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Copyright © by Holt, Rinehart and Winston. All rights reserved.
Chapter 18
Finish Monday, Test Tues/Wed
Copyright © by Holt, Rinehart and Winston. All rights reserved.
Passive Solar Heating
Section 1 Renewable Energy TodayChapter 18
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Active Solar Heating
Section 1 Renewable Energy TodayChapter 18
Copyright © by Holt, Rinehart and Winston. All rights reserved.
Copyright © by Holt, Rinehart and Winston. All rights reserved.
Stirling Solar System
25 Kilowatt generator
$250,000
world’s most efficient
uses hydrogen to run a small turbine
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Photovoltaic Cells
Section 1 Renewable Energy Today
Sunlight falls on a semiconductor, causing it to release electrons. The electrons flow through a circuit that is complete when another semiconductor in the solar cell absorbs electrons and passes them on to the first semiconductor.
Chapter 18
Copyright © by Holt, Rinehart and Winston. All rights reserved.
Copyright © by Holt, Rinehart and Winston. All rights reserved.
Copyright © by Holt, Rinehart and Winston. All rights reserved.
Section 1 Renewable Energy Today
Wind FarmsThe cost of wind power has been steadily
falling as wind turbines have become more efficient.
Chapter 18
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Biomass—Power from Living Things
Section 1 Renewable Energy TodayChapter 18
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Copyright © by Holt, Rinehart and Winston. All rights reserved.
Bio-fuelsMethane (manure, land fills, etc)BiodieselAlcohol from corn grainAlcohol from sugar caneAlcohol from cellulose (corn stover or
switchgrass)“Cellulosic ethanol”
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Hydroelectricity—Power from Moving Water
Section 1 Renewable Energy TodayChapter 18
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Hydropower AdvancesIn-stream low pressure micro-hydropower.
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Copyright © by Holt, Rinehart and Winston. All rights reserved.
Geothermal Energy—Power from the Earth
Section 1 Renewable Energy TodayChapter 18
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Copyright © by Holt, Rinehart and Winston. All rights reserved.
Geothermal Heat Pumps: Energy for Homes
Section 1 Renewable Energy TodayChapter 18
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Copyright © by Holt, Rinehart and Winston. All rights reserved.
Tidal Power
Section 2 Alternative Energy and ConservationChapter 18
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Ocean Thermal Energy Conservation
Section 2 Alternative Energy and ConservationChapter 18
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Fuel Cells
Section 2 Alternative Energy and ConservationChapter 18
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Fuel Cells can run on natural gasOr any other hydrogen rich fuel, including
gasoline.Bloom Box delivers electricity (60 Minutes)A power plant converts chemical energy to
thermal energy to mechanical energy to electrical energy. Then loses energy to scrubbers and transmission.
A fuel cell leaves out the middle two steps, no pollution and can be set up in your back yard.
Copyright © by Holt, Rinehart and Winston. All rights reserved.
Section 2 Alternative Energy and Conservation
Energy EfficiencyMost of our devices are
fairly inefficient. More than 40 percent of all commercial energy used in the United States is wasted.
Increasing efficiency may involve sacrifices or investments in new technology.
Chapter 18
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Section 2 Alternative Energy and Conservation
Cogenerationproduction of two useful forms of energy
from the same fuel source.
For example, the waste heat from an industrial furnace can power a steam turbine that produces electricity.
Small cogeneration systems have been used for years to supply heat and electricity to multiple buildings at specific sites.
Chapter 18
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Hybrid Cars
Section 2 Alternative Energy and ConservationChapter 18
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Conservation Around the Home
Section 2 Alternative Energy and ConservationChapter 18
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Name______________hr___
1. Concept Review 202. Concept Map 203. Video – Modern Marvels R.E. 154. Notes 155. Video – Nova, Saved by the Sun 106. Energy Problems 20
TOTAL 100
Chapter 18 Notebook
Copyright © by Holt, Rinehart and Winston. All rights reserved.
Name______________hr___
1. Concept Review 202. Concept Map 203. Video – Modern Marvels R.E. 154. Notes 155. Video – Nova, Saved by the Sun 106. Energy Problems 20
TOTAL 100
Chapter 18 Notebook
Copyright © by Holt, Rinehart and Winston. All rights reserved.
Name______________hr___
1. Concept Review 202. Concept Map 203. Video – Modern Marvels R.E. 154. Notes 155. Video – Nova, Saved by the Sun 106. Energy Problems 20
TOTAL 100
Chapter 18 Notebook
Copyright © by Holt, Rinehart and Winston. All rights reserved.
Name______________hr___
1. Concept Review 202. Concept Map 203. Video – Modern Marvels R.E. 154. Notes 155. Video – Nova, Saved by the Sun 106. Energy Problems 20
TOTAL 100
Chapter 18 Notebook
Copyright © by Holt, Rinehart and Winston. All rights reserved.
Spring Science NightsMarch 31st – Westwood ViewApril 14th – Fiske (KCK)April 18th – Highlands
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