Natural Hazards: Causes and Effects - Disaster Management Center ...

Lesson 4 - Self-Assessment Test
Multiple Choice
Circle the best answer(s):
1. Two appropriate secondary responses
to a volcanic disaster are:
a) emergency feeding and shelter
b) evacuation and relocation
c) evacuation and search-and-rescue
d) relocation and financial assistance
e) relocation and cash
2. Volcanoes that generate explosive-type
eruptions have:
a) silica-deficient magmas
b) a location directly over a divergent
plate boundry
c) silica-rich magmas
d) extremely large cones
e) magma originating from the depths
of the mantle
3. The majority of volcanoes are located
in:
a) the circum-Pacific belt
b) the mid-Atlantic line
c) East Africa
d) the African Rift Valley
e) Hawaii
4. The basic ingredients of a volcanic
eruption are:
a) gases and molten rock
b) gases and pumice
c) ash and gases
d) magma and lava
e) magma and solid rock fragments
5. Geologists group volcanoes into four
types. Two of the four are:
a) cinder cones and shield volcanoes
b) lava domes and magma edifices
c) cinder cones and bowl craters
d) stratavolcanoes and summit vented
e) none of the above
6. Volcanic ash mixed with rain or melted
snow can cause:
a) mudflows
b) roofs to collapse
c) blocked storm sewers
d) serious timber damage
e) all of the above
7. A dangerous secondary effect of an
island volcanic eruption may be:
a) ash fall on nearby islands
b) lava flows into the waterfront
c) tsunamis on nearby coastal areas
d) severe oceanic wave disturances
e) the breakdown of interisland
communications
8. A sudden break in volcanic activity
during an eruption period generally
means:
a) the danger is over
b) immediate evacuation of the area
may be necessary
c) an increased need for monitoring
d) increased earthquake activity within
the plate area
e) a reduction in silica content of the
volcano’s magma
9. Useful volcanic prediction methods
currently under study use: