topic 1

Cards (17)

what is power measured in
watts
what is power 
the rate of energy transfer
what is specific heat capacity
the amount of energy needed to heat 1kg of something by 1 degree
how do falling objects have energy
gravitational potential energy is gained when an object is lifted higher
what is work done 
total amount of energy transferred
what is a closed system
a system where energy cant leave the system
what is a system
objects that are moving or changing forces
name the 8 energy stores
-electrostatic
chemical
gravitational potential
elastic potential
nuclear
thermal
kinetic
magnetic
how can you increase the efficiency of a house
insulated windows (double glazing)
insulate the walls
draft excluders
how do you reduce unwanted energy transfers
insulate
the particles move in liquids when heated because....
they have become less dense
what is convection
the movement of particles from hotter to colder regions
where does conduction happen
usually in solids
ways energy is transferred
electrically
heating
mechanically
radiation
where does waste energy go
into the surroundings
what is conducting
the transfer of energy from one particle to another
what does one watt equal
one joule per second