Volcanoes

Question 1

How do volcanoes occur at destructive plate margins

Answer 1

Oceanic crust is denser and it subducts beneath the continental crust . In the mantle the lithosphere melts making molten lava.

Question 2

What does V.E.I mean?

Answer 2

V.E.i means volcanic eruption index

Question 3

What is the V.E.i of a shield volcano?

Answer 3

0-3

Question 4

What is the V.E.I of a composite cone volcano?

Answer 4

4-7

Question 5

4 characteristics of a composite cone volcano?

Answer 5

Steep sided slopes
Found at destructive plate margins
Lava has high viscosity
Lava made of andesite

Question 6

4 characteristics of a shield volcano?

Answer 6

Found at constructive plate margins
Gentle sided slopes
Lava has low viscosity
Lava made from basalt