What geographical feature is responsible for carving out the
canyon floor?
1/ A storm
2/ A river
3/ A tornado
4/ A mountain
5/ A lake
Also in paragraph 5 the author states "Everything is dwarfed
by this mighty hole." What does the verb "to dwarf" mean?
1/To be surrounded by
2/To look down upon
3/To intimidate
4/To cause to seem small or insignificant
5/To enhance
What everyday item does the author use as a way of
describing how the Colorado river looks way down on the
canyon floor?
1/ A long rope
2/ A large stick
3/ An old shoelace
4/ A piece of paper
5/ A matchstick