Layers of the Atmosphere

Troposphere Closest to the Earth Tropo- means “changing” As altitude increases . . . – temperature _?_, Density _?_, all weather happens here! Shallowest Layer, but contains the most mass.

Stratosphere Strato means “layer” or “spreading out” Lower part (closest to Troposphere) is cold (-600C) Upper part is warmer. Why? Upper part contains the Ozone Layer The Ozone absorbs ultraviolet energy from the sun which is transformed into heat thus warming the air. http://www.npr.org/sections/thetwo-way/2014/10/25/358820835/-near-space-dive-sets-new-skydive-record-25-miles-above-earth Period 2 – Upper part contains . . . 3/12, Period 3 – Stratosphere. Period 4 – Thermosphere second slide.

Temperature decreases (-900C) Meso means “middle” Temperature decreases (-900C) Burns up meteoroids thus protecting the Earth’s surface Meteoroids: chunks of stone and metal in space https://www.youtube.com/watch?v=_szd9B3FU8Y

Thermosphere Made of two layers: Ionosphere & Thermosphere

Ionosphere Lower part of the Thermosphere Contains the Auroras Energy from the sun causes gas molecules to become _?_ (electrically charged particles). The “lights” that you see are caused by the particles from the sun that enter the ionosphere near the North Pole. The particles strike oxygen & nitrogen atoms which cause them to glow. https://www.youtube.com/watch?v=fVsONlc3OUY

Thermosphere Upper part of the Thermosphere Thermo means “heat” Energy from the sun strikes this layer first Temperature is very hot (up to 18000C), but if you took its temperature it would show 00C or below. Air is thin The air particles’ KE is moving very fast, but the particles are so spaced out that they do not collide.

Exosphere Exo means “outer” Where the satellites are located Long distance calls, Television

Graph Interpretation