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Power Tech B Final

Total questions: 40

Worksheet time: 6hrs 3mins

Name
Class
Date
1.
A hydroelectric power plant generates electricity by using the energy of which of the following?
a)
Blowing wind
b)
Organic material
c)
Moving water
d)
Earth’s core
2.
Which of the following sources of energy is classified as an alternative energy source?
a)
Mined coal
b)
Geothermal heat
c)
Crude oil
d)
Natural gas
3.
All of the following are considered alternative energy sources EXCEPT –
a)
Wind
b)
Coal
c)
Biofuel
d)
Solar
4.
An energy company wants to build a hydroelectric power plant. Which of these characteristics of an area is most important to the development of a hydroelectric power plant? 
a)
The area has a cool, rainy climate.
b)
The area is located in a valley with very little wind and frequent heavy fog.
c)
The area has a river that flows rapidly from nearby mountains through a valley
d)
The area has no geysers or hot springs.
5.
Which of the following is NOT an alternative energy source?
a)
fossil fuels
b)
geothermal
c)
hydroelectric
d)
wind 
6.
Hot water is pumped up from deep inside Earth and is used to heat homes or to generate electricity. This describes...
a)
biofuels
b)
hydroelectric energy
c)
geothermal energy
d)
hot water heating
7.
What is one of the biggest disadvantages to wind turbines?
a)
They're big
b)
They can interfere with bird migration
c)
They're expensive
d)
It takes a long time to put one up and then maintain it
8.
Energy stored by plants hundreds of millions of years ago that are buried underground are the energy we find in...
a)
electricity
b)
fossil fuels
c)
natural gas
d)
geothermal
9.

What is/are the advantages of using nuclear power?

a)

A small amount of fuel can give a large amount of energy.

b)

Generating electricity by nuclear power gives off no air pollutants.

c)

Generating electricity by nuclear power produces radioactive nuclear waste.

10.

Which are the problems of using solar power?

a)

It provides unlimited supply of energy.

b)

A large piece of land is needed to place the solar cells.

c)

The solar cells do not work at night.

11.

Which energy source is used in the following power plant?

a)

Nuclear power

b)

Tidal power

c)

Geothermal power

d)

Hydroelectric power

12.

Which energy source is used in the following power plant?

a)

Nuclear power

b)

Tidal power

c)

Solar power

d)

Hydroelectric power

13.

Coal is a __________ energy resource.

a)

Renewable

b)

Non-renewable

14.

Give two ways you can reverse the direction of a basic dc motor?

a)

Reverse the current

b)

Keep the current the same

c)

Reverse the magnetic field

d)

Keep the magnetic field the same

15.

What was the name of the main character in the movie we watched

a)

Sam

b)

Frank

c)

Burt

d)

Ernie

16.

The motion in DC motor can be increased by the following factors... (you may choose more than one)

a)

Using a stronger magnet

b)

Increasing the potential difference

c)

Increasing the current

d)

Increasing the number of turns on the coil

17.
Aluminum is attracted to a magnet.
a)
True
b)
False
18.
Which part of a circuit allows electrical current to flow between the battery and light bulb?
a)
load
b)
power source
c)
resistor
d)
conductor
19.
This object transforms mechanical energy into electrical energy
a)
Circuit
b)
Generator
c)
Motor
d)
Battery
20.
Which of these pairs of devices operate in reverse of each other?
a)
generator and motor
b)
generator and electromagnet
c)
motor and electromagnet
d)
electromagnet and resistor
21.
What device turns electrical energy into mechanical energy?
a)
a solenoid
b)
a motor
c)
an electromagnet
d)
an electric generator
22.
Which of these can apply a force without actually touching an object?
a)
motor
b)
generator
c)
magnetic field
d)
turbine
23.
A coil of wire spinning around a magnet or a magnet spinning around a coil of wire can form___
a)
a permanent magnet
b)
an iron core
c)
a turbine
d)
an electric current
24.
This type of energy is stored in a battery 
a)
chemical
b)
mechanical
c)
electrical
d)
thermal
25.
This type of circuit allows for electricity to flow 
a)
closed
b)
open
c)
both
d)
neither
26.
This kind of circuit does not allow electricity to flow 
a)
open
b)
closed
c)
both
d)
neither
27.
This device is used to open or close a circuit
a)
battery
b)
wire
c)
switch
d)
solar cell
28.

Electricity can be transformed into this type of energy by connecting a circuit to a fan

a)
thermal
b)
chemical
c)
radiant
d)
mechanical
29.
Which of the following is a power source?
a)
battery
b)
solar cell
c)
fossil fuels
d)
all of these
30.

The type of energy measured in volts, moves in currents, can pass through metal

a)

waterwheel

b)

electricity

c)

reservoir

d)

generator

31.

A man made structure that controls the flow of a river

a)

electricity

b)

dam

c)

reservoir

d)

hydroelectric

32.

a large body of water that can be used as a source of water for a town

a)

reservoir

b)

dam

c)

waterwheel

d)

generator

33.

Which of the lists below describes the energy a TV has when it is turned on?

a)

sound and heat

b)

heat and light

c)

light, heat, and sound

d)

light and sound

34.

What can you do to make electromagnets stronger?

a)

Increase number of coils of wire.

b)

Increase number of batteries used.

c)

Both A and B.

d)

Neither A nor B.

35.

If you replace the paper clip with a plastic spoon, (look at picture) what happens?

a)
The bulb doesn't light
b)
The bulb is dimmer
c)
The wires get hot
d)
There is no change
36.
An incomplete circuit is shown.
To complete the circuit, a wire should be placed from —
a)
Point D to Point C
b)
Point B to Point C
c)
Point A to Point D
d)
Point B to Point D
37.

What is this tool?

a)

Slip joint Pliers

b)

Adjustable Pliers

c)

Needle Nose Pliers

d)

Duck Pliers

38.

What is the unit of Electrical Power?

a)

Joule

b)

Watt

c)

Where

d)

Amp

39.

What is the main environmental concern associated with nuclear energy generation?

a)

Air pollution

b)

Noise pollution

c)

Radioactive waste

d)

Water consumption

40.

What is the function of every generator on Earth?

a)

a. Changing wind energy into electrical energy

b)

b. Changing heat energy into electrical energy

c)

c. Changing mechanical energy into electrical energy

d)

d. Changing solar energy into electrical energy