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Review #3 - Semester 2 Final: Energy and Electricity

Total questions: 56

Worksheet time: 48mins

Name
Class
Date
1.

The _________________energy of an object increase with its height.

a)

chemical potential

b)

kinetic

c)

thermal

d)

gravitational potential

2.

Anything with kinetic energy must be

a)

lifted above the Earth's surface

b)

in motion

c)

at rest

d)

changing direction

3.

Energy stored in food, batteries and anything that will burn would be considered

a)

chemical potential

b)

kinetic

c)

thermal

d)

gravitational potential

4.

Plants use photosynthesis to convert Sunlight into __________________________.

a)

gravitational potential energy

b)

chemical potential energy

c)

thermal energy

d)

mechanical energy

5.

This type of energy stays constant and does not change during energy transformations.

a)

potential energy

b)

kinetic energy

c)

mechanical energy

d)

solar energy

6.

An example of kinetic energy?

a)

a book sitting on a shelf

b)

hat and gloves on a table

c)

cars parked in a parking lot

d)

a car droving down the street

7.

Depends on both the height and the mass of an object.

a)

radiant

b)

kinetic

c)

chemical

d)

gravitational potential

8.

An object has a velocity of 9 m/s and a mass of 10 kg. What is the kinetic energy of the object?

a)

90 J

b)

405 J

c)

882 J

d)

1,764 J

9.

A falling object.

a)

GPE goes up, KE goes down.

b)

GPE goes up, KE goes up

c)

GPE goes down, KE goes down

d)

GPE goes down, KE goes up

10.

A radio produces which energy transformations?

a)

They convert electrical energy to thermal energy.

b)

They convert electrical energy to sound energy.

c)

They convert mechanical energy to electrical energy

d)

They convert heat energy to electrical energy.

11.

The picture to the right shows a pendulum swinging, starting at point A. The ptential energy of the pendulum would be the greatest at

a)

point A

b)

point B

c)

point C

d)

both A and C

12.

Energy of motion

a)

kinetic energy

b)

gravitational potential energy

c)

mechanical energy

d)

thermal energy

13.
A 70 kg runner has a velocity of 5 m/s. Her kinetic energy is
a)
875 J
b)
175 J
c)
1750 J
d)
350 J
14.
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
15.

A 5 kg ball is lifted 6 m above the ground. It's gravitational potential energy is

a)

30 J

b)

294 J

c)

11 J

16.

What is the potential energy of a 10 kg apple that is sitting on a 1.5 m high tree branch?

a)

15 J

b)

147 J

c)

11.25 J

d)

73.5 J

17.

An 8 kg toddler is running at a speed of 10 m/s. How much energy does she have?

a)

400 J

b)

80 J

c)

800 J

d)

450 J

18.

Kinetic Energy of wind is transformed into _____ energy in a windmill.

a)

Solar

b)

potential

c)

Electrical

19.

Some students observing a classroom device being used, noticed the following energy transformations.

Chemical → Electrical → light

Which device were the students most likely observing?

a)

A triple beam balance measuring an object’s mass.

b)

A pencil sharpener plugged into a wall outlet.

c)

A projector displaying a diagram on the screen.

d)

A working flashlight used to light up a dark corner.

20.

Which type of energy transformation occurs when a car drives?

a)

chemical → thermal → mechanical

b)

chemical → electrical → light

c)

thermal → chemical → light

d)

chemical → electrical → chemical

21.
The Theory of the Conservation of Energy states -
a)
Energy can be created, just not destroyed. It changes its form from one type to another.
b)
Energy can never be created nor destroyed. It can only change its form from one type to another.
c)
The total energy in our Universe changes, as different forms of energies can be transformed from each other under certain circumstances.
d)
Energy transformations do not passively occur in our lives, rather we actively make use of energies and transform energies.
22.

Solar Panels convert solar energy into _____ Energy.

a)

Mechanical

b)

Solar

c)

Sound

d)

Electrical

23.

In the picture, the stove transforms electrical Energy into _____ Energy.

a)

Thermal

b)

Solar

c)

Electrical

d)

None

24.

The _________________energy of an object increases with its velocity

a)

chemical potential

b)

kinetic

c)

thermal

d)

gravitational potential

25.

