90 watts of power is used?
a)
0.125 s
b)
8 s
c)
64800 s
d)
80 s
62.
What is the equation for power?
a)
P = Work/time
b)
P = Force/time
c)
P = time/distance
d)
P = Work * time
63.
P=25 watts
W=5000 Joules
t=???
W=5000 Joules
t=???
a)
200 sec
b)
0.0005 s
c)
125000 s
d)
125 s
64.
True or false: when the distance an object moves is zero the work done on the object is also zero.
a)
True
b)
False
65.
How much work is done on a vacuum cleaner pulled 3m by a force of 50N at an angle of 30-degrees above the horizontal?
a)
50J
b)
80J
c)
130J
d)
240J
66.
Power is defined as the quantity that measures the rate at which _____ is done or energy is transformed.
a)
energy
b)
time
c)
work
d)
elasticity
67.
What is the potential energy done in lifting a 50kg barbell 5.8m above the floor?
a)
50J
b)
9.81J
c)
2845J
d)
58J
68.
The unit used to measure power is the
a)
Watt
b)
Newton
c)
Joule
d)
Newton*meter
69.
What is the equation for work?
a)
W = mass * acceleration
b)
W = force * distance
c)
W = force/distance
d)
W = speed/time
70.
If 68 Joules were necessary to move a 4 Newton crate, how far was the crate moved?
a)
272 m
b)
17 m
c)
4.05 m
d)
272 cm
71.
If 68 W of power is produced in 18 seconds, how much work is done?
a)
1,224 J
b)
0.264 J
c)
3.77 J
d)
12.24 J
72.
Work done = Force x _________
a)
a. distance
b)
b. acceleration
c)
c. velocity
d)
d. speed
73.
How much power is the tractor that drags a plow with a force of 500 N a distance of 10 meters in 20 seconds?
a)
250 Watts
b)
250 Joules
c)
100,000 Watts
d)
100,000 Joules
74.
How much work is done in holding a 15 N sack of potatoes while waiting in line at the grocery store for 3 minutes?
a)
15 J
b)
45 J
c)
0 J
d)
5 J
75.
What is the unit for mass?
a)
Kilogram (Kg)
b)
Newton (N)
c)
Joule (J)
d)
Watt (W)
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