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WorksheetsEnergy Unit Test Review
Total questions: 50
Worksheet time: 40mins
Name
Class
Date
1.
What does the strength of gravity between two objects depend upon?
a)
Mass & distance
b)
Mass & weight
c)
Gravity & inertia
d)
Inertia & mass
2.
Luke Skywalker has a mass of 13 kg on earth. Find his force Endor moon. Acceleration due to gravity of 2 ms2.
a)
254.8 N
b)
13 kg
c)
26 N
d)
127.4 kg
3.
Determine the momentum of 1000-kg car moving northward at 20 m/s.........
a)
20000 N
b)
20000 Joules
c)
20000 Kg * m/s
d)
20000 kg * m/s north
4.
The definition of momentum is
a)
Mass in Motion
b)
The size of an object
c)
The velocity of an object
d)
A comparison between two objects
5.
The equation to calculate momentum is
a)
p=mv
b)
p=1/2mv2
c)
p=mgh
d)
p=mg
6.
A spring with spring constant 4 N/m is compressed by 0.25 m. How much energy is stored in the spring?
a)
1 J
b)
0.25 J
c)
0.125 J
d)
16 J
7.
At which point is potential energy greatest
a)
W
b)
X
c)
Y
d)
Z
8.
As a pendulum swings from its highest to lowest position, what happens to its kinetic and potential energy?
a)
Both the potential energy and kinetic energy decrease
b)
The potential energy decreases while the kinetic energy increases
c)
The kinetic energy decreases while the potential energy increases
d)
Bothe the potential energy and kinetic energy increase
9.
When a pendulum swings, at which point is kinetic energy highest:
a)
1
b)
2
c)
3
d)
4
10.
What is the unit used to measure work?
a)
Joule
b)
Watt
c)
Newton
d)
Pascal
11.
Food has _________ energy.
a)
Potential
b)
Kinetic
c)
None of the above
d)
All of the above
12.
How much kinetic energy does a person of mass 50kg running at 3m/s have?
a)
225,000 J
b)
225 J
c)
75,000 J
d)
75 J
13.
A 60 kg Ewok is travelling at a constant speed of 7 m/s. What is its kinetic energy in J?
a)
1470 J
b)
2100 J
c)
1.47 J
d)
21 J
14.
The energy from the sun is transmitted through movement of electromagnetic waves by
a)
conduction
b)
convection
c)
contraction
d)
radiation
15.
The transmission of energy by two objects touching is called
a)
conduction
b)
convection
c)
contraction
d)
radiation
16.
The cycle that powers the ocean currents, weather, and tectonic plates it called
a)
conduction current
b)
radiation
c)
condition current
d)
convection current
17.
A 20 kg bike accelerates at 10 m/s2. what was the force
a)
25
b)
200 N
c)
20 N
d)
10 N
18.
45 m/s2 is the...
a)
Mass
b)
Force
c)
Acceleration
d)
weight
19.
The Law of Conservation of Energy states:
a)
Energy can created or destroyed but not transformed
b)
Energy cannot be created or destroyed, it can only be transformed
c)
Energy can't be created, destroyed or transformed
20.
Why does the moon have less gravity than the Earth?
a)
It is far away from the Earth
b)
It is farther away from the Sun
c)
The moon is made of cheese
d)
It has less mass
21.
When a pendulum swings, at which point is kinetic energy greatest:
a)
1
b)
2
c)
3
d)
4
22.
When a pendulum swings, at which point/s is potential energy at its greatest
a)
1 and 5
b)
2 and 4
c)
3
23.
When a pendulum swings, at which point/s is the least amount of kinetic energy:
a)
1 and 5
b)
2 and 4
c)
3
24.
When a pendulum swings, at which point is the least amount of potential energy present?
a)
1
b)
2
c)
3
d)
4
25.
Friction involves objects that are in contact with each other.
a)
True
b)
False
26.
When energy changes from one type to another it is called transfer
a)
true
b)
false
27.
