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Energy NC Final Review

Total questions: 75

Worksheet time: 2hrs 3mins

Name
Class
Date
1.

What is energy?

a)

moving energy

b)

stored energy

c)

renewable energy

d)

The ability to do work.

2.

What is potential energy?

a)

moving energy

b)

stored energy

c)

renewable energy

d)

non renewable energy

3.

What is kinetic energy?

a)

moving energy

b)

potential energy

c)

stored energy

d)

renewable energy

4.

When energy changes from one form to another, we call it a _______________.

a)

transformation

b)

creation

c)

expiration

d)

compilation

5.

The picture shows what type of transformation

a)

Electrical to mechanical

b)

light to electric

c)

electrical to light

d)

light to light

6.
According to the Law of Conservation of Energy...
a)
energy changes form
b)
energy can be created and destroyed
c)
energy flows from one material to the next
d)
energy cannot be created or destroyed
7.

What type of energy does a rock have when it is sitting at the edge of a cliff.

a)

Potential

b)

Kinetic

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.

Energy form stored by an object due to it being compressed or stretched

a)

elastic

b)

motion

c)

chemical

d)

gravitational

10.

Energy form stored in bonds between atoms and molecules

a)

chemical

b)

nuclear

c)

thermal

d)

electromagnetic

11.

Energy form characterized by the flow of electrons

a)

electrical

b)

electromagnetic

c)

elastic

d)

chemical

12.

Energy form characterized by the movement of energy in waves through empty space

a)

electromagnetic

b)

electrical

c)

chemical

d)

nuclear

13.

Energy form stored in an object based upon its position

a)

gravitational

b)

nuclear

c)

thermal

d)

chemical

14.

Energy form stored in the center of an atom

a)

nuclear

b)

chemical

c)

electromagnetic

d)

thermal

15.

Energy form characterized by waves transmitted through matter

a)

sound

b)

electromagnetic

c)

thermal

d)

chemical

16.

Energy an object has due to its motion

a)

motion (mechanical)

b)

thermal

c)

chemical

d)

gravitational

17.

Energy form based on the movement of molecules and atoms within an object

a)

thermal

b)

elastic

c)

chemical

d)

nuclear

18.
The faster an object moves, the ________ kinetic energy it has. 
a)
more
b)
less
c)
none of the above
d)
all of the above 
19.
Gravitational potential energy depends on the ________ and ________ of the object. 
a)
Height and mass
b)
Friction and movement
c)
Mass and Movement
d)
Height and Friction 
20.
At which point is potential energy greatest?
a)
W
b)
X
c)
Y
d)
Z
21.
When a pendulum swings, at which point is kinetic energy highest?
a)
1
b)
2
c)
3
d)
4
22.
When a pendulum swings, at which point is potential energy at its greatest?
a)
1
b)
2
c)
3
d)
4
23.
Which point has the most potential energy?
a)
G
b)
f
c)
b
d)
a
24.
A 0.40 kilogram bird is flying at a constant speed of 8.0 m/s. What is the bird's kinetic energy ?
a)
3.2 J
b)
4.2 J
c)
2.0 J
d)
12.8 J
25.
A 2600 kilogram car is moving at a speed of 25 m/s. How much kinetic energy does the car have?
a)
427,500 J
b)
237,500 J
c)
437,500 J
d)
537,500 J
26.
2. The diagram to the right represents a diver’s motion from the top of a high diving board into a pool of water. At what point does the diver have the greatest kinetic energy and the least potential energy?
a)
1
b)
2
c)
3
d)
4
27.
A 60.0 kg person walks from the ground to the roof of a 74.8 m tall building. How much gravitational potential energy does she have at the top of the building?
a)
43982.4 J
b)
63982.3 J
c)
43962.4 J
d)
83942.4 J
28.
A pitcher throws a 0.145 kg baseball at a velocity of 30.0m/s. How much kinetic energy does the ball have?
a)
65.35 J
b)
87.25 J
c)
23.45 J
d)
65.25 J
29.
What does one newton exerted over a distance of one meter equal?
a)
One watt
b)
One hertz
c)
One volt 
d)
One joule 
30.
A kid applies a force of 70 N to a ball over 1.1 meters. How much work did he do on the ball? 
a)
77 J
b)
7.7 J 
c)
0.7 J 
d)
770 J 
31.
A weightlifter lifts two 300 newton weights 1.5 meters off the ground. How much work has he done?
a)
600 J 
b)
660 J
c)
900 J 
d)
1200 J 
32.
Simple machines make work easier by increasing what?
a)
The distance over which work is done 
b)
The force needed to do work 
c)
The time required to do work
d)
The acceleration of a massive object 
33.
You do 90 joules of work in 30 seconds. How much power have you generated?
a)
30 watts
b)
3 watts
c)
120 watts
d)
270 watts
34.
You move an 8-newton weight five meters in 4 seconds. How much power have you generated?
a)
160 watts
b)
10 watts
c)
6.4 watts
d)
17 watts
35.
Which of the following would produce the most power?
a)
A mass of 10 kilograms lifted 10 meters in 10 seconds 
b)
A mass of 10 kilograms lifted 10 meters in 5 seconds
c)
A mass of 5 kilograms lifted 10 meters in 5 seconds
d)
A mass of 5 kilograms lifted 5 meters in 10 seconds
36.
F=200 N
d=50 m
w=??
a)
4 J
b)
0.25 J
c)
250 J
d)
10,000 J
37.
If 150 Joules of work is needed to move a box 10 meters, what force was used? 
a)
1500 N
b)
15 N
c)
1.5 N
d)
150 N
38.
work is...
a)
energy from the sun
b)
a type of machine
c)
a force that moves an object
d)
a force that pulls you toward the earh
39.
What type of simple machine is found on the cap of a pickle jar?
a)
lever
b)
inclined plane
c)
pulley
d)
screw
40.
Which is an example of someone using a simple machine to do work?
a)
a boy runs across a football field
b)
a banker counts money
c)
a mother pushes a stroller up a ramp
d)
a girl eats a sandwich
41.
Jan is using a screwdriver, which is a type of ...
a)
a pulley
b)
a screw
c)
a lever
d)
a wheel and axle
42.

