Quiz Over Chapter 6: Volcanoes

Quiz over Chapter 6: Volcanoes

1.Identify a stratovolcano.
A. A
B. C
C. D
D. G

2 . Hawaii is an example of this type feature.
A. Strato-Volcano
B. Shield-Volcano
C. Cinder Cone
D. All of the choices are correct.

3. Which volcanoes are most likely to explode and why?
A. Strato- because the magma is more viscous than in shield volcanoes
B. Strato- because the magma is less viscous than in shield volcanoes
C. Shield- because the magma is less viscous than in strato volcanoes
D. Shield- because the magma is more viscous than in strato volcanoes

4. How often is there a casualty-producing or damaging eruption somewhere in the world?
A. Once a day
B. Once a month
C. Once a year

5. Where are most volcanoes located?
A. At mountain ranges
B. At convergent plate boundaries
C. At divergent plate boundaries

6. Which type of magma formed the Hawaiian Islands?
A. High silica magma such as basalt
B. Low silica magma such as basalt
C. High silica magma such as rhyolite
D. Low silica magma such as rhyolite

7. What evidence indicated that Mount St. Helens was going to erupt?
A. Gas emissions
B. Changing shape
C. Earthquakes
D. All of the choices are correct.

8. Why were trees knocked down for tens of kilometers north of Mount St. Helens?
A. The lava swept over them.
B. A landslide swept over them.
C. The blast effect swept over them.

9. Crater Lake in California formed in one of these.
A. Lava plateau
B. Caldera
C. Fumerole

10. Magma is molten rock below the surface. Lava is erupted magma.
True False