OBJECTIVES
Chapter 5 ‑ Volcanic Activity
1.
List and describe the factors that affect the viscosity of magma and predict
which kinds of magmas would be the most explosive.
2.
Name the principal gases that are associated with most volcanoes (201 students).
3.
Differentiate between the following volcanic features in terms of rock type and
structure:
a.
cinder cone
b. lava (volcanic) dome
c.
shield volcano
d. flood basalt
e.
composite (strato) volcano
f. ring of fire
g.
caldera
4.
Know what each of the following are, where they form and how they develop:
a.
lava
tube
h.
nuee ardente
b.
vent i.
aa lava
c.
pillow
lava
j.
pyroclastic
flow
d.
pahoehoe
lava
l. bombs
e.
intracanyon flow
m. volcanic
neck
f.
lahar
n. tree
cast
g.
ignimbrite
o.
fissure eruptions
5.
Differentiate between the following forms of pyroclastic
material:
a.
ash
b. pumice
c.
cinders
d. scoria
6. What is a
volcanic maar and how does one form?
7. What are the
Columbia River Flood Basalts and what area do they cover?
8. What is The
Ring of Fire
9.
List and describe the geologic hazards associated with different types of
volcanoes.
10.
Describe the possible impact that volcanic activity can have on global climate.
11. How many stages of
volcanism have the
12. What is the Boring
Lavas, when did they erupt and what area do they encompass?
13. Be familier
with the following volcanic rock types and what type of volcano they are
associated with.
a)
Basalt
f) Scoria
b) Rhyolite
g) welded tuff (ignimbrite)
c) Andesite
h) Ash tuff
d) Obsidian
e) Pumice
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