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Types of energy

Definition of different types of energy + examples

QuestionAnswer
Kinetic energy Energy an object has due to motion.
Potential energy Stored energy that results from the position or shape of an object. ex. ball on top of hill.
Chemical energy potential energy stored in the chemical bonds that hold chemical compounds together.ex. food, matches, cells, etc.
Mechanical energy kinetic energy + potential energy. potential and kinetic energy work in opposite ways
Thermal energy The total kinetic and potential energy an object has. Ex. the sun, a fire, melting ice cube. As kinetic energy increases, thermal energy increases.
Electrical energy The energy of electrical charges.(has some electrical, some magnetic properties, hence the name. travels in waves.) Ex. ipad, battery, lightning, etc.
Electromagnetic energy Energy of lights and of radiation ex. fake tans, light, microwave
Nuclear energy Energy stored in the nuclei of atoms. Ex. the sun, stars, nuclear fission
Energy The ability to do work or cause change
Input force The force you exert on a machine
Output force The force machine exerts on an object
Input work Input force*input distance
Output Work output force*output distance
Changing force If a machine allows you to use less input force to do the same amount of work, you must apply the input force over a greater distance. ex. using a ramp to push a box up steps.
Changing distance Some machines have a lower input than output. In order to apply a greater force over a shorter distance you need to apply a greater input force.
Changing direction Some machines don't change force or distance. Ex. Weight machine.
Created by: Lou399