May Still Be Assessed (generating Electricity/ Static Electricity/ Radiation) Flashcards
(28 cards)
What is a renewable energy resource?
A resource that can be replenished as it is used
What is a finite resource?
One that is going to run out
What is biofuel?
any fuel taken from living or recently living materials, such as animal waste
What is geothermal energy?
energy released by radioactive substances deep within the Earth
What is nuclear fuel?
substance used in nuclear reactors that releases energy due to nuclear fission
What are some positive features of biofuels?
They are renewable and carbon neutral
What are some positives of nuclear energy?
- it does not emit greenhouse gases
- it produces much more energy than fossil fuels
What are some negatives of nuclear energy?
- it produces nuclear waste which needs to be stored for many years.
- An accident in a nuclear power plant can make the surrounding area unusable for many years.
What are some positives of Wind Power?
It is carbon neutral, It is renewable
What are some negatives of Wind Power?
- It is unreliable as wind speed can fluctuate
- They can make lots of noise
What are some positives of Wave Power?
They are carbon neutral, they are renewable
What are some negatives of Wave Power?
- They are an unreliable source of energy, they need lots of cables and buildings along the coast to connect to the electricity grid.
- They can affect habitats
What are positives of solar cells/panels?
- They cost nothing to run
- They are carbon neutral,
What are some negatives of solar cells/panels?
- They cost a lot to buy
- they are unreliable, only 10% of the energy they receive is converted into electricity
What are some negatives of fossil fuels
- They release greenhouse gases
- They are not renewable.
What are some positives of fossil fuels
- readily available
- cheap source of electricity
What are Examples of Renewable resources?
- Sun
- Wind
- Water (Tidal, HEP)
- Geothermal
What are Examples of finite resources?
- fossil fuels nuclear
Describe the production of static electricity by rubbing surfaces
- When insulating materials rub against each other, they may become electrically charged.
- Electrons, which are negatively charged, may be ‘rubbed off’ one material and on to the other.
- The material that gains electrons becomes negatively charged.
- The material that loses electrons is left with a positive charge.
What is an electric field
An electric field is a region where charges experience a force.
What are the 3 times of radiation?
- Alpha radiation (α)
- Beta radiation (β)
- Gamma Radiation (γ)
Summaries Alpha radiation (α)
- Known as Helium nuclei (4,2)
- Very Large
- Highly ionising
- Not highly penetrating
- Stopped by paper or skin
Summaries Beta radiation (β)
- Known as an electron (0, -1)
- Medium Size
- Medium ionisation
- Medium penetration
- Stopped by Aluminium foil
Summaries Gamma Radiation (γ)
- Part of the electromagnetic spectrum (it is a wave)
- Very Small
- not highly ionising
- Highly penetrating
- Stopped by thick lead
