Volcanoes and resultant hazards: types of eruption and their products (nuées ardentes, lava flows, volcanic mudflows/lahars, volcanic landslides, pyroclastic flows, and ash fallout).

Question 1

What are the 2 Main types of Eruptions

Answer 1

1. Effusive
2. Explosive

Question 2

What is a effusive eruption

Answer 2

Continuous Low viscosity, Hot gentle lava flows

Question 3

What is a explosive eruption

Answer 3

High viscosity, Violent release of gas, ash and pyroclastic material

Question 4

What are the 3 lava types

Answer 4

Basalt, Andesite and Rhyolite

Question 5

What are Lava Flows

Answer 5

Slow moving molten rock flowing from a vent

Question 6

What are Volcanic Mudflows (Lahars)

Answer 6

A Fast-moving mixture of water, ash, and debris that follow river valleys and can bury areas.

Question 7

What are Volcanic Landslides and what trigger them

Answer 7

Collapse of volcanic material down slopes; can be triggered by eruptions or earthquakes.

Question 8

What are Pyroclastic Flows, Nuees Ardentes

Answer 8

Fast moving mixture of hot gas, ash and volcanic debris

Question 9

What is a Ash Fallout

Answer 9

Fine volcanic ash carried by wind

Question 10

Ash Fallout hazards

Answer 10

Disrupt air travel, damage buildings, and harm health.

Question 11

What are Jokulhlaups

Answer 11

Glacial outburst floods.