Heat and Light are forms of kinetic energy
a)
True
b)
False
28.
The energy an object has because of its location is called elastic potential energy.
a)
True
b)
False
29.
The energy an object has because of its motion is called the object's kinetic energy.
a)
True
b)
False
30.
When a meteor strikes the earth all of the meteor's energy is destroyed.
a)
True
b)
False
31.
If a 0.06kg bullet has a velocity of 1,000m/s, what is its kinetic energy?
a)
30,000J
b)
60J
c)
120J
d)
16,667J
32.
A trampoline stretches with 130 N/m to 3m. What is its energy?
a)
390J
b)
43.33J
c)
585J
d)
0.023J
33.
It takes an elastic force of 678 N/m to stretch a spring over .43m, what is the stored energy?
a)
291.54J
b)
1,576.74J
c)
0.00063J
d)
62.68J
34.
A 5kg rock rests at a height of 12m. Calculate its potential energy.
a)
1176J
b)
23.52J
c)
6.12J
d)
588J
35.
A ball has a mass of 0.9kg and is thrown with a velocity of 4.9m/s. What is its kinetic energy?
a)
10.8J
b)
8.82J
c)
4.41J
d)
12.3J
36.
How much work is done when a 22N object is raised vertically 4.2 meters
a)
12.5J
b)
92.4J
c)
0.08J
d)
400J
37.
If it takes 300J to raise a rock vertically 5.0 meters, what is the mass of the rock?
a)
1500kg
b)
153.1kg
c)
60kg
d)
6.12kg
38.
A 100kg object is lifted into the air. If 300J of energy are used, how high is the object?
a)
3,061m
b)
294,000m
c)
0.306m
d)
3m
39.
A boy uses 2 N of force to pick up a heavy weight, he cannot pick it up. What work was done?
a)
2J
b)
1J
c)
0.5J
d)
0J
40.
Leo has a mass of 25kg. The moons mass is 7.34x1022. If the moon is 3.8x108 meters away from the center of the Earth. What is the gravitational force between Leo and the moon?
a)
8.48x 10^-4N
b)
64747.70N
c)
6.97x10^32N
d)
5N
41.
What is the definition of CONDUCTION?
a)
When heat is transferred from objects like rays of light or electromagnetically.
b)
a hot liquid or air that expands, becomes less dense, and rises or becomes more dense, and sinks.
c)
When heat transfers from objects that are touching.
d)
When heat transfers through the heater or AC in your house.
42.
What is the definition of CONVECTION
a)
When heat transfers through waves.
b)
When heat transfers from objects that are touching.
c)
a hot liquid or air that expands, becomes less dense, and rises or becomes more dense, and sinks.
d)
Heat traveling from the sun
43.
What kind of heat transfer happens when the sun is heating your body?
a)
Conduction
b)
Radiation
c)
Convection
d)
Density
44.
Warm air rises and the cool air sinks demonstrates this type of heat transfer.
a)
conduction
b)
convection
c)
radiation
d)
Insolation
45.
The baby chickens are kept warm from the heat lamps demonstrates this type of heat transfer.
a)
conduction
b)
convection
c)
radiation
46.
Heat transfers from an area of ____temperature to an area of ___ temperature.
a)
high to low
b)
low to high
c)
high to high
d)
It can travel high to low and low to high.
47.
Walking on the warm sand sand with your bare feet demonstrates this type of heat transfer.
a)
conduction
b)
convection
c)
radiation
48.
Johnny accidentally grabbed the handle of the hot pot.
a)
conduction
b)
convection
c)
radiation
49.
A group of friends gather around a fire to stay warm.
a)
conduction
b)
convection
c)
radiation
50.
What are the two types of Mechanical Energy? (ME)
a)
Kinetic and Potential Energy
b)
Kinetic and Nuclear Energy
c)
Potential and Chemical Energy
d)
Thermal and Kinetic Energy
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