A VOLCANO! AQA GEOGRAPHY 1.5 / 5 based on 2 ratings ? GeographyNatural hazardsGCSEAQA Created by: karolinaCreated on: 25-05-09 21:16 THE VOLCANO MAGMA RISES UP through cracks or weakenesses in earth's crust MART CREC 1 of 5 Pressure builds up inside the earth 2 of 5 Pressure released magma explodes to surface causing volanic eruption. 3 of 5 Lava from the eruption cools to form new crust. 4 of 5 Over time after several eruptions rock builds up and a volcano forms. Magma chamber = collection of magma Main vent = main places for magma to escape Secondary vent = smaller places through magma escapes Crater = created after an eruption, blows top off volcano 5 of 5
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