An example of Potential energy?

a)

a book sitting on a shelf

b)

boy running

c)

a car droving down the street

26.

Stored energy based on height

a)

kinetic energy

b)

gravitational potential energy

c)

mechanical energy

d)

thermal energy

27.

Energy stored in chemical bonds

a)

kinetic energy

b)

gravitational potential energy

c)

chemical potential energy

d)

thermal energy

28.

The equation to find potential energy is

a)

PE=1/2mv2

b)

PE=ham or PE =mgh

c)

PE=1/2kx2

d)

PE=Fd

29.

What is current measured in?

a)

Ω (Ohms)

b)

V (Volts)

c)

A (Amps)

d)

W (Watts)

30.

What is resistance measured in?

a)

Ω (Ohms)

b)

V (Volts)

c)

A (Amps)

d)

W (Watts)

31.

Electricity that flows in a closed path is called a

a)

path

b)

current

c)

circuit

d)

light

32.

Current times Resistance equals

? =I X R

a)

Power

b)

Voltage

c)

Amperage

d)

Ohm

33.

Voltage divided by Resistance

? = V / R

a)

Current

b)

Power

c)

Ohms

d)

Watts

34.

How many Volts would we need to produce a current flow of 8 Amps through a 6 Ohm resistor

a)

14 volts

b)

1.33 volts

c)

0.75 volts

d)

48 volts

35.

What would the resistance be if a 7.5 Amp draw was present with the engine running and the charging system producing 15 Volts

a)

22.5 Ohms

b)

112.5 Ohms

c)

0.5Ohms

d)

2 Ohms

36.

What voltage is needed to cause a 50A current flow through a 10Ω resistor?

a)

5 V

b)

500 V

c)

0.2 V

d)

60 V

37.

What word means how fast the electrons flow.

a)

Current

b)

Voltage

c)

Resistance

d)

Power

38.
Energy produced by the movement of electrons.
a)
electricity
b)
motion
c)
open circuit
d)
conductor
39.

Material that allows electric current to flow through easily.

a)

electromagnetic field

b)

conductor

c)

open circuit

d)

insulator

40.

Material that PREVENTS electric current from flowing.

a)

electromagnetic field

b)

electric current

c)

insulator

d)

conductor

41.

An invisible force surrounding electrical charges that can allow electrons to apply a force over a distance.

a)

open circuit

b)

electric field

c)

closed circuit

d)

electricity

42.
Opposite charges ______ each other
a)
Attract
b)
Repel
c)
Do nothing
43.

Static electricity occurs because...

a)

of thunder

b)

of humid air

c)

of neutral particles adding up

d)

of a buildup of charges on an object.

44.

Two storm clouds rub against each other giving one cloud a positive charge and one a negative charge. This is an example of charging by

a)

Conduction

b)

Convection

c)

Friction

d)

Induction

45.

A charged balloon is brought near an electroscope and DOES NOT touch the electroscope. The foil in the electroscope moves. This is an example of charging by

a)

Conduction

b)

Convection

c)

Friction

d)

Induction

46.

If a negatively charged rod touches a conductor, the conductor will be charged by what method?

a)

Friction

b)

Conduction

c)

Induction

d)

Convection

47.

What charge does an electron have?

a)

negative (-)

b)

positive (+)

c)

neutral or no charge (0)

48.
If an object has the same number of positive and negative charges, its electrical charge is...
a)
positive
b)
negative
c)
neutral or no charge
d)
opposite
49.
Does this show attraction or repulsion? 
a)
attract
b)
repel
50.
What part of a circuit stops the current?
a)
wire
b)
switch
c)
battery
d)
light
51.
What material is a good conductor?
a)
copper
b)
wood
c)
rubber
d)
plastic
52.

What material is an insulator?

a)

copper

b)

silver

c)

gold

d)

plastic

53.
What is true about magnets?
a)
opposite poles repel
b)
opposite poles attract
c)
only the north pole picks up nails
d)
only the north pole works
54.
A type of circuit where each component is connected, one after the other, in a SINGLE loop. 
a)
series circuit
b)
parallel circuit
55.
Name the following symbol used in the drawing of a circuit. 
a)
battery
b)
switch
c)
motor
d)
light bulb
56.
An electric current can move along more than one path in a.....
a)
Series circuit
b)
Parallel circuit

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