p1 Energy Flashcards
What is conduction?
when heat moves from one object to another object through direct touch
What is dissipated energy?
Energy that is transferred to the environment so that it can no longer be usefully transferred
What is efficiency?
How much energy is usefully transferred by an appliance
What is energy transfer?
When energy is moved from one energy store to another
What is the gravitational field strength?
The pull of the force of gravity on each kg of mass.
What is insulation?
A material that reduced energy transfers to or from a system
What is kinetic energy?
The energy stored in an object that is moving
What is a lubricant?
A substance added to surfaces to reduce the amount of friction (oil)
What is a non renewable source?
A resource that is not replaced as it is used
What is power?
The rate at which energy is transferred or the rate at which work is done
What is a renewable resource?
A resource that is replenished as it is used
What is specific heat capacity?
The amount of energy needed to raise the temperature of 1kg of a material by 1 degrees celsius
What is watt?
A unit of power
1 watt= 1 joule transferred per sec
What is work done,
The energy transferred when a force moves
