# Shared Flashcard Set

## Details

PH Concepts in Action CH 15
Energy
20
Physics
02/11/2010

Term
 energy
Definition
 the ability to do work
Term
 kinetic energy
Definition
 the energy of motion/movement, depends upon an object's mass and speed
Term
 Potential energy
Definition
 energy stored due to position or shape
Term
 gravitational potential energy
Definition
 a type of potential energy that depends upon an object's height
Term
 elastic potential energy
Definition
 potential energy of an object that is stretched or compressed
Term
 mechanical energy
Definition
 sum of an object's potential and kinetic energy; having to do with motion of everyday objects
Term
 thermal energy
Definition
 total potential energy and kinetic energy of all the microscopic particles of an object
Term
 chemical energy
Definition
 form of potential energy stored in bonds between atoms. Energy is released when bonds are broken.
Term
 electrical energy
Definition
 Energy associated with electrical charges (positive or negative)
Term
 electromagnetic energy
Definition
 Form of energy that travels through space as waves
Term
 nuclear energy
Definition
 Energy stored in the nuclei of atoms. Typically released through nuclear fission. (Nuclei is split.)
Term
 energy conversion
Definition
 the transfer of energy from one form to another
Term
 How are work and energy related?
Definition
 Work is a transfer of energy. Energy is the ability to do work.
Term
 What factors does the kinetic energy of an object depend upon?
Definition
 The objects speed and mass.
Term
 How is potential energy determined?
Definition
 By multiplying the object's mass x 9.8m/s(s) x the height of the object's position
Term
 What are the major forms of energy?
Definition
 mechanical, thermal, chemical, electrical, electromagnetic, and nuclear
Term
 Can energy be created or destroyed?
Definition
 No, only transfered from one form to another.
Term
 What is the law of conservation of energy?
Definition
 Energy cannot be created or destroyed, only converted from one form to another.
Term
 What energy conversion occurs as an object falls towards Earth?
Definition
 Gravitational potential energy of the object is converted to kinetic energy of motion
Term
 How are energy and mass related?
Definition
 Einstein's equation E=mc(2) demonstrates mass and energy are equivalent and can be converted back and forth between each other.
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