volcanism

Question 1

what comes out of a volcano?

Answer 1

1. lava
2. tephra
3. volcanic gases

Question 2

molten rock effusively erupted by a volcano

Answer 2

lava

Question 3

the pyroclastic (rock and glass fragments) material explosively erupted by a volcano

Answer 3

tephra

Question 4

exsolved and separated from magma as they reach the surface

Answer 4

volcanic gases

Question 5

a vent, hill, or mountain from wc molten or hot rocks w gaseous material have been ejected

Answer 5

volcano

Question 6

types of lava

Answer 6

1. pahoehoe
2. a’a
3. pillow

Question 7

types of tephra

Answer 7

1. ash
2. lapilli
3. block/bomb

Question 8

example of volcanic gas

Answer 8

sulfur

Question 9

type of volcano that is much wider than they are tall

Answer 9

shield volcano

Question 10

type of volcano that has steep sides and is more cone-shaped

Answer 10

stratovolcano/composite cone

Question 11

volcanoes that only erupt once

Answer 11

monogenetic cones

Question 12

steep-sided mound formed when lava is so viscous that it cannot flow away readily and accumulates

Answer 12

dome

Question 13

volcanoes with >2km diameter

Answer 13

caldera

Question 14

types of volcanic eruptions

Answer 14

1. effusive
2. explosive

Question 15

measures “explosivity” of volcano

Answer 15

volcanic explosivity index

Question 16

characterizes the size of a volcanic eruption through the amount of erupted magma

Answer 16

dense rock equivalent

Question 17

types of eruption

Answer 17

1. magmatic
2. phreatic
3. phreatomagmatic

Question 18

volcanic eruption in wc magma, gas, and pyroclast are erupted due to overpressure of volcanic gases

Answer 18

magmatic eruption