Where does the Colorado River form and where does it end? What distance does it cover?

What is the difference between a mesa and a butte?

What is a faulty, such as the Echo Cliff Fault? What is the significance of a fault and how is it formed?

What is the purpose of the expe4dition? How is it financed?

What problems did the members of the group cope with during the expedition? How did they cope with them?

Why do three of the men decide to leave the expedition in the Grand Canyon? Why does Powell decide to continue? What factors does he consider?

Why did owell make a second expedition in 1870? What was different in this expedition?