Volcanoes

Question 1

Which plate boundaries have volcanoes?

Answer 1

Constructive (divergent) plate margins and destructive (convergent) plate margins

Question 2

What is an example of constructive boundary?

Answer 2

Mid-Atlantic ridge

Question 3

What are 3 examples of destructive boundaries?

Answer 3

Oceanic-Oceanic
Oceanic-Continental
Hot spots/Mantle plumes

Question 4

Which plate boundaries don’t have volcanoes?

Answer 4

Conservative
Continental-continental

Question 5

Where are shield volcanoes found?

Answer 5

Constructive/divergent margins

Question 6

Where are stratovolcanoes found?

Answer 6

Destructive margins

Question 7

What hazards are found at constructive margins?

Answer 7

Lava,Volcanic gas

Question 8

What type of lava is found at constructive margins?

Answer 8

Basaltic lavas

Question 9

What type of eruption is found at constructive margins?

Answer 9

Gentle or non-explosive

Question 10

What is the frequency of eruptions like at constructive margins?

Answer 10

Very frequent

Question 11

What type of volcanoes are found at constructive margins?

Answer 11

Shield volcanoes or fissure eruptions

Question 12

What are 2 examples of places that are constructive?

Answer 12

Iceland
East African Rift valley

Question 13

What hazards are found at destructive margins?

Answer 13

Pyroclastic flows, ash fall, lahars, volcanic gases, landslides etc

Question 14

What is the lava type at destructive margins?

Answer 14

Andesitic/Rhyolitic lavas

Question 15

What is the eruption type at destructive margins?

Answer 15

Explosive

Question 16

What is the frequency of the eruptions at destructive margins?

Answer 16

Infrequent

Question 17

What volcanoes are found at destructive margins?

Answer 17

Composite/ Stratovolcanoes

Question 18

What hazards are found at oceanic mantle plumes?

Answer 18

Lava and volcanic gases

Question 19

What hazards are found at continental mantle plumes?

Answer 19

Pyroclastic flows, ash fall, lahars and climate change

Question 20

What is the lava type found at oceanic mantle plumes?

Answer 20

Basaltic

Question 21

What is the lava type found at continental mantle plumes?

Answer 21

Andesitic/Rhyolitic lavas

Question 22

What is the eruption type and frequency at oceanic mantle plumes?

Answer 22

Non-explosive but very frequent

Question 23

What is the eruption type and frequency at continental mantle plumes?

Answer 23

Explosive but non frequent

Question 24

What volcanoes are found at oceanic mantle plumes?

Answer 24

Shield volcanoes

Question 25

What volcanoes are found at continental mantle plumes?

Answer 25

Calderas

Question 26

How can volcanic hazards be managed?

Answer 26

Preparedness

Question 27

What is 2 signs of a volcano may be about to erupt?

Answer 27

An increase in various gases
A rise in the level of lava lakes

Question 28

Name 3 ways people try to mitigate the effect of volcanic activity?

Answer 28

Risk assessments
Diversion
Barriers

Question 29

What are risk assessments for volcanoes?

Answer 29

Governments of countries carry out risk assessments and produce a series of alert levels to warn the public of the threat

Question 30

What are barriers for volcanoes?

Answer 30

Barriers can be built across valleys to protect property from lava flows

Question 31

What is the most common way to reduce the impact on people?

Answer 31

Evacuate vulnerable areas when risk becomes intolerable