warm-upweek 9day 3 note: you must write in complete sentences. 1.an “ore” is a mineral that can...
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Warm-up Week 9 Day 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
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“Alternate Energy Sources”
Chapter 4, Section 2
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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
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Solar Energy…
• Good:
1. “Fuel” is free 2. No Pollution!
• Bad:
1. Equipment & installation = Expensive!2. Backup supply needed when it’s
night/cloudy.
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What makes this a good place for a “SOLAR FARM?”
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Nuclear Energy 7 % U.S. Energy.
• Nuclear Fuel = radioactive materials– Large atoms– “Heavy Metals”
• Nuclear Fission:1. Splitting large atoms2. Releases Energy3. Heat
• Heat spins steam turbines Electricity
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Nuclear Energy
San Onofre Nuclear Plant, California
Fuel Pool
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Wind EnergyQ: 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!
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Where?
Why!?
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Hydroelectric PowerQ: 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.
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Hydroelectric Power
Glen Canyon Dam and Lake Powell, Arizona and Utah Border
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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”
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Tidal Power1. “Tides” = in/out movement of ocean.
2. Dam where ocean meets land.
3. Movement of tide makes turbines spin.
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HW: Assignment
• Read Ch. 4, Sect. 2 (pg. 102-107)
• Do Section 4.2 Assessment #1-6 (pg. 107)
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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.
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STUDENT LEAD 4.3
1. Research Phase (25 min)
2. Discussion Phase (10min)
3. Extra Credit