Volcano

Question 1

What is a volcano

Answer 1

A volcano is an opening or vent in the surface through which molten material erupts and solidifies as lava

Question 2

Main vent

Answer 2

The pipe up the middle of the volcano

Question 3

Magma chamber

Answer 3

Source of the molten rock

Question 4

Crater

Answer 4

The depression at the top of the vent

Question 5

Parasitic cone

Answer 5

Secondary cone forming on the side of a volcano

Question 6

Volcanic bombs

Answer 6

Airborne material from the volcano

Question 7

Active volcano meaning

Answer 7

Recently erupted expected to happen again

Question 8

Dormant volcano

Answer 8

Hasn’t erupted for years but still could erupt

Question 9

Extinct volcano

Answer 9

Has not had an eruption for atleast 10,000 years and is not expected to erupt again

Question 10

What is a composite volcano

Answer 10

These are volcanies with alternate layers of lava and ash

Question 11

Shield volcano

Answer 11

These are volcanoes with gently sloping sides formed by basaltic lava

Question 12

Composite volcano lava

Answer 12

Highly viscous

Question 13

Shield volcano lava

Answer 13

Low viscosity

Question 14

How does lava effect shape of volcano (composite)

Answer 14

The thicker (highly viscous) lava creates a steep gradient

Question 15

How does lava effect shape of volcano (shield)

Answer 15

The thinner (low viscous) lava leads to a smoother ans gentle gradient

Question 16

What can you measure volcanic eruptions with

Answer 16

Vei - volcanic explosivity index

Question 17

What is a hot spot

Answer 17

An area of extreme localised heat within the mantle

Question 18

Hot spot examples

Answer 18

Indonesia and hawaii

Question 19

Volcano case study is on

Answer 19

Mount ontake

Question 20

Mount ontake background facts

Answer 20

Age - 100,000 years old
Eruption - september 27,2014
Type - composite volcano;inactive
Vei - 3

Question 21

Causes of mount ontake

Answer 21

Caused by the Amounts of pressure within the magma chamber

Question 22

Consequences of mount ontake

Answer 22

Death toll - 57
Buildings - covered in ash

Question 23

Responses to mount ontake

Answer 23

Public awareness
Volcanic disaster risk and management increase

Question 24

Why live near volcanoes

Answer 24

Environmental - Agriculture - fertile land/minerals from lava
Economic - tourism,geothermal energy
Social - cultural and religious reasons; schooling

Question 25

Volcanic hazards

Answer 25

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