Created by India Webber
almost 6 years ago


Question  Answer 
name the energy stores   thermal , kinetic , gravitational potential , elastic potential , magnetic , electrostatic , nuclear and chemical 
describe how energy is transferred as a ball falls to the ground   the energy stored in the ball's gravitational potential energy store is transferred as the ball falls to its kinetic energy store 
what is the kinetic energy store equation ?   kinetic energy (J)= 0.5 x mass(Kg) x speed(2)(m/s(2)) 
what happens to the speed on an object if energy is transferred into into kinetic energy store ?   it's speed will increase as it is being given more energy 
what is the gravitational potential energy store equation ?   g.p.e (J) = mass (Kg) x gravitational field strength (N/Kg) x height (m) 
what kind of energy is transferred when you compress a spring ?   elastic potential energy 
what is the definition of the specific heat capacity of a material ?   the specific heat capacity of a material is the amount of energy required to heat 1 kg of a material by 1 degree 
what is the equation relating to energy transferred and specific heat capacity ?   change in thermal energy (J) = mass (Kg) x specific heat capacity (J/Kg degree) x temperature change (degree) 
describe an experiment to find the specific heat capacity of a material   block of a sold material with two holes , one for the thermometer and the other for the heater , after measuring the mass of the block of material , wrap in insulation in order to reduce heat loss therefore increasing the overall accuracy , then insert the heater and the thermometer , measure the initial temperature of the block , set the potential difference (V) of the power supply to 10V , turn on the power supply and start the stopwatch 
state the conservation of energy principle   energy is always conserved , it can be transferred usefully , stored or dissipated , but can never be created or destroyed 
define power and give two equations used to calculate power   power = the rate of transferring energy / doing work power (W) = work done (J) x time (s) 
what are the units of power  watts = W 
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