Name ___________________________________________           Date ___________________

1. What 3 planets are called the "terrestrial planets"? _______________________________________
   
   
2. What 2 planets are called the "gas giants"? ____________________________________________
   
   
3. Who first discovered the "canals" on Mars in 1877? ______________________________________
   
   
4. What instrument was used to see these "canals"? ________________________________
   
   
5. How does Mars get its red color? ____________________________________________________
   
   
The next section is True - or - False
6. T     F        The climate on Mars is extremely hot
   
   
7. T     F        The climate on Venus is extremely cold
   
   
8. T     F        Mars has seasonal dust storms
   
   
9. T     F        Venus has polar ice caps
   
   
10. T     F        Mars has polar ice caps
    
    
11. T     F        Venus, like Earth, has many active volcanoes
    
    
12. T     F        Volcanoes spew sulfur dioxide into the atmosphere
    
    

Questions taken from: Close Encounters: Exploring the Universe with the Hubble Space Telescope, by Elaine Scott, 1998.