Lecture 18 – Terrestrial Planets, Part 4/4
Summary / Checklist of the Main Concepts to Understand and Remember

Mars  
• Does Mars have an atmosphere? How does it compare to the Earth's?  
• What evidence do we have for the existence of wind on Mars?  
red bullet How does the surface of Mars compare to that of other terrestrial planets?  
• Why is the color of the surface of Mars reddish?  
red bullet Why does Mars have much taller mountains than Earth and longer, deeper valleys?  
• Why did people believe for a long time that there might be intelligent life on Mars?  
• Have spacecraft from Earth orbited or landed on Mars or its moons?  
red bullet Do we have spacecraft currently in orbit or on the surface of Mars?  
• Name one piece of evidence for the fact that there was once water flowing on Mars.  
red bullet What do we currently know about the existence of water on Mars, now and in the past?  
• Name one piece of evidence that has been used to argue that there was life on Mars in the past.  
red bullet What is the present conclusion about whether there is or was in the past any form of life on Mars?  
     
     
     
     

Topics from the lecture page and textbook not listed above [or between square brackets] were not covered in class;
Underlined words indicate that I will expect students to remember a number or a name related to that topic.

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