A boy uses this simple machine to lift a load. How does this machine help the boy to do work?

a)

by changing the direction

b)

by reducing total work

c)

by decreasing distance

d)

by reducing effort force

43.

Which ramp will require the least amount of force?

a)

A

b)

B

c)

C

d)

D

44.
What is the fixed point upon which a lever rotates?
a)
fulton
b)
fulcrum
c)
furmen
d)
falcon
45.

What is mechanical advantage?

a)

The advantage a machine has over a bicycle

b)

A measure of how much a simple machine reduces work

c)

A measure of when is the best time to use a simple machine

d)

the number of times a machine increases input force

46.

What is resistance (output) force?

a)

the force required by a machine in order to accomplish work (the force you put on the machine)

b)

The force that is exerted by a machine

c)

the force the machine exerts on a object

d)

the output work times the input distance

47.
Warm air over the beach rises while cooler, dense air from the ocean rushes in due to
a)
conduction
b)
convection
c)
radiation
48.
A toaster toasting bread is an example of 
a)
condensation
b)
conductio
c)
convection
d)
radiation
49.
Molecules in cold things move more _________
than in hot things.
a)
quickly
b)
slowly
c)
happily
d)
merrily
50.
In heat transfer, heat always flows from the _______________ substance to the _______________ substance.
a)
Hotter to colder
b)
Colder to hotter
c)
Hotter to hotter
d)
Colder to colder
51.
The type of heat transfer that happens through direct contact of molecules or particles with each other is ___________________.
a)
Convection
b)
Conduction
c)
Radiation
d)
insulation.
52.
The kind of heat transfer that travels through space in electromagnetic waves is ______________________.
a)
insulation.
b)
Radiation
c)
Conduction
d)
Convection
53.
Which of the following is the best example of conduction?
a)
A light bulb warming a lampshade
b)
An egg cooking in a frying pan
c)
Water boiling in a pot
d)
Gases circulating in the atmosphere
54.
Waves that require a medium are called 
a)
mechanical waves
b)
transverse waves
c)
light waves
d)
gamma rays
55.

What kind of wave is pictured below?

a)

compressional wave

b)

transverse wave

c)

sound wave

d)

mechanical wave

56.
What can electromagnetic waves travel through?
a)
mediums
b)
empty space
c)
solely solids
d)
both mediums and empty space
57.
What property of this wave is represented by the letter "A"
a)
amplitude
b)
crest
c)
trough
d)
wavelength
58.
What property of the wave is represented by the letter "B"?
a)
amplitude
b)
crest
c)
trough
d)
wavelength
59.
Which wave is pictured?
a)
Transverse
b)
Longitudinal
c)
Both
d)
Neither
60.
A wave carries...?
a)
energy only
b)
matter only
c)
energy and matter
d)
neither
61.
Which vocabulary term is used to identify the distance between points C & G?
a)
Amplitude
b)
Crest
c)
Frequency
d)
Wavelength
62.
Which wave in the diagram has the greatest frequency?
a)
1
b)
2
c)
3
d)
4
63.
Which wave in the diagram has the greatest wavelength?
a)
1
b)
2
c)
3
d)
4
64.
High energy waves have a ____. 
a)
high frequency
b)
low frequency
c)
small amplitude
d)
big wavelength
65.
One end of the rope is vibrated to produce a wave with a wavelength of .25 m.  The Frequency of the wave is 3.0 Hz.  What is the speed of the wave?
a)
3.00 m/s
b)
2.50 m/s
c)
.75 m/s
d)
1.25 m/s
66.
 A wave has frequency of 50 Hz and a wavelength of 10 m. What is the speed of the wave?
a)
500 m/s
b)
50 m/s
c)
5 m/s
d)
0.5 m/s
67.
 A wave has frequency of 5 Hz and a speed of 25 m/s. What is the wavelength of the wave?
a)
25 m
b)
125 m
c)
5 m
d)
25 m/s
68.
A wave has wavelength of 10 m and a speed of 340 m/s. What is the frequency of the wave?
a)
34 m/s
b)
3400 Hz
c)
3400 m/s
d)
34 Hz
69.
Which of the following lists the electromagnetic waves in order of decreasing frequency?
a)
X-rays, microwaves, infrared rays
b)
UV rays, visible light, x-rays
c)
infrared rays, microwaves, radio waves
70.
Which electromagnetic waves are used in devices such as heat lamps & TV remote controls?
a)
ultraviolet rays
b)
microwaves
c)
infrared rays
71.
Which of the following lists the electromagnetic waves in order of increasing wavelength?
a)
X-rays, visible light, radio waves
b)
gamma rays, microwaves, UV rays
c)
infrared rays, radio waves, x-rays
72.
Which electromagnetic waves help doctors detect broken bones inside your body?
a)
gamma rays
b)
x-rays
c)
ultraviolet rays
73.
The frequency of infrared waves is..
a)
1012 Hz
b)
1020 Hz
c)
104 Hz
d)
1015 Hz
74.
What is an example of a wave with a long wavelength and low frequency?
a)
Gamma rays
b)
Infrared
c)
Radio
d)
Visible light
75.
As the frequency of an electromagnetic wave increases, the amount of energy in that wave...
a)
increases.
b)
decreases.
c)
stays the same.

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