Ice Caps on Mars vs Earth - PowerPoint PPT Presentation

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Ice Caps on Mars vs Earth

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Title: Ice Caps on Mars vs Earth


1
Ice Caps on Mars vs Earth
  • aka CO2 vs H2O
  • Baby its cold outside!

2
Polar Ice Caps
http//imgsrc.hubblesite.org/hu/db/2005/34/images/
i/formats/large_web.jpg
3
Carbon Dioxide
  • Two atoms of oxygen (pictured in red) and one
    atom of carbon (pictured in black)
  • This is a linear molecule and nonpolar
  • Carbon Dioxide solid
  • (CO2s or COC)

http//upload.wikimedia.org/wikipedia/commons/a/af
/Carbon-dioxide-3D-vdW.svg
4
Water
  • One atom of oxygen (pictured in red) and two
    atoms of hydrogen (pictured in black)
  • Ice, Water, Water Vapor
  • H2Os, l, g or H H
  • O
  • This is an asymmetrical molecule and polar

http//upload.wikimedia.org/wikipedia/en/0/07/Wate
r_molecule.svg
5
Non-Polar vs. Polar
http//poole.stfx.ca/Members/poole/ice2.gif
6
Phase Change Diagrams
32 F
32 F
Pressure at sea level
Pressure at sea level
http//hypertextbook.com/physics/thermal/pressure-
temperature/
7
Air Pressure
  • CO2 will phase change to liquid at about 9
    atmospheres (like being 90 feet under water)
  • As a solid, it is -78.2 C, or -108.7 F (that is
    90.2 C or 140.7 F COLDER than when water
    freezes!!!

http//apollo.lsc.vsc.edu/classes/met130/notes/cha
pter1/graphics/column.free.gif
8
Comets too!
  • Ingredients
  • Dry Ice 1½ lb 
  • Water 2 C
  • Ammonia 2 T 
  • Corn Syrup  ? t
  • Dirt/Sand 3 T 

Photographer Matthew Bate Comet Hale-Bopp Date 9
March 1997
http//www.astro.ex.ac.uk/people/mbate/comet2.jpg
9
Our Lab Today
  • I will guide you through the scientific method
    (inquiry investigation)
  • Starting with
  • Playing
  • Getting more info about dry ice
  • Asking questions
  • Predict the outcome

http//whyfiles.larc.nasa.gov/text/kids/Research_R
ack/images/scientific_method01.gif
10
Our Lab Today
  • Then we will
  • Design our experiment
  • Collect data
  • Do we need to redesign?
  • Analyze
  • Look at your graph. Was your prediction
    supported?
  • Communicate

----------- supported?
http//gigalock.com/sfiab/docs/20071210_Scientific
Method.png
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