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Gcse Physics > Topic 1 > Flashcards

Topic 1 Flashcards

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1
Q

What are the 8 different types of stores of Energy?

A 
Thermal energy 
Kinetic energy
Gravitational potential energy
Elastic potential energy
Chemical energy 
Magnetic energy 
Nuclear energy
Electrostatic energy
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2
Q

What is another phrase for Work done?

A

Energy transferred

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3
Q

What is the equation for Kinetic Energy?

A

E= O.5 x M(Kg) x Vsquared(M/s)squared

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4
Q

What is the equation for Gravitational potential energy?

A

Gpe = M(Kg) x G(Gravitational field strength) x H(Height,m)

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5
Q

What is the Equation for Elastic Potential energy?

A

Ee=0.5 x K(Spring constant N/m) x e(squared, extension,m.)

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6
Q

What is Specific Heat Capacity?

A

It is the amount of energy needed to raise the temperature of 1kg of a substance by 1’C

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7
Q

What does the law of conservation of Energy state?

A

Energy cannot be created of destroyed

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8
Q

What is a system?

A

It is an object or group of objects

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9
Q

What does friction cause?

A

It causes energy to be transferred into thermal energy?

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10
Q

What do scientists call energy which can be wasted called?

A

Dissipated

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11
Q

What are the two main ways of Reducing friction?

A

Using lubricants e.g oil

Remove the air particles

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12
Q

Where does conduction take place in?

A

Solids especially metals

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13
Q

Why does heat move through conduction?

A

This is because particles are very closed together so heat vibrations can easily pass through.

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14
Q

What is Insulation?

A

Reduce heat movement by conduction

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15
Q

What states does Convection happen in?

A

Liquids and Gases

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16
Q

How does convection work?

A

You heat the liquid, then particles gain heat, then the particles move further apart, making the warm water less dense, therefore the warm water rises and the cool water takes the place at the bottom.

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17
Q

3 ways you can prevent energy losses through heating in homes?

A

Thermal insulation
Double glazed windows
Cavaity walls, which the air gaps reduce the amount of energy transferred by conduction through the wall

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18
Q

What are the two equations for Efficiency?

A

Useful output energy transfer/Total input energy transfer

Useful power output/ Total power input

19
Q

What is Power?

A

It is the rate of energy doing work or energy transferred

20
Q

What are the two equations for Power?

A

P=E/t

P=W/t

21
Q

What are renewable energy resources?

A

They never run out.

22
Q

Give 4 examples of Renewable energy resources?

A

Hydroelectric
Solar power
Wind power
Tides

23
Q

What are advantages of Renewable resources?

A

Never run out

They don’t contribute to climate change

24
Q

What are disadvantage of Renewable resources?

A

Wind and solar power are not reliable

Useful for countries with lots of rivers

25
Q

What are non-renewable resources?

A

Resources that will run out from fossil fuels

26
Q

Give 3 examples of Non-renewable resources.

A

Coal
Oil
Gas

27
Q

What are advantages of Non renewable resources?

A

Provide most of our energy

28
Q

What are disadvantages of Non renewable resources?

A

They run out

Do damage to the environment

29
Q

What are advantages of wind power?

A

Renewable

Doesn’t produce CO2

30
Q

What are disadvantages of Wind power?

A

Noisy

Unreliable as won’t generate electricity in non windy conditions.

31
Q

What are advantages of Solar power?

A

Renewable

Doesn’t produce CO2

32
Q

What are disadvantages of Solar power?

A

Can be expensive

Unreliable will not produce electricity in cloud

33
Q

What are advantages of Geothermal power?

A

Renewable

Doesn’t produce CO2

34
Q

What is the disadvantage of Geothermal power?

A

Can only be used in certain areas such as Iceland and Japan

35
Q

What are advantages of Hydroelectric power?

A

Renewable
Short start up time
doesn’t produce CO2

36
Q

What are disadvantages of Hydroelectric power?

A

Extremely expensive to build dams

Very destructive to wild life habitats

37
Q

What are Advantages of Wave power?

A

Renewable

Doesn’t produce CO2

38
Q

What are the disadvantages of Wave power?

A

Not reliable

Noisy which could affect wildlife.

39
Q

What is the advantages of Tidal power?

A

Renewable

Tidal barrage could be used as a bridge

40
Q

What are the disadvantages of Tidal power?

A

Expensive

Destructive to wildlife

41
Q

What are Advantages of Biofuels?

A

Renewable

Carbon neutral

42
Q

What are Disadvantages of Biofuels?

A

Destructive to habitats for wild life

Land used to grow biofuels could be used to grow crops.

43
Q

Name one Environmental problem about Fossil fuels.

A

Oil spillages affect mammals and birds that live in and around the sea.

44
Q

Give two reasons why we currently do not use more renewable energy in the Uk.

A

It is expensive

If more power plants are built for bio fuels lots of people will not want to live next to one.

Gcse Physics (9 decks)

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