Physics Chapter 15: Energy
Terms in this set (30)
The abilty to do work
The energy of motion
Energy that is stored as a result of position or shape
Gravitational Potential Energy
Potential energy that depends upon an object's height
Elastic Potential Energy
The potential energy of an object that is stretched or compressed.
The energy associated with the motion and the position of everday objects, the sum of Kinetic Energy and Potential Energy
The total potential and kinetic energy of all the microscopic particles in an object.
The energy stored in chemical bonds
The energy associated with electric charges
A form of energy that travels through space in the form of waves
The energy stored in atomic nuclei
The process of changing energy from one form to another
Nonrenewable energy sources
Exist in limited quantities,and once used, cannot be replaced except over billions of years.
Formed underground from the remains of once living organisms
Renewable Energy resources
Resources that can be replaced in a relativly short amount of time
Energy obtained from flowing water
Sunlight that is converted into usable energy
Thermal energy beneath the earth's surface
The chemical energy stored in living things
Hydrogen Fuel cell
Generates electricity by reacting hydrogen with oxygen
Finding ways to use less energy or more efficiently
What is Work?
A transfer of energy
What does the kinetic energy of any moving object depend on?
Mass and speed
What does an object's gravitational potential energy depend on?
Mass, acceleration due to gravity, and height
What are the major forms of energy?
Mechanical, Thermal, chemical, electrical, electromagnetic, and nuclear energy
What does the law of conservation of energy state?
Energy cannot be created or destroyed.
Can energy be converted?
Yes, energy can be converted from one form to another
What is a common energy conversion?
Gravitational potential energy and kinetic energy convert when an object falls
What does E=mc2 state?
energy and mass are equivalent and can be converted into each other.
How can energy resources be conserved?
By reducing energy needs and by increasing the effieciency of energy use.
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