Fichas
P1 (Section B)
Fichas del conjunto (23)
- 1Non-renewable energy...Will run out one day,
Do damage to the environment,
Provide most of our energy. - 2Renewable energy...They will never run out,
Most do damage to the environment but in less nasty ways,
They don't provide much energy and some are unreliable. - 3Features of a typical power stationBoiler - Turbine - Generator
The fossil fuels are burned to convert its stored chemical energy into thermal energy. The heat is used to heat water, producing steam. The steam turns the turbine - kinetic energy. - 4How are nuclear power stations different?Nuclear fission of uranium and plutonium produces the heat to make the steam and drive the generator.
- 5What is wind power?The blades of the turbines turn the generator when in contact with wind. There's no pollution when in use however the spoil views. They are very noisy and the initial cost is high.
- 6What are solar cells?Solar cells generate electric currents directly from sunlight. There's no pollution, is a reliable source of energy in sunny places, initial costs are high and generate electricity on a small scale.
- 7What is hydroelectric power?Hydroelectric power uses falling water. It requires flooding a valley by building a big dam. Rainwater is caught and allowed through turbines. There is no pollution but bad for the environment due to rotting of vegetation. Initial costs are high.
- 8What is pumped storage?Pumped storage night-time electricity is used to pump water up to a higher reservoir. This can then be released quickly during periods of peak demand to supplement the steady delivery from the big power stations.
- 9What is wave power (turbines)?As waves come to shore, they provide an up and down motion which can be used to drive a generator. There is no pollution, however views are spoiled. They are fairly unreliable and the initial costs are high.
- 10What are tidal barrages?Tidal barrages are big dams built across river estuaries with turbines in them. The source of the energy is the gravity of the sun and the moon. They are very reliable however the initial costs are moderately high.
- 11What is geothermal energy?Hot water and steam rise from the earth where hot rocks are. The steam turns the turbine. It is free however there aren't many suitable locations and the cost of building is high.
- 12What problems to non-renewables present?They release CO2 into the atmosphere.
Burning coal and oil releases sulphur dioxide - acid rain. - 13Advantages of overhead cablesLower set up cost,
Faults are easy to access,
Easy to set up,
Minimal disturbance to land. - 14Disadvantages of overhead cablesLots of maintenance,
Looks ugly,
Affected by weather,
Less reliable. - 15Advantages of underground cablesMinimal maintenance,
It's hidden,
Not affected by weather,
More reliable. - 16Disadvantages of underground cablesHigh set up cost,
Faults are hard to access,
Hard to set up,
Lots of disturbance to land. - 17What is amplitude?The displacement from the rest position to the crest.
- 18What is wavelength?The length of a full cycle of the wave, crest to crest.
- 19What is frequency?The number of completed waves passing a certain point per second.
- 20What are transverse waves?EM waves are an example. The vibrations are perpendicular to the direction of energy transfer.
- 21What are longitudinal waves?Sound waves are an example. The vibrations are parallel to the direction of the energy transfer of the wave.
- 22What is refraction?When waves go through a different medium and change direction.
- 23What is diffraction?Waves bend around obstacles, causing the waves to spread out.
Información
- Descripción
- GCSE Physics Fichas sobre P1 (Section B), creado por Abbie Goffin el 29/11/2016.
- Creado por
- Abbie Goffin
- Visitas
- 0
- Valoración