8A Comprehension
What is another name for the Circum-Pacific volcano belt?
The "Ring of Fire"
Volcano
A volcano is a depositional mountain landform built from solidified magma from deep in the earth.
What are the three kinds of volcanic emissions?
1) Liquid
2) Gaseous
3) Solid
Igneous
Having to do with molten or formerly molten earth materials
What are the three kinds of magmas?
1. Rhyolitic (most viscous)
2. Andesitic (middle viscous)
3. Basaltic (least viscous)
Magma
Magma is molten rock in the earth's interior.
What is pyroclastic material?
Pyroclastic material is solidified lava that ranges in size from microscopic dust to chunks weighing many tons.
Lava
Lava is molten rock that has escaped from the earth's interior.
What is a "glowing avalanche?"
A glowing avalanche is a mixture of hot solid particles in water vapor and other gases that is so dense it flows down a volcano's slope instead of rising in the air. (Also known as pyroclastic flow)
Tephra
Rock fragments and particles ejected by a volcanic eruption.