Energy & Resources Energy & Resources

Fueling Fueling our our

energy energy needsneeds

Our modern lifestyle requires electricity Our modern lifestyle requires electricity Fuel or other types of energy (light, kinetic, heat) is needed Fuel or other types of energy (light, kinetic, heat) is needed

to generate electricity to generate electricity 85% of the energy used in the U.S. is generated by using 85% of the energy used in the U.S. is generated by using

fossil fuelsfossil fuels

What What we use we use energy energy forforQuickTime™ and a

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How Fossil fuels are formedHow Fossil fuels are formed

1. Plants & animals collect in layers of mud in a 1. Plants & animals collect in layers of mud in a shallow seashallow sea

2. Layer is buried, heated, pressurized 2. Layer is buried, heated, pressurized (millions of years)(millions of years)

3. Rock is bent, oil is trapped with natural gas & oil 3. Rock is bent, oil is trapped with natural gas & oil above & water belowabove & water below

Petroleum (oil) is more Petroleum (oil) is more than a fuelthan a fuel

Petroleum is used to make fertilizers, plastics, and Petroleum is used to make fertilizers, plastics, and even cosmetics even cosmetics

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Problems with fossil fuelsProblems with fossil fuels

Fossils fuels are Fossils fuels are non-renewablenon-renewable Burning creates COBurning creates CO2 ,2 ,a greenhouse gas a greenhouse gas Greenhouse gasses contribute to global Greenhouse gasses contribute to global

warmingwarming

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Non-renewable resourcesNon-renewable resources

Fossil fuels are running outFossil fuels are running out The demand for energy is increasing as China, India, Russia The demand for energy is increasing as China, India, Russia

and other countries grow their economies and other countries grow their economies When it will be gone? That depends.When it will be gone? That depends. Estimates: Petroleum 30-40 yrs, natural gas 50-70 yrs, coal 150 Estimates: Petroleum 30-40 yrs, natural gas 50-70 yrs, coal 150

years years

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Renewable energy Renewable energy

SolarSolar WindWind GeothermalGeothermal NuclearNuclear

Renewable resourcesRenewable resources will not will not run outrun out

Do not produce greenhouse Do not produce greenhouse gassesgasses

They all have pros and cons They all have pros and cons

TidalTidal HydroelectricHydroelectric BiofuelBiofuel

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Solar & Wind

Wind: Using kinetic engergy

•Pro: no greenhouse gasses

•Cons: wind does not blow all the time, turbines can kill birds

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Solar: uses light energy from the sun

•pros: will not run out

•Cons: Does not work at night, solar panels are not in many location (yet)

Hydro-Hydro-electricelectric Moving water Moving water

turns turbines to turns turbines to generate generate electricityelectricity

Most rivers are Most rivers are already dammedalready dammed

Causes problems Causes problems for fish, for fish, downstream downstream habitatshabitats

Reducing energy wasteReducing energy waste If we use less we need If we use less we need

lessless TransportationTransportation: use : use

public transit, more public transit, more efficient carsefficient cars

HeatingHeating: insulation, : insulation, turning down the turning down the thermostatthermostat

OtherOther: recycling, more : recycling, more efficient electronics, efficient electronics, lights, & appliances lights, & appliances

Big pictureBig picture: Fewer : Fewer people = Less demand, people = Less demand, Living simply = using less Living simply = using less energy energy

157 mpg car

Review Review

1)1) Is oil a renewable resource?Is oil a renewable resource?

2)2) What do we use most of the engergy What do we use most of the engergy for?for?

3)3) Name 2 types of renewable energy Name 2 types of renewable energy