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Physics > Topic 4: Energy Resources and Energy Transfer > Flashcards

Topic 4: Energy Resources and Energy Transfer Flashcards

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1
Q

What is the principle of conservation of energy?

A

energy can be stored and transferred but it can NEVER be created or destroyed

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2
Q

total energy input =

A

useful energy output + wasted energy

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3
Q

What is conduction?

A

process where vibrating particles transfer energy from their kinetic store to the kinetic store of neighbouring particles

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4
Q

How can you reduce convection?

A

-stop fluid from moving (e.g. trapping pockets of air, insulation)

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5
Q

Black surfaces are good…

A

absorbers/ emitters of radiation

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6
Q

Shiny surfaces are poor…

A

absorbers/ emitters of thermal radiation

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7
Q

What is power?

A

the rate at which energy is transferred

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8
Q

What are the advantages of Nuclear power?

A

-doesn’t produce greenhouse gases
-uranium is in high supply

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9
Q

What are the advantages of Wind farms?

A

-cheap to run
-renewable (won’t run out)
-doesn’t release any polluting gases

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10
Q

What are the advantages of Geothermal power?

A

-renewable
-no environmental problems

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11
Q

What are the advantages of Fossil fuels?

A

-releases lots of energy (quite cheaply)
-reliable
-power stations already exist (easy/ cheap)

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12
Q

What are the advantages of Solar cells?

A

-renewable
-no pollution

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13
Q

What are the advantages of Wave power?

A

-no pollution
-renewable
-minimal running costs

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14
Q

What are the advantages of Tidal barrages?

A

-renewable
-no pollution

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15
Q

What are the advantages of Hydroelectric power?

A

-reliable
-low running costs
-renewable

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16
Q

What are the disadvantages of fossil fuels?

A

-release CO2
-releases sulphur dioxide
-non-renewable

17
Q

What are the disadvantages of Nuclear reactors?

A

-expensive to build
-risks of radioactive leaks
-radioactive waste

18
Q

What are the disadvantages of Wind farms?

A

-ruins the view
-noise pollution
-expensive to set up

19
Q

What are the disadvantages of Geothermal power?

A

-costly
-only possible in a few places

20
Q

What are the disadvantages of Solar cells?

A

-expensive
-small scale
-unreliable/ weather dependent

21
Q

What are the disadvantages of Wave power?

A

-ruins view
-unreliable
-small scale

22
Q

What are the disadvantages of Tidal barrages?

A

-destroys habitats
-ruins view
-amount of energy provided is unreliable

23
Q

What are the disadvantages of Hydroelectric power?

A

-loss of habitat
-initially costly
-impacts environment (flooding)

Physics (10 decks)

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