Hazards Associated With Volcanoes:

Question 1

What is a LAHAR?

Answer 1

A mixture of volcanic material and water that forms a mudflow.

Question 2

How does a LAHAR occur?

Answer 2

When lava comes in contact with weather sources such as rivers.

Question 3

How dangerous is a LAHAR?

Answer 3

The MOST dangerous/deadliest.

Question 4

What does a LAHAR do?

Answer 4

Erodes life/objects in it’s path, taking anything and everything with it & gaining speed (up to 60km/h or more).

Question 5

What are POISONOUS GAS EMISSIONS?

Answer 5

Varied mix of gases in any volcanic eruption, such as Sulfuric Acid, Hydrogen Sulfide, Hydrogen Chloride & Hydrogen Bromide

Question 6

IMPACT of POISONOUS GAS EMISSIONS?

Answer 6

-Damaged eyes
-Carbon Dioxide = Global WARMING
-Sulfur Dioxide = Global COOLING
-Death

Question 7

CHARACTERISTICS OF: A Convergent Volcano

Answer 7

-Magma rich in silica
-More viscous
-More Explosive

Question 8

CHARACTERISTICS OF: A Divergent Volcano

Answer 8

-Magma low in silica
-Flows easily
-More Effusive

Question 9

CHARACTERISTICS OF: Explosive Volcano

Answer 9

-Found at subduction zones
-Low-temperature magma
-High viscosity
-Felsic
-Hard to predict eruptions
-Forms composite volcanoes
-Very destructive

Question 10

CHARACTERISTICS OF: Effusive Volcanoes

Answer 10

-Generally occurs at hotspots
-Mantle comes directly to the surface
-Hot lava
-Low viscosity
-Very mafic
-Flows easily
-Forms Shield & Flood Basalt volcanoes

Question 11

How does a HAZARD become a DISASTER?

Answer 11

The geological event must affect humans & exceed thee ability of society to cope with hazard.