energy resources

what are energy resources?

Energy resources are large stores of energy that can be used to generate electricity and heat homes and businesses

how is electricity usually generated, and what elements differentiated the type of energy resource used?

• A turbine is turned, which turns a generator, which generates electricity

• The element that differs is how the turbine is made to turn

what kind of energy resources is applicable to when water is used to turn turbines?

Water can be used to turn turbines in the case of hydroelectric dams, tidal barrages and tidal turbines

describe the energy transfer that occurs when water is used to turn turbines to generate electricity

Energy in the kinetic store of the flowing water is transferred to the kinetic store of the turbine and then to the kinetic store of the generator and transferred electrically to the National Grid

describe what happens when fossil fuels are the energy resouce (2)

• Fossil fuels can be combusted to heat water, and the steam produced can be used to turn turbines

• Energy from the chemical store of the fuel is transferred to the thermal store of the water, which is then transferred to the kinetic store of the turbine, and then transferred to the kinetic store of the generator and then transferred electrically to the National Grid

describe what happens when nuclearl fuels are the energy resouce (2)

• Nuclear fuel can also be used to heat water to produce steam to turn turbines

• The energy transfers involved in electricity generation from a nuclear power plant are:
  Nuclear store of fuel → thermal store of water → kinetic store of turbine → kinetic store of generator

describe what happens when geothermal energy is the energy resouce (2)

• Geothermal energy is another way to produce the steam that turns the turbines

• Water is pumped down to the hot rocks and returns through a fissure as steam

describe bio fuels as an energy resouce

plant matter, ethanol or methane can be produced and used as fuel in place of fossil fuels

describe what happens when wind energy is the energy resouce

wind turns turbines directly to generate electricity

describe what happens when hydroelectric energy is the energy resource

water is stored at a height, and when released, rushing water turns turbines directly to generate electricity

describe what happens when tidal energy is the energy resource

the movement of water due to tides turn turbines directly to generate electricity

describe what happens when solar energy is the energy resource

solar cells use light to generate electricity, solar panels use thermal radiation to heat water to produce warm water for the household use

describe what happens when water waves is the energy resource

moving water due to waves turn turbines directly to generate electricity

how many types of energy resource is there

9

what is a renewable energy resource

An energy source that is replenished at a faster rate than the rate at which it is being used

will renewable energy resources run out

no

what are the two types of electricity drawn by the National Grid

non renewable and renewable

how many renewable resources are there?

6

list the types of renewable energy

• Wind

• Bio-fuel

• Hydroelectricity

• Geothermal

• Tidal

what are the two types of non renewable energy

• Fossil Fuels (coal, oil and natural gas)

• Nuclear fuel

what are the three types of fossil fuels?

• coal

• oil

• natural gas

what are the three main uses of energy resources?

• Transport

• Electricity generation

• Heating

what are most of the vehicles of the world powered by?

• The majority of vehicles in the world are powered by petroleum products such as petrol, diesel and kerosene

  • These resources all originate from crude oil, which is a fossil fuel

what are other vehicles powered by?

A growing number of vehicles are now being powered by electricity

what is an advantage and disadvantage of electrically powered vehicles?

• The advantage of this is that while the vehicle is being driven, it produces zero carbon emissions

• The disadvantage is that when the vehicle is being charged, it is connected to the National Grid, which currently uses a combination of renewable and non-renewable energy sources

what is another use of biofuel?

Vehicles can also be powered by biofuel

what is an advantage and disadvantage of biofuel powering cars?

• The advantage of biofuel is that it is a renewableresource

• However, the claim that biofuels are carbon-neutral is largely controversial

how high Is electricity demand and why?

With more than 8 billion people in the world, this means the demand for electricity is extremely high

how much of the world’s energy is produced by non renewable sources?

the majority (84%) of the world's energy is still produced by non-renewable, carbon-emitting sources

what are two effects of using non renewable resources?

• has an enormous negative impact on the environment

• Currently, scientists are working hard to develop more and more efficient ways to produce electricity using more carbon-neutral energy resources

what do most homes in cold countries have?

Most homes in cold countries are fitted with central heating systems

what do central heating systems utilise?

These utilise natural gas in order to heat up water which can be pumped around radiators throughout the home

what is a downside to central heating systems?

gas is a non-renewable energy resource

what is an advantage of geologically active countries?

In geologically active countries, such as Iceland, they are fortunate to be able to heat their homes using geothermalenergy