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NAME_________________________________ CLASS____________________ DATE____________

1. Examine the Mars surface images given below, paying close attention to the craters.
   
   http://www.lpi.usra.edu/expmars/activities/channel0.gif
   http://www.lpi.usra.edu/expmars/activities/channel1.gif
   
   
2. Note your observations, findings, and ideas on your observations in each photograph.
   
   
   
   
   
   
   
   
3. Document your scientific explanation of how you think the Mars craters were formed.
   
   
   
   
   
4. Document the evidence you used to come up with your scientific explanation.
   
   
   
   
   
5. Examine the Earth/Moon Surface images given below and compare them to the Mars images.
   
   http://www.solarviews.com/cap/moon/farside.htm
   http://www.meteorcrater.com
   http://www.barringercrater.com/img/crater.jpg
   http://solarviews.com/cap/moon/clmsouth.htm
   http://solarviews.com/eng/tercrate.htm
   
   
6. Note your observations, findings, and ideas on your observations in each photograph.
   
   
   
   
   
   
   
   
   
7. Create a series of illustrations to represent the process of how you believe the craters were formed on Mars, the Earth, and the Moon (attach to this worksheet).
   
   
8. What kind of model did you use?
   
   
   
   
9. Review your scientific explanations from your first observations and make revisions based on your comparisons of the surfaces of the Earth/Moon and Mars. Did your explanation change?
   
   
   
   
   
   
   
10. Document the evidence for your revised scientific explanation. What caused you to change your explanation.
    
    
    
    

Please send any comments to:
Web site related: Curator
Content related: Joe Kolecki (Joseph.C.Kolecki@grc.nasa.gov)