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Islam Cycle-4 Quiz

Total questions: 71

Worksheet time: 6hrs 55mins

Name
Class
Date
1.

which part of an atom moves to create current?

a)

proton

b)

neutron

c)

electron

2.

which of the following is not a drawback of solar energy?

a)

sunlight does not have energy

b)

cost

c)

sun is not always out

d)

solar energy is diffuse and hard to collect

3.

which of the following is a drawback to wind energy?

a)

migration of birds being interrupted

b)

noise

c)

disrupts the landscape

d)

not available in all locations

4.

Which renewable energy does not require spinning a turbine?

a)

hydroelectric

b)

wind

c)

tidal

d)

photovoltaic cells

5.

if a tractor trailer truck is 20% efficient, what happened to the other 80%

a)

energy is destroyed

b)

energy is lost as heat

c)

the 80% is still in the gas tank

d)

energy is converted into matter

6.

Which example is NOT a renewable resource?

a)

Trees

b)

Wind

c)

Solar

d)

Uranium (Nuclear)

7.

What is one disadvantage of coal?

a)

Coal produces air pollution.

b)

There isn't a lot of coal left which makes it expensive.

c)

The world isn't using a lot of coal which makes it an undesirable job.

d)

You can only use it to roast hot dogs and cook hamburgers.

8.

What is one disadvantage of renewable energy?

a)

Electricity and power could become much cheaper.

b)

Third world countries could have affordable energy.

c)

Many people could become energy independent.

d)

Most sources are expensive to get started.

9.

How is geothermal energy harvested? (How do we get it?)

a)

solar panels collect the sunlight.

b)

The heat from the earth boils water to create steam.

c)

We pump it from the earth and refine it into gasoline.

d)

We drill for it and burn it like coal or wood.

10.

What is one disadvantage of using hydropower?

a)

Hydropower is a renewable energy resource. There are no disadvantages.

b)

The power is used as electricity to power large buildings instead of homes.

c)

Building dams can damage natural wildlife and water systems like lakes and rivers.

d)

Most of the time there isn't enough water power to create electricity.

11.

Crude oil must be refined before it can be used as fuel. What does "refined" mean?

a)

Taxed

b)

Created

c)

Purified

d)

Burned

12.

What are the 3 main fossil fuels?

a)

Coal, Oil, and nuclear fuel

b)

Coal, Oil, and Natural Gas

c)

Electricity, Gas, Petroleum

d)

Coal, Oil, Non-renewable Resources

13.
Fossil fuels are classified as nonrenewable because they.......
a)
require expensive equipment
b)
take millions of years to replace
c)
can be found all over 
d)
provide all the energy we use
14.

What is coal made of?

a)

decomposed plant remains

b)

decomposed sea creatures

c)

lava

d)

all of the above

15.
Which layer formed first?
a)
Rock Layer W
b)
Rock Layer X
c)
Rock Layer Y
d)
Rock Layer Z
16.

What conditions are needed to form coal?

a)

Heat and pressure

b)

Heat

c)

Moisture and pressure

d)

Cool and moist

17.

Why are fossils fuels so widely used?

a)

They are renewable so they won't run out.

b)

They pollution they produce is less compared to renewable energy sources.

c)

They are easy to obtain and process.

d)

They don't disrupt the environment when mined from the earth.

18.

What changes wind energy into electricity?

a)

Windmill

b)

Windsock

c)

Wind Turbine

19.

The diagram above shows a wind turbine. Which section of the wind turbine converts wind energy to electrical energy?

a)

blades

b)

generator

c)

rotor

d)

pitch system

20.

what does a wind turbine look like

a)
b)
21.

How do geothermal power stations work

a)

Cold water is heated up and the water power turbines under the water and turns it into electricity!

b)

Cold water is pumped down and the cold water meets the hot water from inside the earth to produce steam to power turbines then creating electricity !

c)

The hot water from inside the earth meets cold air and produces condensation which powers the turbines and turns it into electricity!

