energy resources!. nonrenewable resources a resource that forms at a rate that is much slower than...
TRANSCRIPT
Energy Resources!
Nonrenewable Resources• A resource that forms at a rate that is much
slower than the rate at which it is used• Fossil Fuels– Formed from the remains of organisms that lived long
ago• Plants and animals that lived millions of years ago were
buried– Plants stored energy from photosynthesis– Animals stored energy the energy by eating the plants
– ALL OF THIS ENERGY COMES FROM THE SUN!– This energy is released when fossil fuels are burned
Nonrenewable Resources• Types of Fossil Fuels– Coal: burned to produce steam that run electric
generators– Petroleum: Used in gasoline, wax, and
petrochemicals– Natural Gas: Heats homes, stoves, ovens, and
vehicles
Nonrenewable Resources• Nuclear Energy– An atom is split and releases energy to convert to
thermal energy– The atoms are unlimited but the type we are able
to split (uranium) is limited
Renewable Resources• A natural resource that can be replaced at the
same rate at which it is used• Solar Energy: Sunlight can be changed into
electrical energy through solar cells– Calculators
Renewable Resources• Water Energy (Hydropower)– The potential energy can be changed into kinetic
energy as water flows through a dam• Falling water turns a turbine which are connected to a
generator making electrical energy
Renewable Resources• Wind Energy– Kinetic energy caused by the differing
temperatures of the air– Kinetic energy of wind can turn the blades of a
windmill– The kinetic energy of the turning blades is turned
into electrical energy with a generator
Renewable Resources
• Geothermal Energy– Thermal energy caused by the heating of the Earth’s
crust– Water and Air are pumped underground– The water is heated and pumped back to the
surface– This warmed water is then used to heat homes
• This is what heats and cools our school!
– Steam created deep underground can also be used to turn turbines to create electricity
Renewable Resources
• Biomass– Plants, wood and waste are burned to release
energy– Plants, like corn are chemically broken down into
sugars– These sugars can be converted into other
chemicals for fuel (like ethenol)