“The Atmosphere” 17.1.

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Presentation transcript:

“The Atmosphere” 17.1

What is Atmosphere? Atm = “Ocean of Air” Weather = Atm at a time Climate = Atm over time = Atm of a place

Composition of Atmosphere Gases & Particles around our planet. “Air” = Many Gases Nitrogen & O2 (99%) CO2 (important!)

Water Vapor (H2O) Ozone (O3) All Clouds & Precipitation 3 Oxygen Molecules Protects us from UV rays!

Atm. = 4 Layers Thermosphere Mesosphere Stratosphere Troposphere Based on tempo Thermosphere Mesosphere Stratosphere Troposphere

As you go UP↑… Pressure ↓ “Thinner Air” Temp? Varies. Colder… Then hotter! Then Colder?! Varies.

Earth Motion R_______ R________ OTATION Spinning on axis Days Going around Seasons OTATION EVOLUTION

Uneven Solar Energy Solar Energy is not distributed evenly over Earth! Light waves hit surface at different angles! Earth heats unevenly!

Solstice & Equinox

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