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Work-Energy-Electricity Unit Review

Total questions: 62

Worksheet time: 2hrs 0mins

Name
Class
Date
1.

What is needed to calculate work?

a)

time and distance

b)

speed and distance

c)

force and direction

d)

acceleration and velocity

2.

Is this an example of work?

a)

Yes

b)

No

3.

What is the unit of measurement for work?

a)

meters

b)

newtons

c)

m/s

d)

Joules

4.

Is this an example of work?

a)

Yes

b)

No!

5.

500 J of work is done by a person who uses a force of 50N to move a box, how far does it go?

a)

10 m

b)

0.1 m

c)

25,000 m

d)

10 J

6.

Newtons are the unit for _____________.

a)

Work

b)

Distance

c)

Acceleration

d)

Force

7.

A push or a pull

a)

Work

b)

Force

c)

Acceleration

d)

Speed

8.

For work to be done on an object, the direction and force have to be going the same direction.

a)

True

b)

False

9.

Picking up a box is an example of____________

a)

Work

b)

Not Work

10.

You exert 200 J of work by pulling on an object with 20 N of force. What distance is the object moved?

a)

.01 m

b)

10 m

c)

10 J

d)

4,000 m

11.

Energy is

a)

stored work

b)

is destroyed when used

c)

can not be changed into another form of energy

d)

measured in newtons

12.

_____________ is the rate of doing work.

a)

Conservation of energy

b)

Joules

c)

Energy

d)

Power

13.

Power is measured in ___________.

a)

meters

b)

joules

c)

newtons

d)

watts

14.

The law of Conservation of Energy says________

a)

energy is constantly created

b)

energy can not be created or destroyed instead it changes from one form to another

c)

energy can not change forms

15.

A 10 kg cat runs across the room with a speed of 5 m/s. How much kinetic energy does the cat have?

a)

50 Joules

b)

2 Joules

c)

250 Joules

d)

125 Joules

16.

Which of the following has more kinetic energy?

a)

A 1000 kg car moving at 10 m/s

b)

A 4000 kg semi truck moving at 5 m/s

c)

They have the same kinetic energy

17.

A 2 kg book is sitting on a shelf 5 meters from the ground. How much gravitational potential energy does the book have? (To make things easier for now, use g = 10 m/s2)

a)

2 Joules

b)

10 Joules

c)

50 Joules

d)

100 Joules

18.

Which has more gravitational potential energy?

a)

A 0.25 kg apple sitting on a countertop 1 meters off the ground

b)

A 1000 kg car sitting the driveway on the ground.

c)

They have the same gravitational potential energy

19.
The energy of moving electrons
a)
A. Energy
b)
B. Energy Conversion
c)
C. Chemical Energy
d)
D. Electrical Energy
20.
Where is the potential energy the greatest?
a)
A
b)
B
c)
C
d)
D
21.
Energy from light waves.
a)
Radiant Energy 
b)
Chemical Energy 
c)
Nuclear Energy 
d)
Radiation 
22.

A student is holding the end of a pendulum. The student releases the pendulum. What energy transfers are taking place?

a)

potential energy is transferred to kinetic energy

b)

chemical energy to thermal energy

c)

mechanical energy to chemical energy

d)

kinetic energy is tranferred to potential energy

23.
Energy due to motion is ____________ energy. 
a)
Potential 
b)
Energy
c)
Kinetic
d)
Friction
24.
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 
25.

The faster an object moves, the ________ kinetic energy it has.

a)

more

b)

less

26.

Which of the following is stored energy that exists based on the position of an object?

a)

chemical energy

b)

thermal energy

c)

kinetic energy

d)

gravitational potential energy

27.

Which energy transformation below occurs in a blow dryer?

a)

electrical ----> thermal

b)

electrical -----> chemical

c)

chemical -----> thermal

d)

thermal ------> electrical

28.

Which is an example of potential energy?

a)

A child is hopping down the sidewalk.

b)

A horse is galloping in a field.

c)

A person is sitting on a horse.

d)

A car is driving on the street.

