Lecture Summary 5

Lecture Summary 5 - Hi, You should be studying for the...

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Hi, You should be studying for the first exam scheduled for October 7 in lecture. Have a nice weekend. Mrs. Deming Lecture Summary (9/28, 9/30, and preview 10/5) Moving metallic material in Earth’s core generates the Earth’s magnetic field. A demonstration was done to show that moving electrons generate a magnetic field. Differentiation is the process that accounts for the precise ordering of a planet’s interior structure with densest elements found in the core. Surface features found on Earth were highlighted. The theory of continental drift involving plate motions was introduced and observational supports were given. Most of the surface features found on Earth are the result of tectonics, volcanism, erosion, and impacts. Preserved impact craters are rare on Earth due to geological activity and erosion. A demonstration was done to show that a depression can result from an impact or gases released from below. Earth’s atmosphere is unlike that of any other planet in the Solar System. Our planet’s atmosphere has changed over billions of years. The atmosphere of Venus is dominated by carbon dioxide and the surface pressure (90 x that on Earth) is "crushing." The tremendous atmosphere on Venus has led to a runaway greenhouse effect. The greenhouse effect was explained, with a diagram. Carbon dioxide (dominant on Venus) and water vapor (dominant on Earth) are two common atmospheric
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Lecture Summary 5 - Hi, You should be studying for the...

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