Geology 1350 Lecture 3 Outline of Last Lecture I. CO2II. PlanetsIII. AtmosphereOutline of Current Lecture I. AtmoshpereII. PressureIII. Phases in Atmosphere (pauses)Current LectureWater came from volcanoes it used to be lavaMost carbon dioxide is in water and it cools the earth because of photochemicalMost oxygen comes from soil-nitrogen comes from soil b/c of fertilizers5% oxygen in atmosphereYou can compress air not water- pressure decreases with increase in height In air 78% is nitrogen and 21% is oxygen.Vertical structure of the atmosphere Pressure? Measure Pressure? Weight barometer (mercury)Heavier molecules are closer to earth due to gravityThe higher the pressure the higher mercuryMercury pressure decreases with altitudesAnaroid barometerThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.99% of earth’s atmosphere -Permanent gases are nitrogen and oxygen, the rest are trace gases (noble gases) and the most important are water vapor (very important greenhouse gas and increases in concentration 25 % each year), carbon dioxide, and ozoneTroposphere-decreases with heightStratosphere-increases with height, ozone belongs here and protects us from uv radiationMesosphere-decreases with height boring layerThermosphere-increases with
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