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Physics > Energy > Flashcards

Energy Flashcards

1
Q

What is wind energy

A

Huge wind turbines use wind energy to produce electricity

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2
Q

What is wave energy

A

The wind causes waves which have lots of energy they make floats move up and down to turn a generator

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3
Q

What is hydro electric energy

A

Water is stored behind a dam and when it is released it turns a turbine to generate electricity

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4
Q

What is geothermal energy

A

Cold water is piped down a deep hole and gets heated up by the ground

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5
Q

Where can energy be stored

A

Food fuel and strain

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6
Q

What is gravitational energy

A

The energy stored in objects at height

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7
Q

What is potential energy

A

Energy which is stored

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8
Q

What is strain energy

A

Energy stored in a springy material

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9
Q

Are fossil fuels renewable

A

No

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10
Q

What is a disadvantage to renewable energy

A

Doesn’t create as much energy
Ugly
Isn’t always reliable

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11
Q

What is fuel

A

Fuel can’t be burnt to release heat and light

Fuel stores energy

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12
Q

What type of energy does a car have

A

Chemical in petrol
Kinetic making the car move
Heat energy warming the engine

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13
Q

What type of energy does a torch have

A

Chemical in the battery

Heat and light from the bulb

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14
Q

What is kinetic energy

A

The energy of a moving object

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15
Q

How many years of oil do we have left

A

40

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16
Q

How many years of coal do we have left

A

300

17
Q

What is nuclear power

A

Use of exothermic nuclear process to generate heat and electricity

18
Q

What is a wind turbine

A

Converts kinetic energy from the wind into mechanical energy for electricity

19
Q

What gives the most energy when 1 gram is burned

A

Natural gas

20
Q

What is the cheapest fuel

A

Coal

21
Q

Which fuel burns most cleanly

A

Natural gas

22
Q

Which fuel is easiest to light

A

Natural gas

23
Q

What is biomass

A

Derived from living or recently living organisms

24
Q

What is chemical energy

A

Energy stored in chemicals

25
Q

What is tidal energy

A

Sea water is trapped behind a barrier and then released to turn a turbine

Physics (20 decks)

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