Karteikarten
P1 AQA (9-1) GCSE Revision
Karten in diesem Stapel (30)
- 1What is potential energy?Stored Energy
- 2What types of potential energy are there?Gravitational
Elastic - 3What is the gravitational field strength of earth? (1 d.p)9.8N/Kg
- 4What is energy measured in?Joules
- 5What happens to fuel consumption in a vehicle as its Ek goes up?The fuel consumption increases
- 6Why is energy lost and what is it lost to?Heat
Air Resistance
Sound - 7What increases work done?Force exerted
Distance traveled (increase in displacement) - 8What is power?The rate of doing work (transferring energy)
- 9What is Watts?Measurement of power (J/s)
- 10What is specific heat capacity?The energy needed to heat 1kg of a certain material by 1 degree centigrade
J / Kg / Degree Centigrade - 11Why is water used to cool things down?It has a very high SHC meaning it can absorb a lot more thermal energy per degree of increase than other objects
Other objects can transfer lots of degrees centigrade for only 1 degree centigrade increase
Water = 4200J / Kg / degree - 12How do you test an objects SHC?Freeze it down to 0 degrees centigrade
Transfer it into a liquid that you know the SHC of
Measure temperature decrease / increase
Divide joules gained by degrees increased - 13What is the problem with this method?It assumes no energy is lost to the surrounding area
- 14What is it called when objects have cooled/heated and have reach the same temperature?Thermal Equilibrium
- 15What are the two methods of reducing heat loss in objects?Lubrication and Thermal Insulation
- 16How does insulation reduce thermal energy loss?It blocks or reduces thermal energy conduction
- 17What is the correct term for energy being lost?Dissapation
- 18How can energy dissipate in a car?Thermal energy lost via engines and wheel
Sound energy lost by noise of engine
Friction by the wheels (loss of kinetic) - 19What is the law of conservation of energy?Energy cannot be created of destroyed, only transfered
- 20What are the three ways of losing thermal energy?Conduction
Convection
Radiation - 21What are the possible methods of energy collection?Fossil fuels, Biofuel, Wind, Wave, Hydroelectric, Solar and Geothermal
- 22What are the two concerns when identifying possible energy sources?Concentration (the amount needed to produce enough energy)
Reliability (how easy it is to harness the energy) - 23What are renewable resources?Resources that will not run out in the foreseeable future
- 24What are non-renewable resources?Resources that will run out because we are using them faster than they are being produced
- 25What is the trend of global energy usage?It increases
- 26What considerations do you have to take into account with resource gathering?Ethical
Social
Economic - 27What is energy transfer?The movement of energy from one store to another
e.g
Muscles (Chemical) to Moving (Kinetic) - 28What was Richard Feynman's idea?Looking at energy transfer is like children's building blocks, when one is missing, you look for it
- 29What number of S.F should you give your answer in for a question?The same number as the question gave you the figures in
- 30What is the mean, median and the mode?Mean = All added together divided by total number of numbers
Median = Middle
Mode = Most common
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- GCSE Physics GCSE Karteikarten am P1 AQA (9-1) GCSE Revision, erstellt von Oliver Faragher am 25/05/2018.
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- Oliver Faragher
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