Energy

14A Classifying Energy

• Energy

  • Energy: the ability to do work

  • Kinetic Energy: energy that an object possesses due to its motion

  • Potential Energy: stored energy that can be used later

14B Energy Changes

• Mechanical Energy: the sum of the kinetic energy and all the forms of potential in a system

14C Energy Resources

• Renewable Energy Resource: an energy resource that is easily replaced by natural methods

• Nonrenewable Energy: an energy resource that is not replaced naturally

• Fossil Fuel: a fuel that has formed from the remains of plants and animals that lived in the past, including coal, petroleum oil, and natural gas

• Nuclear Energy: energy produced by nuclear reactions

• Renewable Energy Resources:

  • Biomass Energy: chemical potential energy obtained from renewable organic materials

  • Hydroelectric Energy:electric energy generated by the movement of water

  • Geothermal Energy: energy derived from the heat in the interior of the earth

  • Solar Energy: energy produced by the sun

  • Tidal energy: mechanical energy in rising and falling tides

  • Wind Energy: energy from the wind can be used to turn turbine blades that are attached to generators