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Mountain and Volcano Quiz Prep. SOME STUDY IS HIGHLY RECOMMENDED BY THE MANAGEMENT. What Type of Volcano?. Cinder Cone. What are cinder cones made of?. Loose bubbly light weight chunks of rocks Rubble. Why are cinder cones not steeper?.
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SOME STUDY IS HIGHLY RECOMMENDED BY THE MANAGEMENT
Cinder Cones have moderately sloping sides because loose rubble doesn’t stack well.
The lava shield volcanoes are made of is very thin and travels long distances before it hardens.
They are very weak because many of their layers are nothing but ash or cinder. When too much pressure builds up, they blow their layers apart.
Which type of volcano makes a lot of noise and fireworks, but isn’t too likely to explode?
The Earth’s crust is moving, but the hot spot is not. Consequently, new volcanoes form over the hot spot after the old ones move away.
Why did they have a hard time locating the Yellowstone Volcano?
It is so big that you have to be in space to see the whole caldera.
The Cascade range was formed by a subduction zone where the oceanic plate is sliding under the continental plate.
Island arc volcanoes are caused by the convergence of 2 oceanic plates
The balance of the weight of a mountain against the buoyancy of its base which is submerged in the Earth’s mantle
They run from Georgia to Maine parallel to the Atlantic Coast
They formed by continental/continental convergence when North America crashed into Africa.
Why does Oceanic/Continental convergence usually only volcanoes while Continental/Continental convergence causes a few volcanoes AND folded mountains?
Because oceanic crust forms a continuous subduction zone and almost no collision while continental collisions only form a limited subduction zone, as they make a great big crash
The softer layers of uplifted rock wear away quicker than the harder layers