22.
3. What is a generator?
a)
A machine that creates radiation.
b)
A machine that turns mechanical into electrical energy.
c)
A type of wind energy
23.
4. Which of the following is one of the disadvantages of geothermal energy?
a)
Geothermal energy only works on windy days.
b)
Geothermal energy doesn't work everywhere since you need a volcano nearby.
c)
Geothermal does not work if there are no rivers or moving water nearby.
24.

The electricity in our house is

a)

AC

b)

DC

c)

BC

d)

AD

25.
current is measured in....
a)
volts
b)
amps
c)
watts
d)
mph
26.

An electric current that continually reverses direction over time is known as a(n)

a)

direct current

b)

alternating current

c)

simple current

27.

Moving a permanent magnet through a coil of wire will

a)

demagnetize the magnet

b)

the wire will become an electromagnet

c)

the magnet will become electrified

d)

a current will be generated in the wire

28.
A device that increases or decreases voltage in a power line is a ____.
a)
transformer
b)
generator 
c)
commutator
d)
motor
29.
Current that does NOT reverse direction is called ____. 
a)
magnetic current
b)
direct current
c)
circuit current
d)
alternating current
30.
The location of the strongest magnetic forces is the ____.
a)
magnetic domains
b)
magnetic fields
c)
magnetic poles
d)
electromagnets
31.
Current that reverses direction in a regular pattern is called ____. 
a)
direct current 
b)
circuit current
c)
magnetic current
d)
alternating current 
32.
The region around a magnet where the magnetic forces act is the ____.
a)
magnetic field
b)
magnetic pole
c)
magnetic domain
d)
electromagnetic pole
33.

The number of cycles that are completed per second is called the ________ and is measured in _________.

a)

frequency, Hertz

b)

wavelength, meters

c)

amplitude, meters

d)

period, seconds

34.

The period of a signal is 10 s. What is its frequency?

a)

10 Hz

b)

1 Hz

c)

0.5 Hz

d)

0.1 Hz

35.

A voltage signal makes 33 complete back and forth cycles of vibration in 11 seconds. It's frequency is:

a)

3.0 s

b)

3.0 Hz

c)

0.33 s

d)

0.33 Hz

36.
A boy notices that 45 complete waves travel past him in ninety seconds.  What is the frequency of these water waves?
a)
100 m
b)
1 Hz
c)
0.5 Hz
d)
1m/s
37.

In a thermal power station, where is steam produced?

a)

Furnace

b)

Boiler

c)

Turbine

d)

Transformer

38.

To which part is the turbine axle connected to?

a)

Transformer

b)

Generator

c)

Furnace

d)

Boiler

39.

What is the function of the transformer?

a)

To convert water to high pressure steam

b)

To rotate the turbine axle

c)

To increase the voltage produced by the generator

d)

To transform mechanical energy to electrical energy

40.

Which of the following rotates the turbine axle?

a)

steam

b)

water

c)

magnet

d)

brush

41.

Which part in a power station produces electrical energy?

a)

Turbine

b)

Boiler

c)

Generator

d)

Transformer

42.
Uses Uranium
a)
Hydroelectric
b)
Nuclear
c)
Oil
d)
Geothermal
43.
Energy transfer when coal is burnt in a coal power station
a)
Kinetic --> heat
b)
Heat --> chemical
c)
Chemical --> Heat
d)
Electric --> Light
44.

How long does it take to produce fossil fuels?

a)

hundreds of years

b)

thousands of years

c)

millions of years

d)

billions of years

45.

Why are we trying to use fossil fuelled power stations less?

a)

Gases produced are bad for the environment

b)

It is an expensive way of making electricity

c)

Fossil fuels are running out

d)

Its not very sunny in Wales

46.

Primary winding of a transformer is determined by _________.

a)

which winding has more turns

b)

which winding is nearer to the load

c)

which winding is connected to the source

d)

which side has the highest voltage

47.

