Warm up  What’s in the flask?  Put on your magic glasses and draw what you see!

Energizer  How is π useful/important in Earth Science?  Create a list with your table.

What does this diagram tell you?

Properties of air  Air moves (can push up or down or all around!)  Air has volume

 What makes up the atmosphere?  Has it always been this way?

Evolution of the Atmosphere 1.Solar System forming – H throughout 2.Earth forms – Fusion starts in Sun, lose some light gasses during the explosions, also low gravity, low density stuff floats away

Evolution of Atmosphere  Planet crust solidifies, volcanoes begin erupting – spew gasses  CO 2, H 2 O (gas), N, etc …, too hot for liquid water  92% CO 2, - very warm, volcanic activity needs to slow for atmosphere to cool enough for H 2 O (gas) to condense to form clouds, rain, oceans etc …

Evolution of Atmosphere  3.8 bya – blue green algae evolves PHOTOSYNTHESIS  O 2 produced, not enough to affect the atmosphere for a long time, first reacts to form new minerals  Eventually affects atmosphere, removing CO 2 and increases the O 2  Begin forming the ozone layer

How does the Earth's atmosphere compare to that of other similar planets?

Greenhouse Gasses CO 2 (Carbon Dioxide) and CH 4 (Methane) even H 2 0 These gases absorb heat (blanket), release it slowly into space Greenhouse Effect - Greenhouse Effect -

 Describe what's happening?  Explain what the molecules are doing?

Comparing Atmospheres

What's in this tree?

 How does the plant get the food?

Plant Food?  Organisms, including plants, need food to survive. Which of these things do plants use as “food”?  Sunlightwater  Miracle growleaves  Sugaroxygen  Carbon dioxidechlorophyll  Soilvitamins

Carbon Cylce

Geologic Carbon Cycle

 What does the work of George Washington Carver have to do with last night’s homework?

Warm up  How does the atmosphere change as you move away from the Earth’s surface?

What happened in each layer?  Troposphere – gets colder, airplanes, more O2, us, weather, living things  Stratosphere – spy planes, ozone, weather balloons  Mesosphere – meteors burn up,  Thermosphere – ionosphere, aurora, magnetosphere

 How does energy move through the atmosphere

Energizer  How does energy get from the sun to the Earth?

Energy transfer  Radiation  Convection  Conduction  Insolation – incoming solar radiation  Absorption – energy absorbed  Reflection – bouncing off

Energy Transfer  Conduction – particle to particle  Convection – density differences  Radiation – “just floats”

How does cold air differ from hot air?  Cold air denser  Hot air – less dense, molecules further apart, more Kinetic energy – molecules are moving faster  Conduction convection radiation

Insolation  What is it?  How does it vary?

Insolation

 Color & Texture affect whether energy is absorbed or reflected  Absorption – black, dark, dull or bumpy surfaces  Reflection – white, light, shiny surfaces

Yearly variations





Energizer  Summarize lab findings  How does this relate to the “real world”?

Earth’s surfaces  Water  Land  Soil –  Sand  Snow –  forest

Albedo  Percent reflecting

Π Wrap Up  What did you notice from your calculations?

What are the major points of this chapter?

 What's the difference between infrared, ultraviolet and visible wave lengths?

 Predict how each atmospheric gas behaves with visible and infrared rays?

 What's the difference between the Greenhouse Effect and the hole in the Ozone Layer

Stratosphere  Ozone layer  Ozone molecule, O3, absorbs UV  With less O3  more skin cancer,  Less plankton  food chain disrupted

Green House Effect

 Predict what will happen in each balloon?

How does this relate to heat transfer in the atmosphere?

Human behavior  So..... what does each of these effect?  Smog  CO 2  CFC’S  Replanting a forest

Friday's Test!!!!  Multiple choice  Open response