Chapter 4.- Volcanoes

Question 1

How do volcanoes impact on human activities

Answer 1

Advantages of volcanoes / constructive effects
- fertile soil is created from breakdown of lava. E.G. Mount Vesuvius

• Geothermal springs provide hot water and central heating e.g Iceland
• new land formed e.g Hawaii
• tourist visit volcanoes or towns destroyed by volcanoes. E.g Pompeii

Disadvantages of volcanoes / deconstructive affects
- many killed and town and cities destroyed

• farming land destroyed
• lahars- rivers of mud- can cause great damage

Icelandic ash cloud - distribution of air travel

Question 2

What Are the features of volcanic mountains

Answer 2

The features of volcanic mountains are:

~ crater: The mouth of the volcano from which lava, ash, cinder and gases escape

~ vent: The crack in the surface of the ground from which the volcano emerges

~ the magma chamber (or reservoir) is down in the mantle. the lava/magma comes from here

~ magma: the molten rock while it is under the ground

~ ash, cinder and gas are thrown out during an eruption

~ Lava: the molten rick when it is above the surface

~ secondary volcano: a smaller volcano that breaks out on the side of a larger volcano