Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

geography > Energy Security > Flashcards

Energy Security Flashcards

1
Q

what is renewable energy

A

energy which comes from natural resources

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what is solar energy

A

energy derived from the sun through solar radiation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what is wind energy

A

conversion of wind energy into a useful form of energy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what is hydro energy

A

the power derived from the force or energy of moving water.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what is geothermal energy

A

energy obtained by tapping the heat of the earth itself.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what is biomass

A

is a renewable energy source, biological material from living.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

3 advantages and 5 disadvantages of hydroelectric energy

A
  • No greenhouse gas emissions.
  • Control flooding downstream.
  • Provide water storage for irrigation and domestic use
  • Large areas of land are flooded behind the dam.
  • Visual pollution.
  • Can prevent fish movement upstream.
  • People and settlements may have to be relocated.
  • Expensive to build and maintain.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

4 advantages and 3 disadvantages of tidal energy

A
  • No greenhouse gas emissions.
  • No air pollution.
  • Has the potential to produce large amounts of energy.
  • Reliable.
  • Expensive to build and maintain.
  • Can affect marine ecosystems.
  • Few suitable sites.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

3 advantages and 4 disadvantages of wind energy

A
  • No greenhouse gas emissions.
  • No air pollution.
  • Cheap to run.
  • Not reliable only works when the wind is strong enough but not too strong.
  • Visual pollution.
  • Noise pollution
  • Many turbines are needed to produce the same energy as an average coal-fired power station.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

4 advantages and 3 disadvantages of solar energy

A
  • No greenhouse gas emissions
  • No air pollution
  • Can be small or large-scale
  • Can be used in most locations
  • Expensive to install
  • Not reliable; only works when it is sunny
  • Large numbers needed to produce energy
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

3 advantages and 3 disadvantages of geothermal energy

A
  • No CO gases.
  • Reliable.
  • Can produce large amounts of energy.
  • Expensive.
  • Emits sulfuric gases.
  • High temperatures cause maintenance issues.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

2 advantages and 3 disadvantages of biomass energy

A
  • Uses waste or biofuels which regrow.
  • Available in most locations.
  • Air pollution.
  • Produces greenhouse gases. - Expensive.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

2 advantages and 3 disadvantages of coal

A
  • It lasts 300yrs
  • now become more efficient, needed to make coke
  • The cost of production is high
  • produces a lot of GH gases
  • is dangerous
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

4 advantages and 4 disadvantages of oil

A
  • More efficient than coal
  • more accessible to transport
  • diversity of uses
  • petro-chemicals
  • It lasts only 50-70yrs
  • oil spills release greenhouse gases
  • prices fluctuate
  • acid rain
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

3 advantages and 3 disadvantages of gas

A
  • cleanest of fossil fuels
  • cheaper than oil
  • easy to distribute
  • It releases methane
  • explosives
  • acid rain and greenhouse gases.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

3 advantages and 3 disadvantages of nuclear power

A
  • Plenty of radioactive supply as fuel
  • Very low amounts of greenhouse gases made
  • Nuclear waste stored safely underground
  • Risk of nuclear accidents
  • Remains radioactive for a long time & expensive
  • Uranium mining is dangerous and polluting
17
Q

case study: China general facts

A
  • chinas main energy sources were coal, oil and HEP
18
Q

how does China use coal

A
  • coal is 2/3 of energy supply
  • essential raw material in steel making industries
  • coal is milled to a fine powder so it will burn faster
  • powdered coal is blown in combustion chamber of a boiler where it burns at a high temperature
  • hot gases and heat energy converts water lining the boiler into steam
    -high pressure steam is passed through a turbine
  • after passing through turbine, the steam in condensed and reheated in the boiler
  • electricity is generated from a strong magnetic field caused by rotating blades
19
Q

problems of burning coal in china

A
  • china consumes nearly as much coal annually as all other countries combined
  • biggest source of air pollution and greenhouse gas emissions
  • coal is responsible for around 40% of the deadly fine particulate matter in chinas atmosphere
  • provinces in northern china have the highest concentrations of PM 2.5 in the country
20
Q

china uses of oil

A
  • about 20% of china’s energy supply
  • most oil is used for transport
  • oil industry employs millions ofpeople and makes a major contribution to the economy
  • more than 50% of oil consumed in china is imported
  • world oil prices fluctuate due to uncertain factors

geography (12 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions