A “blanket” or “ocean” of air.. Layers of the Atmosphere There are 5 layers of the Earth’s...

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  • Slide 1
  • A blanket or ocean of air.
  • Slide 2
  • Layers of the Atmosphere There are 5 layers of the Earths Atmosphere: Exosphere (highest) Thermosphere Mesosphere Stratosphere Troposphere (lowest) Resources to find properties of these layers include: Your Cat. Events Book Pages 34-36 Your ScienceSaurus Book Pages 213-215 The Atmosphere and Ozone Layer BrainPOP Video The first page of your Atmosphere Lab
  • Slide 3
  • Composition of the Atmosphere Most of the gases came from volcanic eruptions.
  • Slide 4
  • Where did the oxygen in our atmosphere come from? Oxygen is arguably the most important gas in our atmosphere (for us). Our first atmosphere blew away and our second didnt have any oxygen for a long time. A primitive type of bacteria called Stromatolies were one of the first to use photosynthesis and produced tons of oxygen.
  • Slide 5
  • Our Protective Invisible Force Field