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Atmosphere

Atmosphere. Troposphere. Closest to Earth Tropo means turning or changing 0-12km We live in this layer Tropo means changing, and conditions change more here than in any other layer This is where weather occurs As altitude increases , the temperature decreases . .

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Atmosphere

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  1. Atmosphere

  2. Troposphere • Closest to Earth • Tropo means turning or changing • 0-12km • We live in this layer • Tropo means changing, and conditions change more here than in any other layer • This is where weather occurs • As altitude increases, the temperature decreases.

  3. Troposphere continued • Contains most of the mass of the atmosphere • On average: 1 kilometer increase in altitude=6.5 degrees Celsius cooler

  4. Stratosphere • Strato means “layer” or “spread out” • Extends from the top of the troposphere (~12 km) to about 50 km above Earth’s surface. • Upper stratosphere in warmer than lower stratosphere • Contains the ozone layer • As altitude increases, temperature increases

  5. Mesosphere • Meso means middle • 50-80km • There is a drop in temperature from the stratosphere • Is the middle layer • Protects the Earth’s surface from being hit by most meteoroids • Temperatures can reach -90 degrees Celsius

  6. Thermosphere -The air is very thin, but very hot!-thermo means “heat”-Extends from 80km above Earth’s surface into space-Divided into 2 layers: Ionosphere and Exosphere

  7. Ionosphere and Exosphere Exosphere: • The outermost layer of the atmosphere • Exo means “out” Ionosphere: • Radio waves bounce off ions and go back to Earth’s surface • Brilliant light displays • Northern Hemisphere: Northern Lights

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