Aqa Physics Paper 1 100% Solution Guarantee Pass

AQA Physics Paper 1 100% SOLUTION GUARANTEE PASS sound energy - ANSWER Energy caused by an object's vibrations thermal energy - ANSWER The total energy of motion in the particles of a substance chemical energy - ANSWER A form of potential energy that is stored in chemical bonds between atoms. nuclear energy - ANSWER the potential energy stored in the nucleus of an atom electrical energy - ANSWER Energy caused by the movement of electrons. light energy - ANSWER Energy in the form of moving waves of light kinetic energy - ANSWER energy of motion gravitional potential energy - ANSWER potential energy that depends on the height of an object elastic potential energy - ANSWER the energy of stretched or compressed objects conservation of energy - ANSWER law that says energy cannot be created or destroyed, but can change forms uses of friction - ANSWER - rubbing hands for warmth - break pads on bikes Efficiency = - ANSWER Useful Energy Output / Total Energy Input Increase efficiency - ANSWER - add lubricant - reduce friction internal energy - ANSWER the sum of the kinetic and potential energies of all particles in the system Conduction - ANSWER The direct transfer of heat from one substance to another substance that it is touching. Convection - ANSWER The transfer of thermal energy by the circulation or movement of a liquid or gas convection current - ANSWER a current caused by the rising of heated fluid and sinking of cooled fluid Insulator - ANSWER A material that does not allow heat or electrons to move through it easily. Infra red radiation - ANSWER Electromagnetic waves of heat energy. Radiation - ANSWER Energy that is radiated or transmitted in the form of rays or waves or particles. greenhouse effect - ANSWER CO2 and other greenhouse gases in the atmosphere absorb long wavelength radiation radiated from the Earth's surface and prevent it escaping. black - ANSWER good absorber of radiation white - ANSWER poor absorber of radiation specific heat capacity - ANSWER the energy required to raise the temperature of one gram of a substance by one degree Celsius Reduce heat loss from homes - ANSWER - loft insulation (fibre glass is a good insulator) - cavity wall insulation (foam prevents convection currents) - aluminum foil behind radiator (reflects radiation) - double glazing (vacuum slows conduction and radiation) energy transfer - ANSWER power x time non-renewable energy - ANSWER A natural resource such as coal, gas, or oil that, once consumed, cannot be replaced. renewable energy - ANSWER A resource that has a theoretically unlimited supply and is not depleted when used by humans. solar, wind, geothermal, hydropower, tidal, wave, nuclear, biofuel dis: unreliable (except hydroelectric and geothermal) nuclear power - ANSWER energy from splitting Uranium atoms. dis: nuclear waste, expensive carbon neutral - ANSWER an activity that does not change atmospheric carbon dioxide concentrations bulb - ANSWER resistor - ANSWER variable resistor - ANSWER light emitting diode - ANSWER switch - ANSWER volt meter - ANSWER measures potential difference ammeter - ANSWER measuring the current resistance - ANSWER A material's oppo