Warm-upWeek 9Day 3 Note: you MUST write in COMPLETE sentences. 1.An “Ore” is a mineral that can be Ex-_ at from the Earth to make a P____.

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Warm-upWeek 9Day 3 Note: you MUST write in COMPLETE sentences. 1.An “Ore” is a mineral that can be Ex-_______ at from the Earth to make a P__________. 2.What type of rock process makes heavy minerals? (Sedimentary, metamorphic, igneous?) 3.What makes Coal Electricity better and worse than solar electricity? tracted rofit

“Alternate Energy Sources” Chapter 4, Section 2

Solar Energy 1 Second… The Earth gets enough energy from sun to power all nations for 10,000 days. Solar energy = Sun’s Rays  heat & electricity

Solar Energy… Good: 1.“Fuel” is free 2. No Pollution! Bad: 1.Equipment & installation = Expensive! 2.Backup supply needed when it’s night/cloudy.

What makes this a good place for a “SOLAR FARM?”

Nuclear Energy 7 % U.S. Energy. Nuclear Fuel = radioactive materials –Large atoms –“Heavy Metals” Nuclear Fission: 1.Splitting large atoms 2.Releases Energy 3.Heat Heat  spins steam turbines  Electricity

Nuclear Energy San Onofre Nuclear Plant, California Fuel Pool

Wind Energy Q: What do we use wind for? In the year 2000, wind supplied a little less than one percent of California’s electricity Goal: Wind power = 10 % US Electricity. Good = Free “Fuel” Bad : 1.“Noise pollution” (NOISY!) 2.Needs LOTS of land! = EXPENSIVE!

Where? Why!?

Hydroelectric Power Q: How have humans USED moving water? Hydroelectric Power: –Power from falling water 5 % U.S. Electricity DAMS! –Stored Energy  Moving Water  Spins Turbines  Electricity! Death of a Dam. –Fill with sediment.

Hydroelectric Power Glen Canyon Dam and Lake Powell, Arizona and Utah Border

Geothermal Energy “Geo” = Earth“Thermal” = Heat Energy from Earth’s Internal heat –Inside heat. 1.Near Volcanoes. 2.Clean. 3.Runs out. 4.“Cools off”

Tidal Power 1.“Tides” = in/out movement of ocean. 2.Dam where ocean meets land. 3.Movement of tide makes turbines spin.

HW: Assignment Read Ch. 4, Sect. 2 (pg ) Do Section 4.2 Assessment #1-6 (pg. 107)

Test Corrections For Each Problem Earn back 1 point Do: 1.Label Number. 2.Write out answer in complete sentence. 3.Find page in book where it is explained. 4.Write sentence from book.

STUDENT LEAD Research Phase (25 min) 2.Discussion Phase (10min) 3.Extra Credit