What type of transformer is used to increase the voltage from power stations.

a)

Step-down transformer

b)

Step-up transformer

48.

Why transformers work with A.C. current but not D.C.

a)

A.C current produces changing magnetic field.

b)

D.C current produces changing magnetic field.

c)

D.C current is weak

d)

A.C current is powerful

49.

This picture is an example of a ________________.

a)

Motor

b)

Generator

c)

Step-up transformer

d)

Step-down transformer

50.

Ratio of voltages is equal to ratio of _______________________.

a)

number of iron sheets in core

b)

number of coil

c)

number of turns in coil

d)

number of electromagnetic

51.

A transformer has 100 turns in the primary coil and 25 turns in the secondary coil. When a 120 V is applied to the primary coil, what is the voltage in the secondary coil?

a)

480V

b)

30V

c)

20V

d)

450V

52.
If a secondary coil has 40 turns, and, a primary coil with 20 turns is charged with 50 V of potential difference, then potential difference in secondary coil would be
a)
50 V in secondary coil
b)
25 V in secondary coil
c)
60 V in secondary coil
d)
100 V in secondary coil
53.
In large generators in power plants, ___________ rotate inside a coil of wire to produce an electric current.
a)
Wind
b)
Water
c)
Magnets
d)
Circuits
54.
What is the transfer of electricity in a generator?
a)
Mechanical to Electrical 
b)
Physical to Potential 
c)
Electrical to Mechanical
d)
Yogurt to Light
55.
This picture is an example of a ___________
a)
Step- Up Transformer
b)
Step- Down Transformer
c)
Motor
d)
Generator
56.
Based on this picture, which side will have a higher voltage?
a)
Secondary
b)
Primary
c)
Both sides have the same voltage
d)
Cannot be determined
57.
An ideal transformer has 12 V input voltage with 10 turns on the primary (input) coil, The secondary coil has 100 turns. What is the secondary voltage?
a)
0.12 V
b)
1.20 V 
1.20 V
c)
12.0 V
d)
120.0 V
58.
The voltage across the primary coil of a transformer that has 75 turns on it is 100 V.  What is the voltage across the secondary coil, which has 15 turns on it?
a)
500 V
b)
25 V
c)
125 V
d)
20 V
59.
Refering to the voltage waveform v(t), determine the period
a)
4 s
b)
5 s
c)
7 s
d)
14 s
60.
Determine the Frequency
a)
0.250 Hz
b)
0.200 Hz
c)
0.143 Hz
d)
0.0714 Hz
61.

Determine the peak voltage

a)

15 V

b)

30 V

c)

-15 V

d)

-30 V

62.

what types of signal is this?

a)

Direct Current

b)

Alternating Current

63.

What type of signal is this?

a)

Direct current

b)

Alternating current

64.

What type of energy conversion happen in boiler?

a)

Chemical to Heat energy

b)

Heat to Kinetic energy

c)

Kinetic to Mechanical energy

d)

Mechanical to electrical Energy.

65.

What type of energy conversion happen in turbine?

a)

Chemical to Heat energy

b)

Heat to Kinetic energy

c)

Kinetic to Mechanical energy

d)

Mechanical to electrical Energy.

66.

what kind of energy is stored in fossil fuel?

a)

Heat

b)

Kinetic

c)

Chemical

d)

Electrical

67.

What is the pick voltage of US Grid electricity?

a)

50

b)

80

c)

120

d)

220

68.

What is the frequency of US grid electricity?

a)

50

b)

60

c)

70

d)

80

69.

How many times is US grid electricity is turning Off and ON in one second?

a)

40

b)

50

c)

60

d)

70

70.

Why we need to have transformer in transmission line?

a)

To connect the cable

b)

It seems necessary

c)

To reduce the transmission loss.

d)

to make it less costly.

71.

Magnetic field lines always travel what direction?

a)

North to South

b)

South to North.

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