Topic 4 - Conservation of Energy Flashcards
what are the 8 main energy stores (MENGTECK)
M - Magnetic
E - Elastic Potential
N - Nuclear
G - Gravitational Potential
T - Thermal
E - Electrostatic
C - Chemical
K - Kinetic
what is an example of an object with kinetic energy?
anything moving
what is an example of an object with thermal energy?
anything - the hotter the object the more energy in the thermal store
what is an example of an object with chemical energy?
anything that can release energy by chemical reaction
what is an example of an object with gravitational potential energy?
anything in a gravitational force
what is an example of an object with elastic potential energy?
anything stretched
what is an example of an object with electrostatic energy?
two charges that attract/repel
what is an example of an object with magnetic energy?
two magnets that attract/repel
what is an example of an object with nuclear energy?
atomic nuclei going through nuclear reactions
what are the 4 main energy transfers (HERM)
H - Heating
E - Electrically
R - Radiation
M - Mechanically
what is an example of energy transfer by heating?
energy transfer from a hotter object to a colder object
what is an example of energy transfer electrically?
a charge moving through a potential difference
what is an example of energy transfer by radiation?
energy transferred by light/sound waves
what is an example of energy transfer mechanically?
an object moving due to force acting on it
what is the principle of conservation of energy?
Energy can be transferred usefully, stored or dissipated, but it cannot be created or destroyed.
