energy stores and systems Flashcards
when energy is transferred to an object, where is energy stored?
one of that objects energy stores?
what are the 8 energy stores?
thermal, kinetic, gravitational potential, elastic, chemical, nuclear,electrostatic,magnetic
what is thermal energy?
heat energy
what is kinetic energy?
movement or motion
what is gravitational potential energy?
position in a gravitational field
what is elastic energy?
energy held in an already stretched spring
what is chemical energy?
held in chemical bonds
what is nuclear energy?
breaking atoms
what is electrostatic energy?
repelling charges have been moved closer together or when attracting charges have been pulled further apart.
what is a system?
a single object or group of objects
what is a closed system?
a system where neither matter nor energy can leave
what is the net change in total energy of a closed energy system?
always zero
what is the equation for work done?
work done = force x distance
what must distance be in the line of?
action of force
what happens when a ball is transferred from a height?
energy transferred from balls gravitational potential energy to kinetic energy store
what are the 4 types of transferring energy?
mechanical, electrical, heating and radiation
what is transferring energy mechanically?
force moving on an object through an object
what is transferring energy electrically?
changes moving due to a potential difference?
what is transferring energy by heating?
due to temperature difference
what is transferring energy by radiation?
energy transferred by a wave
