Chapter 16 and 17

Question 1

What volcano has magma that travels through the oceanic crust?

Answer 1

Hawaii

Question 2

What volcano has magma that travels through the continental crust?

Answer 2

Yellowstone

Question 3

Which volcano is characterized by hot springs and geysers?

Answer 3

Yellowstone

Question 4

Do both Yellowstone and Hawaii have evidence of past glaciers?

Answer 4

Yes

Question 5

Are volcanos characterized by an explosivity scale?

Answer 5

Yes

Question 6

Geologists try to better understand the magma plumbing system at the parks to predict future hazards. TRUE OR FALSE?

Answer 6

True

Question 7

How does a geyser differ from a regular hot spring?

Answer 7

Geysers are a hot water fountain while a hot spring is

Question 8

What two volcanoes does Hawaii National Park have?

Answer 8

Kilauea and Mauna Loa

Question 9

Kilauea

Answer 9

one of the world’s most active volcanoes

Question 10

Mauna Loa

Answer 10

world’s most massive shield volcano

Question 11

What is the largest known volcano in the world?

Answer 11

Yellowstone supervolcano

Question 12

What is the name of the largest volcanic system in North America?

Answer 12

Yellowstone

Question 13

How do hotspots form volcanoes?

Answer 13

a plume of magma rises from inside the earth pierces through the crust and forms a volcano

Question 14

Is Yellowstone explosive or effusive?

Answer 14

explosive

Question 15

Is Hawaii explosive or effusive?

Answer 15

effusive

Question 16

When the plate moves over the plume does it leave behind a chain of extinct volcanoes?

Answer 16

Yes

Question 17

Plume moves, plate doesn’t. Plate moves, plume doesn’t

Answer 17

Plate moves, plume doesn’t

Question 18

What happens to the older volcanoes who have no supply of magma?

Answer 18

they will eventually sink and erode

Question 19

Yellowstone is cut by the continental divide which means..

Answer 19

the topographic ridgepole of north america that seperates atlantic and pacific drainage

Question 20

Is yellowstone both a supervolcano and a caldera

Answer 20

Yes

Question 21

Do geysers look and behave the same?

Answer 21

No two geysers look or behave the same.

Question 22

Geyser

Answer 22

hot water fountain

Question 23

Hot Spring

Answer 23

hot underground water intersects to the ground surface

Question 24

What conditions need to be present for a geyser to function?

Answer 24

1) powerful heat source, usually magma
2) a plentiful supply of water
3) a watertight plumbing system capable of holding a large volume of water and withstanding the tremendous pressure of steam and superheated water

Question 25

What are common geyser traits?

Answer 25

• are in areas where rhyolite is abundant
• expel water from rain or snow, as opposed to magmatic water
• occur in water from rain or snow, as opposed to magmatic water
• occur in areas of recent or active magmatism
• occur where the supply of heat is abudant

Question 26

What are some more common geyser traits?

Answer 26

• are at high latitudes where precipitation rates are high
• formed following the last ice age, as inferred by stratigraphy and radiometric dates of sinter deposits
• most are transient features with periods of activity and dormancy

Question 27

Why does Hawaii not have geysers?

Answer 27

bc basalt is not a suitable rock for creating the scenario to trigger a geyser

Question 28

Where does freshwater come from in Hawaii?

Answer 28

volcanic-rock aquifers and dikes. basaltic rocks are the most productive aquifers in volcanic rocks.

Question 29

Can Hawaii have explosive eruptions like Yellowstone or mt. st helens?

Answer 29

Hawaii can have violent eruptions. Related to magma’s interaction with groundwater

Question 30

Volcanic Explosivity Index (VEI)

Answer 30

measured from 0-8