energy Flashcards
(16 cards)
what is energy
ability to work-make things move
two branches of energy
kinetic (KE) and potential (PE)
kinetic energy
energy of motion (contained in movement of an object)
potential energy
energy that is stored
example of kinetic energy
car rolling forwards, an apple falling from a tree
examples of potential energy
holding a ball above ur head, standing at the top of a hill
mechanical energy
energy of a moving object (rolling a ball)
chemical energy
energy of stored matter (batteries)
gravitational energy
energy of an object has when held above a surface (any object you can drop)
light energy
energy you can see (x-rays)
nuclear energy
energy stored in an atom (fusion)
magnetic energy
energy that causes some metals to attract or repel (magnets)
elastic energy
energy stored in an object that can be stretched or compressed (rubber band)
thermal energy
energy of moving particles inside an object (hot water)
sound energy
energy you can hear (singing or music)
