P3: Energy Resources

Question 1

What are energy demands mostly met by?

Answer 1

Bering oil, coal and gas.

Question 2

What provides some of energy we use

Answer 2

Nuclear power
Biofuels
Renewable sources

Question 3

What is used as fuel in a nuclear power station?

Answer 3

Uranium or plutonium

Question 4

Are biofuels renewable sources of energy?

Answer 4

Yes

Question 5

What examples of bio fuels are used to create electricity?

Answer 5

Methane and ethanol

Question 6

What is a bio fuel?

Answer 6

Any fuel taken from a living or recently living orginism

Question 7

Is a bio fuel carbon neutral?

Answer 7

Yes

Question 8

Examples of electricity generators?

Answer 8

Wind turbine
Waves
Hydro electricity
Tidal power station.

Question 9

How does a Wind turbine produce electricity?

Answer 9

The force of the wind drives the turbines blades around.

This turns a generator

The power generated increases as the wind speed increases

Wind turbines are unreliable because they do not create electricity when there is little wind.

Question 10

How does wave power create electricity?

Answer 10

It uses the waves to make a floating generator move up or down. The motion turns the generator so it generates electricity.

Cable between the generator and the shoreline delivers electricity to the grid system.

They need to withstand storms and don’t produce a constant supply of electricity. It can effect the habitats of marine life and birds

Question 11

How is hydroelectric electricity created?

Answer 11

It is generated when rainwater is collected and flows down hill, the flowing water drives turbines that turn electricity generators of. the bottom of the hill.

Question 12

How is tidal power electricity created?

Answer 12

It traps water from each high tide behind a barrage. The high tide is released into the sea through turbines.

The turbines drive the generators in the barrage.

Question 13

What are solar cells?

Answer 13

Flat solid cells that use the Sun’s energy to generate electricity directly

Question 14

Solar heating panels use the sun’s energy to heat ____ directly

Answer 14

Water

Question 15

Where does Geothermal energy come from?

Answer 15

Energy transferred by radioactive substances deep inside the earth.

The radioactive substances heat the rock

Question 16

____ pumped into hot rocks underground produces steam to drive turbines at the earth’s surface and generate electricity.

Answer 16

Water

Question 17

Where are geothermal power stations built?

Answer 17

In volcanic areas.

Question 18

How does geothermal energy work?

Answer 18

Radioactive substances heats rock,

Water gets pumped down to hot rocks underground to create steam. The steam produced drives electricity turbines at ground level.

Radio active waste can be brought up and hurt plants

Question 19

What is a solar cell panel?

Answer 19

Sunlight is used to create electricity

Question 20

What is a solar heating panel?

Answer 20

Sunlight is used to heat water

Question 21

What do fossil fuels produce?

Answer 21

Increased levels of green house gases, leads to global warming.

Question 22

What do nuclear fuels produce?

Answer 22

Radioactive waste.

Question 23

What are the disadvantages of renewable energy resources?

Answer 23

They cover large areas and can disturb natural habitats.

Question 24

Can different energy resources be evaluated in terms of reliability, environmental effects, pollution and waste?

Answer 24

Yes

Question 25

Does nuclear power transfer much more energy per kg of uranium or plutonium fuel than fossil fuels.

Answer 25

Yes

Question 26

Nuclear power disadvantages:

Answer 26

Used fuel rods contain radioactive waste which has to be stored safely for centuries. An explosion could release radioactive material over an area.

Question 27

What gas causes acid rain?

Answer 27

Sulfer dioxide

Question 28

Does natural gas have to have its sulfer impurities removed before it is used?

Answer 28

Yes

Question 29

Can gas-fired power stations and pumped storage stations meet variations in demand?

Answer 29

Yes

Question 30

Expenses of renewable recourses

Answer 30

Cheap to run | Expensive to install

Question 31

What is the independent variable?

Answer 31

The variable that is changed.

Question 32

What is the dependent variable?

Answer 32

dependent variable is the variable that is being measured or tested in an experiment.

Question 33

What is a control variable

Answer 33

Something that is constantly the same. Eg temperature.

Question 34

What can solar cells be connected together to make?

Answer 34

Solar cell panels.

Question 35

How does a solar panel tower work?

Answer 35

Flat mirrors reflect light onto water. Water turns to steam Steam turns turbine

Question 36

what is a pumped storage scheme

Answer 36

Pumped-storage hydropower (PSH) is a type of hydroelectric energy storage. It is a configuration of two water reservoirs at different elevations that can generate power (discharge) as water moves down through a turbine; this draws power as it pumps water (recharge) to the upper reservoir.

Question 37

What is the difference between a turbine and generator ?

Answer 37

turbine converts available energy forms into rotation while the generator converts rotation into electricity.

Question 38

Different types of Power stations

Answer 38

gas-fired station (shortest start-up time) oil-fired station. coal-fired station. nuclear power station (longest start-up time)

Question 39

What is the national grid?

Answer 39

the network of high-voltage power lines between major power stations.

Question 40

What is the national grid ?

Answer 40

All of electricity generated goes to to get distributed.