| A | B |
|---|
| kinetic energy | energy of motion |
| potential energy | the energy an object has because of its condition or position |
| energy | the ability to cause changes in matter |
| energy transfer | Movement of energy from one object to another |
| solar energy | energy that comes from the sun |
| fossil | the remains of past life, often found in sedimentary rock |
| resource | any material that can be used to satisfy a need |
| nonrenewable resource | a resource that cannot be replaced easily |
| renewable resource | a resource that can be replaced easily |
| conservation | protecting a resource |
| heat | transfer of thermal energy between objects with different temperatures |
| conduction | transfer of thermal energy from one object directly into another |
| convection | transfer of thermal energy through the movement of a gas or liquid |
| radiation | transfer of energy by waves that move through matter and space |
| system | a set of parts acting together as a whole object |
| reflection | the bouncing of heat or light off an object |
| light energy | radiation that we can see |
| chemical energy | energy that can be released by a chemical reaction |
| mechanical energy | the combination of all the kinetic and potential energy that something has |
| electric energy | energy that comes from an electric current |
| pollution | a waste product that harms living things and ecosystems |
