NASC 130 Essentials3_ch12

Sun nuclear the pull of gravity nuclear fission

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Unformatted text preview: clear fission reactions Nuclear Energy in the interior Energy of the Earth Energy stored in Energy chemical bonds chemical Essentials of Geology, 3rd edition, by Stephen Marshak Chapter 12: Riches in Rock: Energy & Mineral Resources Sources of Energy Energy directly from Sun’s nuclear fusion reactor Energy Heat and light radiate outward from the Sun A tiny portion of the solar output strikes Earth Direct solar energy can be used by humans Conversion into electricity by photovoltaic cells Conversion Conversion into heat Controlled fusion is currently beyond human technology Controlled Essentials of Geology, 3rd edition, by Stephen Marshak Chapter 12: Riches in Rock: Energy & Mineral Resources Sources of Energy Solar energy stored via photosynthesis Chlorophyll stores solar energy in H-C bonds Water and carbon dioxide react to form sugar and oxygen 6CO2 + 12H2O + light → C6H12O6 + 6O2 + 6H2O H-C bonds release stored energy when broken (oxidized) Organic respiration (breakdown of food by organisms) Rapid thermal oxidation (combustion) Essentials of Geology, 3rd edition, by Stephen Marshak Chapter 12: Riches in Rock: Energy & Mineral Resources Sources of Energy Solar energy stored in fossil fuels Solar fossil Oil, natural gas, and coal derive from living organisms Oil, These materials store energy in preserved H-C bonds Created by photosynthesis, solar energy from the past Created Thus, oil, gas, and coal represent ‘fossilized sunshine’ Essentials of Geol...
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