3.6 changes in energy Flashcards
what is changes in energy?
when energy is converted from one store to another
define process
one or more events that result in energy changes
define event
something which happens
what type of energy does natural gas store?
chemical energy
what happens when gas is burned?
chemical energy changes into thermal energy
what happens in large generators that spin around?
thermal energy changes into kinetic energy
what does kinetic energy change into?
electrical energy
what is electrical energy?
energy that is transferred through wires into buildings
name a dangerous energy change
typhoon, hurricane, earthquake, tsunami
what is an energy transfer diagram?
a diagram that shows how energy changes from one energy into other energies
what happens when a book falls from the shelf? explain using an energy transfer diagram if possible
gravitational potential energy is stored in the book, then it changes into kinetic energy when it falls from the shelf
what is kinetic energy?
energy stored due to movement of an object
what is electrical energy?
the flow of current in a circuit transfers electrical energy
what is gravitational potential energy?
energy stored when an object is lifted away from a source of gravity
what is sound energy?
energy transferred from vibrating objects
