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Glowing avalanche
Freshly erupted magma forms hot puroclastic flow
The most dangerous type of volcanic eruption.
Glowing avalanche
Temperature reach up to 1,200 degrees celcius.
Hot pyroclastic flow
Where does the pyroclatic flow surge down?
Down the flanks of a volcano
How fast does a pyroclatic flow surge down?
Several hundred kilometers per hour
Who studies the materials that flow out of a volcano?
Geologists
Four types of lava
Basalt, an igneous rock Rhyolite, resembles a granite Andesite Pumice
Dark colored lava that contains a lote of water.
Basalt
Lava that is rich in iron and magnesium.
Basalt
Light colored lava that contains very little water.
Rhyolite
Lava that contains iron, magnesium and silica.
Rhyolite
Resembles granite
Rhyolite
Lava that has a chemical composition similar to that of the dark and light colored.
Andesite
A different variety of igneous rock.
Andesite
Lava the contains large amounts of gas.
Pumice
It forms a rock with manh holes in them.
Pumice
Why does holes form? (Pumice)
The gas bubbles are trapped as the lava hardens.
Scoria
Pumice