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Physics > Energy Demands > Flashcards

Energy Demands Flashcards

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1
Q

What are systems that store? Large amounts of energy called?

A

Energy resources

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2
Q

What are the major energy resources to produce electricity?

A

Fossil fuels nuclear fuel biofuel wind hydroelectricity neural tidal water waves sun

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3
Q

What is fossil fuel?

A

Natural fuel formed by remains of living organisms

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4
Q

What is nuclear fuel ?

A

Radioactive materials

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5
Q

What is hydroelectricity?

A

Electricity generated by water movement

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6
Q

What is geothermal?

A

Energy from heat of the Earth

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7
Q

What are renewable energy sources?

A

Energy sources that are replenished

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8
Q

Where is energy needed in homes?

A

Heating, cooking plus running appliances

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9
Q

Where is energy needed in homes?

A

Heating plus running appliances

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10
Q

Where is energy needed in public services?

A

Running machinery and warming rooms

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11
Q

Why is energy needed for factory and farms?

A

To operate heavy duty machinery plus production chains

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12
Q

Give an example of how producing and distributing electricity can damage the environment

A

Pollution for harmful waste products

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13
Q

What human actions can renewable resources be replenished by?

A

Trees that are cut down for biofuel are replaced by planting new trees

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14
Q

Given a natural process that renewable resources are replenished by

A

Water let through a dam for hydroelectricity is replaced by the water cycle

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15
Q

What is a disadvantage of a renewable energy resource?

A

They are expensive

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16
Q

What is a positive of power stations that use fossil fuels?

A

They are reliable

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17
Q

What Energy store is fossil fuels?

A

Chemical

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18
Q

What are fossil fuels used for?

A

Transport heating electricity generation

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19
Q

What power output does fossil fuels have? Why is this bad ?

A

A high power output, it releases Co2

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20
Q

What energy store is nuclear fuels ?

A

Nuclear

21
Q

Is nuclear fuels nonrenewable or renewable?

A

Non renewable

22
Q

What are nuclear fuels used for?

A

Electricity generation

23
Q

What type of output power is nuclear fuels? Why is this bad?

A

Very high output power, but it produces radioactive waste

24
Q

What energy store is biofuel?

A

Chemical

25
Q

Is biofuel renewable or nonrenewable?

A

Renewable

26
Q

What is biofuel used for?

A

Transport heating electricity generation

27
Q

What Power output does biofuel have and why is this a problem?

A

Medium power output but low impact

28
Q

Power does biofuel have and why is this a problem?

A

Medium power output but low impact

29
Q

What energy store is wind energy ?

A

Kinetic energy

30
Q

What is wind energy used for?

A

Electricity generation

31
Q

What power output is wind and why is this annoying?

A

Very low power output and takes up large areas

32
Q

What energy store is hydroelectricity

A

Gravitational potential energy

33
Q

Is hydroelectricity renewable nonrenewable?

A

Renewable

34
Q

What is hydroelectricity used for?

A

Electricity generation

35
Q

What is the power output for hydro electricity? How does it cause environmental impact?

A

Medium power output and local habitats affected by large areas that are needed to be flooded to build dams

36
Q

What is the geothermal energy store?

A

Internal

37
Q

What is geothermal energy used for?

A

Electricity generation and heating

38
Q

What is the power output for geothermal energy and how much environmental impact does it cause

A

Medium power output and very low environment impact

39
Q

What energy store is tide energy in?

A

Kinetic

40
Q

What is Tide energy used for?

A

Electricity generation

41
Q

What is the power output for tides and how does it cause environmental impact?

A

The power output is potentially very high, but it’s hard to harness and tidal barrages can block sewage which needs to go out to sea

42
Q

What energy store does the Sun go into?

A

Nuclear

43
Q

What is sun energy used for?

A

Electricity generation and heating

44
Q

What is the power output dependent on for the Sun energy and what environmental impact does it cause?

A

The weather and very little impact

45
Q

What energy store does water wave energy fit into?

A

Kinetic

46
Q

What is waterway energy energy used for?

A

Electricity generation

47
Q

What is the power output for water wave energy and what is the environmental impact cause?

A

Low output power and very low environmental impact caused

48
Q

What is the power output for water wave energy and what is the environmental impact cause?

A

Low output power and very low environmental impact caused

Physics (11 decks)

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