MULTIPLE CHOICE
 

1. 1 meter = ___ km?

a. 1
b. 10
c. 0.1
d. 100
e. 0.001
 

2. 1000 cm = ___ meters?

a. 1
b. 10
c. 100
d. 0.1
e. 0.01
 

3. A caldera volcano:

a. is the result of the largest and most explosive volcanic eruption
b. causes the ground to subside
c. is built from particles and  blobs of congealed lava ejected from a single vent
d. b and c
e. a and b
 

4. Lava domes:

a. are the simplest form of volcano
b. range in composition from dacite to rhylite
c. are masses of cooled lava
d. a and b
e. b and c
 

5. Basaltic lava in shield-volcanic eruptions:

a. can pour out of long fissures
b. can pour out of central vents
c. create lava domes
d. are usually very thin
e. all of the above
 

6. The origin of Yellowstone is:

a. stratovolcano
b. caldera
c. hotspot
d. ring of fire
e. volcanic dome
 

7. Volcanic cones consisting of lava rock interlayered with pyroclastic deposits is a:

a. cinder cone
b. caldera
c. volcanic dome
d. lava dome
e. composite cone
 

8. The word "phreatic" means:

a. explosion
b. steam-blast
c. nuclear explosion
d. pyroclastic blast
e. lateral blast
 

9. Endogenous means:

a. something that is native to an area
b. a person who studies volcanoes
c. growth from within
d. a person who studies earthquakes
e. growth from the ground up
 

10. The Hawaiian Islands:

a. are intra-plate volcanoes
b. are inter-plate volcanoes
c. are over a hot spot
d. a and b
e. b and c
 

11. The Jaun de Fuca Ridge is:

a. a submarine mountain chain in the Pacific ocean
b. a valley where older volcanoes are found in the Pacific ocean
c. a submarine mountain chain in the Atlantic ocean
d. the boundary between the Pacific and North American plates
e. a and b
 

12. The Cascades were formed by:

a. the collision of an oceanic and continental plate 
b. the collision of the Jaun de Fuca and North American plates
c. intra-plate volcanoes
d. a and b
e. a and c 
 

13. Divergent boundaries are found

a. at the mid-Atlantic ridge
b. in the Pacific ocean
c. in the rift valley
d. in the San Andreas fault
e. a, b and c
 

14. Earthquakes

a. occur along the other, brittle portions of tectonic plates
b. occur where temperatures in the rock are high
c. occur where temperatures in the rock are low
d. a and b
e. a and c
 

15. Composite volcanoes

a. have a central vent
b. have a cluster of vents
c. have dikes that form ribs to strengthen the volcano
d. lava flow through breakers in the crater walls or fissures
e. a, b, c and d 
 

16. Shield volcanoes

a. erupt explosively
b. erupt non-explosively
c. are the same as composite volcanoes
d. are the same as a stratovolcano
e. are found in the Cascades
 

17. Volcanic domes

a. can result in high-velocity ash flows
b. are found on Mount Pelee
c. are the same as lava domes
d. commonly occur within the craters of composite volcanoes
e. all of the above
 

18. Flood basalts

a. are theolitic basalt magma flows
b. are olivine basalt magma flows
c. are cast composite accumulation of lava
d. can be sub-horizontal
e. all of the above
 

19. Deep sub-marine volcanoes

a. usually disturb the ocean surface when they erupt
b. produce lots of blasting steam
c. cause rocks to be thrown great distances above the water
d. are found on Hawaii
e. none of the above
 

20. The Yellowstone hotspot

a. is formed from magma near the surface of a plate
b. shows the north-westward movement of the North American plate
c. is the largest hotspot in the world
d. is formed from rhylite magma explosions
e. is the most recent location of a hot spot that has affected land in Washington, Oregon, Idaho, California, and Nevada
 

TRUE/FALSE

1. More than half of the worlds active volcanoes are below sea level
 
 True  or  False
 
 
2. A continental plate subducts beneath an oceanic plate
 
 True  or  False
 

3. Shield volcanoes are built almost entirely on lava plateaus

True  or  False
 

4.  Cinder cone volcanoes rarely rise more than a thousand feet

True  or  False
 

5.  Yellowstone has erupted within the last 600,000 years

True  or  False