Volcanoes

Question 1

Volcanoes can be mostly found in…

Answer 1

clusters and near tectonic plates

Question 2

according to Geologists, how many volcanoes are active and inactive on Earth?

Answer 2

more than 100,000 active and inactive volcanoes.

Question 3

Where are the most active volcanoes located?

Answer 3

The Alpine-Himalayan belt and the Circum-pacific belt

Question 4

Which stands as a proof for the collision of the African and Indo-Australian plate and the southern margin of the Eurasian plate?

Answer 4

The Alpine-Himalayan belt.

Question 5

This type of volcano has no history of eruptions but may erupt based on seismic indications of tectonic activity beneath the volcano. (activity)

Answer 5

dormant volcano

Question 6

This type of volcano may erupt any time. (activity)

Answer 6

Active volcano

Question 7

This type of volcano has no records of eruption and tectonic activity for a period of time.(activity)

Answer 7

extinct volcano.

Question 8

A path that traces the boundaries between several tectonic plates around the pacific ocean.

Answer 8

Ring of fire / Circum-pacific belt

Question 9

It contains about 75% of planet’s volcanoes.

Answer 9

Ring of fire / Circum-pacific belt

Question 10

These kind of volcanoes are tall steep mountains.

Answer 10

stratovolcano

Question 11

These kind of volcanoes have large depressions in the ground.

Answer 11

caldera

Question 12

These kind of volcanoes have have flatter and dome shaped structure.

Answer 12

shield volcano

Question 13

Underwater chains of volcanic mountains.

Answer 13

mid-ocean ridges

Question 14

What is magma called when it escapes out of the volcano?

Answer 14

lava

Question 15

Pyroclastic flow

Answer 15

It is when a volcano erupts w/ searing hot gas combined with ash formed in the mantle. This cam race down the sides of a volcano.

Question 16

Used to measure and classify eruptions.

Answer 16

Volcanic Explosivity Index (VEI)

Question 17

Who invented the VEI?

Answer 17

Scientists

Question 18

True/False: The VEI scale starts with zero and ends or is limited to 8.

Answer 18

False. it starts w/ zero but has no upper limit.

Question 19

VEI 8

Answer 19

Is recorded as the most catastrophic eruptions measured.

Question 20

Which volcano erupted at a scale of VEI 7 and what is its kind?

Answer 20

Mt. Tambora, a stratovolcano but is now a caldera due to the eruption.

Question 21

The Mid-Atlantic Ridge, Circum-pacific belt, Alpine-Himalayan belt are examples of?

Answer 21

Tectonically active areas

Question 22

True/False: Volcanoes form due to collision of plate tectonics

Answer 22

True

Question 23

Benefits of Ash from a volcanic eruption

Answer 23

provides nutrients to nearby soil, making the land fertile.

Question 24

Benefits of lava

Answer 24

When cooled down it hardens to rock and creates new landforms

Question 25

When and where did the most destructive eruption of Mt. Tambora occur?

Answer 25

It occurred in India, the year 1815

Question 26

A site of fault formation and earthquake generation.

Answer 26

Transform boundaries