Energy sources Ms Kathy. Non renewable : Forms of energy that can not be replaced easily once used.
Renewable and Non-Renewable Resources 6.9. What is a renewable resource? – A form of energy that...
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Transcript of Renewable and Non-Renewable Resources 6.9. What is a renewable resource? – A form of energy that...
Renewable and Non-Renewable Resources
6.9
• What is a renewable resource?– A form of energy that can be replaced almost as
quickly as it is used. – Mostly comes from the Sun or from Earth itself.
Wind Energy• Wind driving an electric generator • Wind will blow as long as the sun is heating the Earth.• Captured by wind turbines. The blades turn an electric
generator. • Disadvantages:– Expensive to construct– Requires land where there are strong winds– Produce a small amount of pollution
Hydroelectric Energy• Moving water has kinetic energy• Water cycle is powered by the sun• Spins turbines connected to electric generators in
a dam.• Disadvantages:– Only in areas where there is a large reliable amount
of water.– Expensive to build– Block movement of fish and other wildlife
Solar Energy• Energy from the sun in the form of radiation• Converted into energy by the use of solar cells• Can be transferred to water or to heat a house• Causes little to no pollution• Works best in areas with lots of sunlight!
DUHHHH• Not available all the time!!
Biomass• Organic matter from plants and animal waste
that contains chemical energy.• Produces energy when burned• Can be used to cook foods, provide warmth or
power an engine• Examples: trees, crops, animal waste, and peat• Inexpensive, but produces a little pollution.• Can be used to produce gasoline
Geothermal Energy• Produced from heat released from the Earth’s
interior.• Hot springs, geysers• Energy is in the form of heat and can generate
electricity.
Non-renewable Resource • A resource that is used up faster than it can be
replaced. • Most energy used in the U.S. is non-renewable.
Fossil Fuel vs Nuclear FuelFossil Fuel Nuclear Energy
-Formed from the remains of organisms that lived a long time ago.-Release energy when burned, can be converted into electricity to power engines-Most commonly used resource. -Relatively inexpensive to process.
- Energy released when the nuclei of atoms are split or combined.
- Fusion or fission- Most common nuclear fuel is
Uranium.- Uranium is obtained through
mining.
Fossil Fuels Nuclear Fuel
Petroleum• Type of fossil fuel, also called crude oil.• Taken from the ground by drilling• Can be refined into gasoline/kerosene• Can also be made into plastic, ink and gum
Natural Gas• Type of fossil fuel, used for heating and cooking• Some cars use for fuel• Butane and Propane• Used for heating homes, camp stoves or grills• Inexpensive
Coal• Solid used to generate electricity• Used for heat and transportation• More than half the US’s electricity comes from
coal-burning power plants
How to fossil fuels form???
• Take out a blank piece of paper• Go to page 440 • Draw and write a small paragraph explaining
how fossil fuels are formed. • Turn in by the end of class!