Aim: Describe the Layers of the Earth’s atmosphere? OBJ: Given activity sheet SWBAT describe the layers of the Earth’s atmosphere with 70% accuracy. DN:

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Presentation transcript:

Aim: Describe the Layers of the Earth’s atmosphere? OBJ: Given activity sheet SWBAT describe the layers of the Earth’s atmosphere with 70% accuracy. DN: HW check- Air Pressure Booklet Text, read p Work on Layers of the Atmosphere Activity Sheet ACT: Introduction to Layers of the Atmosphere (notes) Complete Layers of the Atmosphere Activity Sheet HW: Complete Layers of the Atmosphere Booklet; Work on Meteorology Activity Sheet; Meteorology Exam, Oct 28.

Layers of Earth’s Atmosphere Notes Layers of Earth’s Atmosphere are divided based on: Changes in TEMPERATURE atmospheric boundary layer = “pause” Tropopause: 12 km Stratopause: 50 km Mesopause: km

Room temperature 21ºC 72ºF Outer Space ºC decreasing temperature OZONE

Layers of the Atmosphere Notes Troposphere: weather present; where planes fly; sunlight warms earth surface & air above surface. Stratosphere: ozone (O 3 gas ; 3 atoms of oxygen) present; traps solar energy “ invisible blanket”; warms stratosphere. Mesosphere: thick layer; most meteoroids (asteroids, comets) burn up; loss of ozone. Thermosphere: temperature increase due to O 2 and N 2 molecules interact with solar energy to form heat. Ionosphere (lower): ions (charged particles) reflect radio waves back to Earth and produces the Aurora Borealis (Canada’s northern lights). Exosphere (upper): cell phone/TV communication satellites

Aurora Borealis