P4: Energy Resources Flashcards

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1
Q

What is meant by an energy resource?

A

A resource than can be used to generate electricity.

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2
Q

Name the 3 main fossil fuels.

A

Coal

Oil

Natural Gas

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3
Q

What is a fossil fuel?

A

A fuel that has been formed by fossilised remains of plants or animals.

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4
Q

What is coal formed from?

A

The fossilised remains of TREES that have been compressed and heated in the ground over millions of years.

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5
Q

What are oil and gas formed from?

A

The fossilised remains of ANIMALS that have been compressed and heated in the ground over millions of years.

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6
Q

Briefly describe how a coal fired power station generates electricity

A
  • Burning coal heats water
  • The steam produced turns a turbine
  • The turbine is attached to a generator which generates electricity
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7
Q

What are the problems associated with burning fossil fuels?

A

They produce a lot of carbon dioxide.

Carbon dioxide is a greenhouse gas.

Greenhouse gases cause global warming.

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8
Q

What is meant by a renewable energy resource?

A

An energy resource that will not run out.

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9
Q

List examples of renewable energy sources:

A
  • Wind turbines
  • Solar energy
  • Tidal energy
  • Hydroelectric
  • Geothermal
  • Biomass
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10
Q

List the advantages and disadvantages of renewable energy resources.

A

Advantages

  • Won’t run out
  • Less atmospheric pollution
  • Minimal running costs

Disadvantages

  • Provide less energy
  • Unreliable e.g. not always windy
  • Damage environment e.g. wind turbines
  • High start up costs
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