Conservation of energy Flashcards
state the only 2 things that can happen to energy
1) energy can be stored
2) energy can be transferred
Type of energy store: kinetic
things that move have kinetic energy stored
Type of energy store: thermal
the hotter an object is, the more energy it stores
Type of energy store: chemical
things that can release energy by a chemical reaction e.g. food
Type of energy store: Gravitational Potential Energy
Anything in a gravitational field - things that can fall
Type of energy store: Elastic Potential
Things that stretch e.g. a rubber band
Type of energy store: Electrostatic
Two charges that repel or attract each other
Type of energy store: Magnetic
Two magnets that attract or repel from each other
Type of energy store: Nuclear
Released energy from atomic nuclei stored in nuclear reactions
Type of energy transfer: Mechanically
Forces that act on an object, e.g. pushing, stretching, squashing
Type of energy transfer: Electrically
A charge doing work, e.g. charges moving around a circuit
Type of energy transfer: By heating
transferred energy from a hotter object to a colder object. e.g. a pan on a hob.
Type of energy transfer: By radiation
Transferred energy by waves, e.g. light from the sun reaching Earth
energy is transferred…
between different stores
energy is only useful when…
it is transferred from one store to a useful store