29.
What kind of energy does this device use?
a)
Chemical
b)
Electrical
c)
Thermal
d)
Chemical
30.
What kind of energy is represented in the picture?
a)
Thermal
b)
Chemical
c)
Sound
d)
Nuclear
31.
A battery converts what type of energy to another?
a)
sound to kinetic
b)
light to heat
c)
mechanical to electrical
d)
chemical to electrical
32.

What is the energy conversion when a wind turbine turns to provide energy to a power grid?

a)

electrical to potential

b)

potential to kinetic

c)

kinetic to electrical

d)

nuclear to heat

33.
What is a closed path for electrons to flow through?
a)
static electricity
b)
circuit
c)
amperes
34.
Identify the conductor below.
a)
cloth rag
b)
plastic bottle
c)
gold ring
35.
Identify the insulator below.
a)
aluminum foil
b)
paperclip
c)
rubber eraser
36.
Thicker wires have _______ resistance than thinner wires.
a)
more
b)
less
c)
the same
37.
Electric current is measured in ______.
a)
Watts
b)
Volts
c)
Amperes
38.
As the resistance in a circuit increases, the electric current __________.
a)
increases
b)
decreases
c)
stays the same
39.
Which formulas represents Ohm's law?
a)
V=IR
b)
R=IV
c)
I=RV
40.
Which subatomic particles have a positive charge?
a)
neutrons
b)
electrons
c)
protons
41.
What is the unit for resistance?
a)
Volts
b)
Amperes
c)
Ohms
42.
How many volts are in a circuit with a battery that has a resistance of 10 Ohms and a current of 2 Amps? 
a)
.5 Volts
b)
5 Volts
c)
20 Volts
43.
Electricity is the flow of _________.
a)
protons
b)
neutrons
c)
electrons
44.
What type of circuit is pictured?
a)
series
b)
Parallel
45.
What type of circuit is pictured?
a)
series
b)
parallel
46.
Which type of current comes from a battery?
a)
alternating current (AC)
b)
direct current (DC)
47.

What are the three properties of an electric circuit?

a)

Current, Voltage, Power

b)

Current, Voltage, Resistance

c)

Power, Voltage, Resistance

d)

Current, Power, Resistance

48.

What is the unit for voltage

a)

Watts

b)

Ohms

c)

Volts

d)

Amperes

49.

What is the symbol for resistance

a)

𝝮

b)

A

c)

V

d)

W

50.

What is the symbol for voltage

a)

𝝮

b)

A

c)

V

d)

W

51.

What is the symbol for current

a)

𝝮

b)

A

c)

V

d)

W

52.

What are facts about electricity

a)

Flow of electrons

b)

Provides heat

c)

Provides sound

d)

All of the above

53.
this circuit is .....?
a)
open
b)
parallel
c)
closed
d)
The cutest little circuit evah!
54.
What kind of circuit is this?
a)
series
b)
parallel
55.
What is the KE of a football which has a mass of 0.8 kg and is kicked at a velocity of 10 m/s.
a)
80 J
b)
3.2 J
c)
160 J
d)
40 J
56.
This is an example of a ______ circuit
a)
Series
b)
Parallel
c)
Open
d)
Dihexihedral
57.

What is the equivalent or total resistance (Re) across this circuit?

a)

3 kΩ

b)

10 kΩ

c)

13 kΩ

d)

18 kΩ

58.

How do you calculate total resistance in a parallel circuit?

a)

R1 + R2 + R3

b)

R1 - R2 - R3

c)

1/R1 +1/R2 + 1/R3 = 1/RT

d)

R1 = R2 = R3

59.

What is the equivalent resistance in this circuit?

a)

3 Ω

b)

5 Ω

c)

8 Ω

d)

9 Ω

60.

How to you calculate the total resistance in a series circuit?

a)

R1 + R2+ R3

b)

R1 - R2 - R3

c)

1/R1 + 1/R2 + 1/R3

d)

R1 = R2 = R3

61.

What is the equivalent resistance in the circuit?

a)

2 Ω

b)

3 Ω

c)

6 Ω

d)

9 Ω

62.

What is the current though R 1?

a)

1 A

b)

2 A

c)

4 A

d)

6 A

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