1. 2 - 18 - 09 Mckenna K. Mrs. Farrell
Volcanoes
Mckenna K.
Mrs. Farrell

2. What is a Volcano? A volcano is a large, cone - shaped mountain.
There is a pocket of magma beneath them and many cracks through which lava can escape.

3. Hot Spots
Hot spot- an area where material from the mantle rises and then melts, forming magma.
Volcanoes form on top of a hot spot when magma comes through the crust and reaches the surface
Most volcanoes form at plate boundaries. Some are far away from boundaries and sometimes right in the middle of them.

4. What Causes a Volcano to Erupt?
Erupting volcanoes are like opening a can of soda. Carbon dioxide bubbles rush to the top causing it to bubble over.
Dissolved gases in a volcano are under tremendous pressure. When magma rises to the surface the gases expand, forming bubbles. As these bubbles grow bigger, the force exerted from them becomes greater. They push magma up to the top until it either explodes or finds some way out.

5. Landforms From Lava and Ash
Volcanic eruptions can create different landforms such as different kinds of volcanoes.
Shield volcanoes - wide gently sloping mountain.
Cinder Cone Volcanoes - steep cone shaped hill or small mountain
Composite Volcanoes - Layers of lava mixed with layers of ash build up to create this volcano/mountain.
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