energy Flashcards
what is a system
an object or group of objects
what is energy measured in
joules
whats an open system
allows the exchange of energy and matter to or from its surroundings
whats a closed system
can exchange energy but not matter to or from its surroundings
whats an isolated system
does not allow the transfer of matter or energy to or from ots surroundings
what does the principle of conservation state
energy can not be destroyed or made but can be transfered from one store to another
what does this mean for a close system
the energy in a close system is constant
what is kinetic energy
moving objects have energy in their kinetic store
what is gravitational energy
objects gain gravitational energy when they are lifted from the ground
what is elastic energy
objects have energy in their elastic potential when they are stretched
what is electrostatic energy
when two objects with a charge interact with one another
what is magnetic energy
objects that have energy in their magnetic store
what is chemical energy
objects with energy in their chemical can release energy in chemical reactions
what is nuclear energy
atomic nuclei release energy from their nuclear store during nuclear reactions
what is thermal energy
objects that store energy in their thermal store that release heat
