Geography, volcanoes and earthquakes 0.0 / 5 ? GeographyNatural hazardsGCSEEdexcel Created by: emmajane_Created on: 12-05-14 16:26 When is a constructive plate boundary formed? When two oceanic plates are pulled apart 1 of 8 What type of volcano is formed at a constructive plate boundary? A shallow sided volcano 2 of 8 When does a destructive plate boundary occur? When the denser oceanic plate is subducted by the continental plate 3 of 8 When does a conservative plate boundary occur? When two plates slide past eachother 4 of 8 What is a collision zone? A type of destructive boundary, where two continental plates push together. Thjis pushes them upwards 5 of 8 How are seisometers used to predict volcanoes? They measure the Eaths tremors which will increase as the magma rises 6 of 8 How is aircraft used to predict volcanoes? They measure the amount of gas given off 7 of 8 What type of lava does shield volcanoes give off? Basaltic lava 8 of 8
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