Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

physics ♡ ⃗ > energyyy > Flashcards

energyyy Flashcards

You may prefer our related Brainscape-certified flashcards:
Physics 101 flashcards AP® Physics flashcards
1
Q

what does burning fossil fuels generate and cause?

A

they cause global warming and release greenhouse gases into the atmosphere.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what is the element for sulphur dioxide?

A

SO2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what is biomass energy?

A

Biomass energy is generated from decaying plant or animal waste. It can also be an organic material which is burned to provide energy, eg heat, or electricity.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what are the advantages of biomass energy?

A
  • There is no increase in overall CO2 levels.

- renewable. A cheap and readily available source of energy etc

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what are the disadvantages of biomass energy?

A

When burned, they give off atmospheric pollutants

- Greenhouse gases such as water vapour, carbon dioxide, methane, and nitrous oxide are released.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what are the advantages of wind energy?

A
  • renewable resource

- there are no fuel costs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what are the disadvantages of wind energy?

A
  • The amount of electricity generated depends on the strength of the wind.
  • noisy, Manufacture and implementation of wind farms can be costly.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what are the advantages of hydro energy?

A
  • Tidal barrages and hydroelectric power stations are very reliable and can be easily switched on.
  • water energy in its various forms is renewable, no fuel costs
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what are the disadvantages of water energy?

A
  • Hydroelectricity dams flood farmland and push people from their homes.
  • Tidal barrages destroy the habitat of estuary species, including wading birds.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are the advantages of solar energy?

A
  • Solar energy is a renewable energy resource and there are no fuel costs.
  • No harmful polluting gases are produced.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what are the disadvantages of solar energy?

A
  • Although warm water can be produced even on cloudy days, solar panels do not work at night.
  • expensive; inefficient, do not work at night
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What are fossil fuels?

A

Formed by the remains of living organisms, they release heat energy when burned yet have chemical energy stored within them.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the fossil fuel that is stored as chemical energy?

A

Coal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What stores the heat energy?

A

Water and steam which transfers as movement energy (kinetic)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What energy does the turbine release as?

A

Movement energy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What does the energy from the generator create?

A

Electricity

17
Q

What are the advantages of fossil fuels?

A

Relatively cheap and easy to obtain, most of our infrastructure is designed to run using fossil fuels

18
Q

What are the disadvantages of fossil fuels?

A

Non renewable and has a limited supply. Coal and oil release sulfur dioxide gas which can cause acid rain

19
Q

What is carbon capture?

A

Carbon capture and storage is a way to prevent carbon dioxide building up in the atmosphere which is stored underground.

20
Q

What is nuclear energy converted into in a nuclear power station?

A

Heat energy

21
Q

What are the advantages of nuclear power

A

They do not produce harmful pollutants into the atmosphere such as carbon dioxide and sulfur dioxide.

22
Q

What are the disadvantages of nuclear power?

A

Non renewable. if there is an accident, large amounts of radioactive material could be released into the environment.
Nuclear waste remains radioactive and is hazardous to health for thousands of years, so it must be stored safely.

23
Q

What can energy not do?

A

It cannot be created or destroyed. This is called conservation of energy.

24
Q

What is the national grid?

A

Electricity is distributed from power stations to consumers through the National Grid, which allows distant power stations to be used. It also allows a mix of different energy resources to be used efficiently to supply the country’s electricity, whatever the local demand. Reliable supply of electricity

25
Q

Give examples of consumers of electricity

A

Shops, factories, homes

26
Q

Explain why transformers are used in the National Grid.

A

A step-up transformer increases the voltage in order to decrease the current before it travels through the transmission lines. A lower current ensures that less energy is wasted as heat in the transmission lines, and makes the process more efficient.

27
Q

What is the role of the steam in a power station?

A

It turns the turbines

28
Q

What does the generator convert the movement of kinetic energy into?

A

Electricity

29
Q

What is a step down transformer?

A

It reduces the voltage to a safe level

30
Q

Which type of energy has a high decomposition cost?

A

Nuclear.

31
Q

Which power stations run all the time?

A

Nuclear and coal power station stations run all the time because they take the longest to start up

physics ♡ ⃗ (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions