1. Volcano Flip Book Answers

2. What is it?
A volcano is a weak spot in the crust where magma is expelled
Two boundaries: divergent, convergent

3. Types of eruptions Explosive: More rare than non explosive
More destructive than non explosive
Blows molten rock into the air
-produce mostly pyroclastic material
Quiet (nonexplosive)
-Most common
-produced by calm flows of lava

4. What is inside? Magma chamber is a body of molten rock underground
Vent: cracks in Earth’s surface

5. Silica and Magma
The more silica that magma contains, the more explosive the eruption.
Pyroclastic material: forms when magma is blasted into the air and hardens.

6. Eruptions and climate change
As volcanic ash and gases spread through the atmosphere, they can block enough sun to cause global temperatures to drop

7. Types of volcanoes
Shield: forms from quiet eruptions, creates a wide-based, gently sloping mountain
Cinder cone: explosive eruptions, tall, narrow mountain, formed from pyroclastic material
Composite: formed from alternating quiet and explosive eruptions. Also called a Stratovolcano.

8. Other landforms created
Craters: funnel shaped pits near the top of a central vent
Calderas: large semi-circular depression that forms when magma chamber below has been emptied.
Lava Plateau: a landform caused by repeated eruptions of lava spread over a large, flat area.

9. stages
Active: smoking, active volcano: lava, smoke coming out or will soon
Dormant: sleeping volcano. Nothing happening but could
Extinct: dead volcano, unlikely to erupt again.