2. Have you ever thought about why
mountains and rivers look the way they
do?
• What’s different about the Hawaiian islands
and Mt. St. Helens?
• Why do some volcanoes explode and some
do not?
• How was the Grand Canyon formed?
• Why do some rivers appear sinuous while
others appear straight?
3. What kind of lava caused the eruption in the
1980? (5 min: Discuss with a classmate or
two)
4. How do you think the Hawaiian Islands were
formed? What kind of lava would do this?
a. Mafic lava
b. Felsic lava
c. Semi-felsic lava
d. Whaaa?
e. I’m asleep.
f. Where’s that???
5. Compare Mt. St. Helens, the
Hawaiian Islands, and Mt. Fuji.
What is similar/ different about
each? 5 min: Discuss with
someone.
6. What was the primary force in forming the Grand
Canyon?
A. Wind
B. Sunshine
C. Erosion
by water
sources
D. Happy
Thoughts
7. Why do you think the Shenandoah river is so
sinuous? 5 min: Discuss with someone you
have never met. GO!
