paper one

Created by

araya

Cards (182)

What are the 8 types of energy stores? [8] - Thermal (Internal) - Kinetic - Gravitational Potential - Elastic Potential - Chemical - Magnetic - Electrostatic - Nuclear
What is a system? A system is an object or a group of objects.
What is internal energy? The total kinetic and potential energy of all the particles that make up a system.
When work is done on a system what increases? The energy stored in a system.
What does heating do to the energy stored in a system? By increasing the energy of the particles within it.
What happens as the energy increases? [2] It will either: - Increase the temperature - Pproduce a change of state
What does the increase depend on, if the temperature increases? [3] - Mass of the substance heated - What the substance is - Energy input
What is the specific heat capacity? The specific heat capacity of a substance is the amount of energy required to raise the temperature of one kilogram of the substance by one degree celsius.
What is the equation for specific heat capacity?
What is the conservation of energy? Energy can be transferred usefully, stored, or dissipated but can never be created or destroyed.
What 4 ways can energy be transferred? [4] - Mechanically - Electrically - Heating - Radiation
What is power? Power is the rate of energy transfer, or the rate of doing work.
What is power measured in? Power is measured in watts.
What is the equation for rate of energy transfer?
What is the equation for work done (power)?
What is conduction? Conduction is the process where vibrating particles transfer energy to neighbouring particles.
What is convection? Convection is where energetic particles move away from hotter to cooler regions.
What happens to the total energy in a closed system? In a closed system the total energy never changes, but it can be transferred from one store to another.
What is wasted energy caused by? Wasted energy is caused by unwanted energy transfers.
How can you reduce unwanted energy transers? [3] - Lubrication - Thermal Insulation - Tightening loose parts
What is the equation for efficiency for any energy transfer?
What is non-renewable energy? Non-renewable energy resources, are energy resources that will eventually run out.
What are examples of non-renewable energy resources? [3] - Natural Gas - Oil - Coal
What is renewable energy? Renewable energy resources, are energy resources that can be replenished.
What are examples of renewable energy resources? [7] - Solar - Wind - Hydroelectricity - Geothermal - Tidal - Water Waves - Biofuel
What are the advantages and disadvantages of wind turbines? [4] - No pollution - Does not provide a constant source of energy - Noisy - Ruin the landscape
What are the advantages and disadvantages of solar cells? [3] - No enviromental damage - Expensive - Depends on light intensity
What are the advantages and disadvantages of Biofuel? [4] - Made from from plants and waste - Carbon neutral - Expensive - Removes food crops
What are the advantages and disadvantages of hydroelectricity? [2] - Useful way to generate electricity on a small scale - Initial costs are high
What are the advantages and disadvantages of Geothermal? [3] - Very reliable - Little damage to the enviroment - Only available in a limited number of places where hot rocks can be found
What are the advantages and disadvantages of Tidal? [4] - No pollution - High initial set-up cost - Can alter habitats - Cause problems for shippings
What are the advantages and disadvantages of water waves? [3] - No pollution - Initial costs are high - Very unreliable
What are the advantages and disadvantages of nucleur fuel? [3] - Reliable output - Produces radioactive waste - Costly to build and decommission
What are the advantages and disadvantages of of coal? [2] - Reliable output - Burning produces greenhouse gases (CO2) and contributes to acid rain (SO2)
What are the advantages and disadvantages of Oil? [4] - Reliable output - Provides a compact source of energy for transport - Burning produces CO2, NO2, and SO2 - Serious enviromental damage if spilt
What are the advantages and disadvantages of Gas? [2] - Reliable output - Burning produces CO2, but not SO2
What is electric current? Electric current is the flow of electrical charge
What is current measured in? Amps
What is electric charge measured in? Coulombs
How can you calculate charge flow? Charge flow = Current * Time Q=It