# 6th gr chptr 5 Energy, Conversion, Fossit fuels sections 1,2,3

Potential Energy Energy that is stored and held in readiness. Potential energy has the potential to do work. (ex) turn a spring to wind up a toy
Energy The ability to do work or cause change (ex) wind has energy
Elastic potential energy Potential energy associated with objects that can be stretched or compressed (Energy to a bow by pulling it back)
Gravitational potential energy Any potential energy that depends on the height of an object
(the force you use to lift and object)
Kinetic energy The energy of motion – Energy that an object has due to its motion – depends on both mass and velocity -. (bowling ball knocking over pins) It can be kinetic or potential energy
Mechanical Energy Is the energy associated with the motion or position of an object or moving parts (riding in a school bus)
Thermal Energy Is the total energy of the particals in an object (ice cream melting)
Chemical Energy Is potential energy stored in chemical bonds that holds compounds (like chocolate or wax) together
Electrical Energy Moving electric that produces electric charges or electrical energy – (like a shock from a metal doorknob)
Electromagnetic Energy Energy of light (microwave) and other forms of raditation (CT scans) which travels in waves.. The waves have some electrical properties and magnetic properties
Nuclear Energy A potential energy that is stored at the core or nucleus of an atom (Nuclear power plants)
Two types of potential energy Elastic potential energy and Gravitational potential energy
Name the 6 different forms of energy Mechanical, Thermal, Chemical, Electrical, Electromagnetic, Nuclear
Energy Conversion Is a change from one form of energy to another. Any form of energy can be converted into any other form.
Kinetic and Potential energy The most common conversion of energy is potential energy changing into Kinetic energy
The Law of Conservation States that when one form of energy is converted to another, no energy is destroyed or lost in the process. Since energy can not be created or destroyed the total amount of energy is the same before and after any process.
Friction Is the force the one surface puts on another when the two rub each other – converts mechanical energy to thermal energy
Conserving energy Is saving energy and not wasting it.
Fossil fuels Coal, petroleum and natural gas were formed from the remains of ancient plants and animals – fossil fuels are materials that store chemical potential energy
Combustion The process of burning fuels
During combustion of fossil fuel What energy is converted The chemicial potential energy is converted to thermal energy
The energy that fossil fuels contain came from The sun

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