- Created by: 16hardyalk
- Created on: 26-11-18 18:27
the rate of enrgy supplied to a appliance or device per second. The more powerful an appliance the faster the rate at which the energy is transferred
Power = Energy/Time
Power = Work done/ Time
the measure of warmth or coldness of an object or substance
the amount of energy transferred when a force moves ( in the direction of the force).
Work done = force x distance
Law of Conservation of Energy
energy cannot be created or destroyed only transferred between stores.
a measure of how well an object uses the enrgy that it is supplied to it, or how good it is at changing energy into useful energy.
E = useful energy output/total energy supplied
when energy spreads out into the surroundings
this energy resource is not renewable meaning that once we have used all of its energy there is no more and is gone forever
this energy will always be bale to be used there will always be more of the energy and will never run out
Gravitational Potential Energy
GPE = mass x gravity x height
Specific Heat Capacity
SHC - a property of a material that tells us how much energy is needed to raise the tempreture of 1kg of that material by 1'C
SHC = energy/mass x 0
KE = 1/2 x mass x v2 (squared)
process where heat or electrcity is passes through a material or substamce using the vibrations of particles
mainly occurs in solids
to stop it use a material that is an insulator
the process of when hot air particles rise and once they have risen the particles cool down and turn into cold air particles and start to sink as they get denser.
mainly occurs in fluids (liquids + gases)
no way of stopping it but use an insulator to slow procces down
the emmission or transmission of energy in the form of particles (or waves) through space or material medium.
occurs in anything that gives out infrared heat
to slow process down use an insulator
an object or group of objects
Most Kids Hate Learning G C S E Energy Names
the energy associated within an object
process in which energy is moved from one store to another
Kinetic theory of particles
all mater consists of many very small particles which are constantly moving or in a continual state of motion
Elastic Potential Energy
EPE = 1/2 x spring constant x extension2 (squared)