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ENERGY
Energy is the ability to do work.
 Work is the force on an object, pushing it over a
distance.
 Force is a push or pull.
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Two Forms of Energy – Potential and Kinetic
1. Kinetic energy - is the energy of motion

The faster an object moves, the more kinetic
energy it has.
Examples: a bouncing ball, a book falling, a roller
coaster going down the hill
2. Potential energy - energy that is stored in an
object
Examples: holding a ball before you drop it, a book
on the edge of a table, a roller coaster at the top
*As potential energy decreases, kinetic energy
increases.
The Six Types of Energy
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1. _Mechanical Energy_- energy associated with moving objects
Examples: Bicycle, scissors, grandfather clock, etc
2.___heat/thermal energy____ - energy associated with internal
motion of atoms. (It is shaking of molecules.)
Examples: caused by friction, the heat you feel from a space heater,
etc. It is usually released by any other type of energy.
3._chemical energy__ - energy used to bond atoms together – when
bonds are absorbed or released.
Examples: any compound (water, baking soda, rust, etc)
4._electrical energy__ - energy of moving electric charges
Examples: charge/electrons moving through wires, electric cords,
etc.
5. __nuclear energy_ - energy stored in the nucleus of an atom
Examples: nuclear fusion or fission, the sun and other stars, nuclear
bomb, nuclear power plant
6.__radiant energy___ - energy associated with electromagnetic
waves
Examples: radio and TV waves, microwaves, light, UV rays, Infrared
rays, gamma rays, etc. (Note: Ocean, sound, earthquake, sonar, and
ultrasonic waves are not radiant energy. These waves are
mechanical because they involve moving objects and need a medium
through which to travel.)