ENERGY

Energy Ability to cause change

Two categories of energy Kinetic energy- Potential energy- Energy an object has due to its motion Energy stored in an object because of its position

Energy Resources and Conservation Energy resources –  Energy conservation – anything that can be used as a source of energy to do work methods of energy use through insulation, increasing energy frequency, and changes in patterns of use

Alternative Forms of Energy Nuclear-energy stored in atomic nuclei that can be transformed into other forms of energy by complex power plants

Geothermal Energy Geothermal-Heat flowing from inside the Earth

Solar Energy Solar-Energy from the sun

Hydropower/Hydroelectricity Hydroelectricity-Electricity produced by the kinetic power of water

Wind Energy Wind-Electricity produced by the kinetic energy of wind

Biomass Biomass powerPlant material, vegetation, or agricultural wastes (compost) used as a fuel or energy source

Using Fossil Fuels as Sources of Energy Fossil fuels- Formed when heat and pressure gradually turns the remains of organisms and plants into oil, natural gas, and coal takes millions of years to form

Types of Energy Resources Nonrenewable Resource Examples An energy resource that is used up much faster than it can be replaced Fossil fuels

Types of Energy Resources Renewable Resource Example Energy source that is replenished continually Hydropower/hydro- electricity

Types of Energy Resources Inexhaustible Resource Example- Energy source that can’t be used up by humans sun

Generating Electrical Energy Generator- -device that transforms kinetic energy into electrical energy-in fossil fuel power plants, coal, oil, or natural gas is burned to boil water

Turbine Turbine- set of steam- powered fan blades that spins a generator at a power plant to produce electrical energy