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The Structure and Composition of the Atmosphere

The Structure and Composition of the Atmosphere. What is Earth’s atmosphere made of?. Composition of the Atmosphere (Dry Air). Atmospheric pressure at sea level = 14.7 lbs/in 2 = 101325 N/m 2 = 101325 Pa = 1013 millibars = 29.92 inches of mercury. Inches of mercury?.

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The Structure and Composition of the Atmosphere

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  1. The Structure and Composition of the Atmosphere

  2. What is Earth’s atmosphere made of?

  3. Composition of the Atmosphere (Dry Air)

  4. Atmospheric pressure at sea level = 14.7 lbs/in2 = 101325 N/m2 = 101325 Pa = 1013 millibars = 29.92 inches of mercury

  5. Inches of mercury?

  6. Describe how temperature changes as you go up from Earth’s surface to the upper reaches of the atmosphere

  7. Auroras occur, radio signals reflected Meteoroids burn up Much high f radiation is absorbed

  8. Thermosphere X-rays and Gamma Rays Mesosphere Stratosphere Troposphere Infrared from the ground

  9. Why does temperature in the troposphere decrease with altitude but temperature in the stratosphere increases with altitude? • Explain why the thermosphere has a high temperature but does not contain much heat. • Why is the sky blue? Why does it appear red at sunrise and/or sunset?

  10. How does the troposphere get heated? • What is albedo?

  11. What is weather? = the process by which energy in the atmosphere is balanced out. As long as more energy keeps coming into the atmosphere, it never gets completely balanced, so we continuously have weather. What is necessary for weather? • An atmosphere • A source of energy to the atmosphere • An unequal distribution of energy in the atmosphere

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