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keith-schultz

Chapter 17: The Atmosphere - PowerPoint PPT Presentation

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Chapter 17: The Atmosphere
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  1. Chapter 17: The Atmosphere

  2. What is Weather? Weather: snapshot of atmospheric conditions such as temperature, precipitation, wind velocity, humidity, etc. Meteorology: Study of Weather

  3. What is the atmosphere? A blanket of gases surrounding the Earth.

  4. What makes up our atmosphere?

  5. Variable Components in Air • Water Vapor: Water in Gas form • Ozone: (O3 ) Absorbs harmful UV radiation from the sun • Solid Particles: Examples include sea salt, fine soil, smoke, and soot from fires, pollen, ash and dust from volcanic eruptions

  6. Atmosphere Layers

  7. Thermosphere Mesosphere Stratosphere Troposphere Earth Outer Space

  8. Troposphere • Lowest Layer • Temp decreases with height • This is where we live • Weather occurs here • Stratosphere - Second lowest layer - Temp increases with height and airplanes fly in this layer - Ozone (03) layer - Absorbs most of the damaging ultraviolet sunlight (UV-B) • Mesosphere - Third layer from earth’s surface • - Temp decreases - Majority of meteors burn up • Thermosphere - Outer most layer • - Very few molecules, temp increases because oxygen and nitrogen absorb harmful solar radiation. Satellites and Space Shuttle fly in this layer. Layers of the Atmosphere Still would feel cold Ozone Layer

  9. Atmospheric Structure Label the layers of the atmosphere below: 1._____________ - contains dust, moisture, weather. 2._____________ - contains protective ozone 3._____________ - coldest layer 4._____________ - contains auroras, high temperature but low heat 4. Troposphere Stratosphere 3. Mesosphere Thermosphere 2. 1.

  10. Bun Mayonnaise Lettuce Tomato Hamburger Bun The atmosphere is divided into layers like my favorite food…