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Physics⚡️ > Chapter 3 🏵 > Flashcards

Chapter 3 🏵 Flashcards

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1
Q

Problems with hydroelectricity

A

The reservoir could run dry

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2
Q

Which types of energy are unreliable?

A

Renewable resources as they depend on conditions

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3
Q

Problems with wind and wave electricity

A

Wind and waves could be calm

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4
Q

Problems with tidal energy

A

Height of tide varies

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5
Q

Problems with solar energy

A

No solar energy at night

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6
Q

What is used to provide a constant amount of electricity

A

Nuclear and coal fired power stations

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7
Q

What is used to meet extra electricity demand in winter?

A

Gas fired power stations

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8
Q

When are renewable resources used?

A

When demand is high and when the conditions are suitable

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9
Q

What is produced when fossil fuels are burnt?

A

Greenhouse gases like carbon dioxide

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10
Q

What causes acid rain?

A

Sulfur dioxide

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11
Q

Advantages to nuclear power

A

No greenhouse gases produced

More energy produced

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12
Q

Disadvantages of nuclear power

A

Radioactive waste has to be stored for years

Explosions

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13
Q

Advantages of renewable energy sources

A

Never run out
No greenhouse gases
No radioactive products

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14
Q

Disadvantages to renewable energy

A 
still not able to meet the world demand
Wind turbines make noise pollution 
Tidal and hydroelectricity affect wildlife 
Solar panels need to cover a large area
Can be unreliable
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15
Q

Disadvantages to solar energy

A

Convert less than 10% of energy absorbed to electricity
Only produce small amounts of energy
Very expensive
Lots of them needed

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16
Q

How do solar heating panels work?

A

Use the sun’s energy to heat up water in panels

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17
Q

How does geothermal energy work?

A

The energy transferred from radioactive substances heats rocks and heats the earths surface
Water is pumped into the earth and gets turned into steam which powers a turbine

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18
Q

How does wind power work?

A

Force of wind turns blades, which powers a generator

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19
Q

How does wave power work?

A

A floating generator bobs up and down on the water. This motion turns the generator so it makes electricity

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20
Q

How does hydroelectric power work?

A

Water collected in a reservoir or in storage flows downhill and drives turbines that power generators at the bottom of the hill

21
Q

How does tidal power work?

A

Traps water from high tide behind a barrage. This water flows through turbines to reach the sea , generating power

22
Q

What is a biofuel?

A

A fuel taken from a living or dead organism

23
Q

Advantages to biofuel?

A 
Renewable 
Carbon neutral (organism takes in as much carbon as burning expels)
24
Q

How to get nuclear fuel?

A

Takes energy from atoms when they split (fusion)

25
Q

What is a biofuel?

A

A fuel taken from a living or dead organism

26
Q

Advantages to biofuel?

A 
Renewable 
Carbon neutral (organism takes in as much carbon as burning expels)
27
Q

How to get nuclear fuel?

A

Takes energy from atoms (fission and fusion)

28
Q

What are the three non renewable types of energy

A

Coal
Oil
Natural gas

29
Q

Alternatives to fuel powered cars

A

Bio fuels

30
Q

Which power station has the longest start up time

A

Nuclear

31
Q

What is released when fossil fuels are burnt

A

Greenhouse gases

32
Q

What does sulcus dioxide do

A

Acid rain

33
Q

What energy sources provides most electricity at the minute

A

Gas

34
Q

What is the difference between solar heating panels and solar cell panels

A

Solar cell panels use sunlight to make electricity whereas the other uses it to heat water

35
Q

Source of geothermal energy

A

Radioactive substances

36
Q

Main disadvantage of geothermal energy

A

Few suitable areas and is expensive

37
Q

Advantages of wind power 3

A

No pollution
No fuel cost and minimal running cost
No permanent damage to landscape

38
Q

Advantage of geothermal power

A

Very little damage to environment

39
Q

Advantage of solar cells 2

A

No pollution

Can be used in remote areas

40
Q

Disadvantage to solar cells

A

Can’t get more power when needed

41
Q

Advantage to nuclear power

A

Lots of energy created

42
Q

What is the fuel in a nuclear power station

A

Uranium or plutonium

43
Q

Advantage of tidal power 2

A

No pollution

Quite reliable

44
Q

Disadvantage of tidal power 2

A

Spoils view

Destroys habitats

45
Q

Advantage of wave power

A

No pollution

46
Q

Disadvantage of wave power 2

A

Disturbing habitats

Unreliable

47
Q

Advantage of hydro electric

A

Immediate response

48
Q

Disadvantage of hydro electric

A

Big impact on environment

49
Q

What is a renewable source of energy?

A

An energy source that is being replenished by natural processes as quickly as it is being used up

Physics⚡️ (16 decks)

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