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Physics Year 9 GCSE > EOY Topic 1 > Flashcards

EOY Topic 1 Flashcards

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1
Q

Energy

A

The ability to do work

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2
Q

What is energy measure in?

A

Joules

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3
Q

8 energy stores

A

Chemical, kinetic, GPE, elastic, thermal, nuclear, electrical, magnetic

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4
Q

4 energy transfers

A

Mechanical, radiation, heating, electricaly

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5
Q

Law of conservation of energy

A

Energy can’t be created or destroyed, only transferred between stores

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6
Q

GPE equation

A
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7
Q

KE equation

A
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8
Q

Useful energy

A

Energy transferred to the store you want it to go to

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9
Q

Wasted energy

A

Dissipated to the surroundings

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10
Q

Efficiency equation

A
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11
Q

Efficiency

A

How much as a percentage of the energy or power transferred goes to the useful energy

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12
Q

Power equation

A
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13
Q

Power

A

Rate of transfer of energy

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14
Q

Energy stores for kettle boiling

A

Electrical decreases, thermal increases, wasted energy in sound and heat

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15
Q

Renewables
Non renewables

A

Infinite, never run out
Finite, will run out one day

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16
Q

Advantages and disadvantages of solar energy

A

Advantages - efficient, renewable, no running cost, no greenhouse gases.

Disadvantages - weather dependant, high installation cost, low energy output

17
Q

Advantages and disadvantages of fossil fuels

A

Advantages - reliable, lot of energy per kg of fuel, quick start time, cheap

Disadvantages - non-renewable, emits greenhouse gases (CO2)

18
Q

Advantages and disadvantages of nuclear power

A

Advantages- huge energy output, reliable, green

Disadvantages - expensive to set up, long start up time, radioactive waste needs to be dealt with

Physics Year 9 GCSE (10 decks)

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