earth science 21

Earth science 21 - Prof Jerry W Kousen Vincennes University Composition of Earths Atmosphere ERTH 100 Intro to Earth Science Earth's Atmosphere The

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Prof. Jerry W. Kousen ERTH 100 Vincennes University Intro to Earth Science Composition of Earth’s Atmosphere Earth's Atmosphere The Earth is surrounded by a blanket of air, which we call the atmosphere. It reaches over 560 kilometers (348 miles) from the surface of the Earth, so we are only able to see what occurs fairly close to the ground. Early attempts at studying the nature of the atmosphere used clues from the weather, the beautiful multi-colored sunsets and sunrises, and the twinkling of stars. With the use of sensitive instruments from space, we are able to get a better view of the functioning of our atmosphere. Life on Earth is supported by the atmosphere, solar energy, and our planet's magnetic fields. The atmosphere absorbs the energy from the Sun, recycles water and other chemicals, and works with the electrical and magnetic forces to provide a moderate climate. The atmosphere also protects us from high-energy radiation and the frigid vacuum of space. The envelope of gas surrounding the Earth changes from the ground up. Four distinct layers have been identified
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This note was uploaded on 04/19/2011 for the course ERTH 100 taught by Professor Jerryw.kousen during the Spring '11 term at Vincennes.

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Earth science 21 - Prof Jerry W Kousen Vincennes University Composition of Earths Atmosphere ERTH 100 Intro to Earth Science Earth's Atmosphere The

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