Volcanos Flashcards
What are the four types of volcano
Cinder cone
Lava dome
Composite
Shield
What are the primary impacts of volcanos
Tephra - rock fragments
Pyroclastic flows - high density mix of hot lava blocks, pumice, ash and volcanic gases
Lava flows
Volcanic gases/ash
What are secondary impacts of volcanos
Mud flows
Flooding
Volcanic lava slides
Tsunamis
Acid rain
Cimate change
What is a shield volcano
Shallow sided and broad. Formed when basalt cools as it runs down the summit Center.
Eruptions are usually gentle, and make good tourist attractions
Not too destructive
Not very viscus
Mauna Loa Hawaii - example
What is a composite volcano
Are formed from alternating eruptions of ash, tephra and lava which builds up the volcano in layers.
Dangerous sites
Often lead to large scale eruptions
Very viscus
Mount Rainer Washington - Washington
