Physics P3 Flashcards
What are three problems associated eith burning fossil fuels ?
- Carbon emissions
- Health risks
- Global warming
What are the waste products of burning fossil fuels ?
Carbon monoxide and carbon dioxide .
What are the waste products of using nuclear fuel ?
Uranium mill tailings and reactor fuel
What are two advantages of using renewable energy resources ?
. They don’t produce any carbon emissions
. Jobs and economic benefits
What are two advantages of using renewable energy resources ?
. They cost a lot to maintain
. Could effect wildlife
What dows sulfur dioxide cause to the enviorment?
Can cause deforestation .
What does carbon dioxide do to the enviroment ?
Causes the atmosphere to become warmer .
What are two ways carbon dioxide emissions can be reduced from fossil fuel power stations
Carbon capture and storage .
What are the disadvantages of using solar power ?
Requires sunny weather to workand its not always sunny .
What are the disadvantages of using wind turbines ?
They can effect birds that fly in the sky .
What are the disadvantages of tidal barrages ?
Could effect sealife .
What are the disadvantages of using hydroelectric power ?
Expensive .
Is this statement true or false .
Nuclear power causes radiation to be leaked in to the enviroment ?
True
What is the order of power stations start up times ?
Coal , oil , nuclear and nuclear gas .
What is one advantage of a nuclear power station ?
Doesn’t produce carbon emissions .
What are five examples of 6 renewable energy sources ?
Wind , solar , hydroelctric , tidal , wave and gas .
What are four examples of non - renewable energy sources ?
Geothermal , coal , biofuels and oil .
What are two ways we use electricity ?
Lighting and heating
What does carbon neutral mean ?
It means having a balance between emitting carbon and absorbing carbon from the atmosphere .
What fuels are considered carbon neutral ?
Biofuels , a fuel made from plants .
What are the four stages involved in generating electrcity in a fossil fuel power station ?
- Coal arrives at the power station and is placed on the furnace to burn .
- Coal is burnt which then heats up and it converted into steam which then powers the turbines .
- A transformer converts the heat energy into electrical energy.
- Electricity then is spread out to our homes .
What are 4 examples of renewable energy thay uses wind and water ?
Wind turbines , wave power , hydroelectric and tidal .
What is one advantage of using renewable energy sources ?
Producing less pollution
What is one disadvantage using renewable energy sources ?
High maintenance
Describe how wind turbines work .
Wind turbines use the kinetic energy of the wond to generate enough power to turn its turbine . Turbines will turn and turn generating electrical energy in a generator behind a turbine which then sends the energy to a transformer which then sends it to our homes .
Describe how a hydroelectric system works .
A hydroelectric system uses water from high up in valleys behind a dam . At this point we call this potential energy . When water is then released from the dam it causes a big rush from potential to kinetic energy . Down at the bottom of this dam are turbines whish are turned by the current flow of water , this will then cause a generator to change the energy from kinetic to electrical energy .
What is one renewable energy source sutable to be placed on a roof of a house ?
Solar panels
What is one renewable energy source suitable to be placed on a river vallley ?
Hydroelectric
What is a solar cell ?
A solar cell is a device like a solar panel that directly converts light into electricity .
How does a solar panel work ?
The sun is captured by a solar panel that is made up of silicon , a conductor of electricity . After the sun hits layers of silicon inside the solar panel an electric charge builds up creating a flow of electricity .
What is a solar tower ?
A solar tower is a tower that is set right in the middle of a large amount of mirrors that reflect sunlight onto the top of the tower . This converts its heat energy from the sun to electrical energy .
How does a geothermal power station work ?
The gap between the tectonic plates is called the fault line and this gap sometimes lets magma squeeze through . The magma then heats up big pools of water which creates steam , the steam is then drawn to the power plant. The kinetic energy from the steam turns the turbines and a generator converts the k energy to electrical energy .
