Energy

Energy Stores and Systems, Conservation of Energy and Energy Transfers, Kinetic and Potential Energy Stores, Energy Transfers by Heating

what does the law of conservation of energy state

energy cannot be created or destroyed, but can only be transformed or transferred from one form to another

kinetic energy

anything moving has kinetic energy store

thermal energy

all objects have energy in this store. the hotter the object, the more energy in the store

chemical energy

anything that can release energy by a chemical reaction has energy in this store, such as batteries, fuels, and food.

gravitational potential

any object raised above ground level has energy in this store

elastic potential

anything stretched has energy in this store, e.g springs and rubber bands

electrostatic

two charges that attract or repel each other have energy in this store

magnetic

two magnets that attract or repel each other have energy in this store

nuclear

the nucleus of an atom releases energy from this store in nuclear reactions

4 ways energy can be transferred

by radiation

by heating

mechanically

electrically

by radiation?

when energy is transferred by sound and light

electrically?

this happens when a moving charge does work

by heating

when energy is transferred from a hotter object to a colder object

mechanically

this happens when a force does work on an object

what is a system

a single object/ group of objects