l6 volcano.1pptx
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TRANSCRIPT
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Types of volcano
• Active
• Dormant
• Extinct
• Are not expected to erupt again in the future.
• Have not erupted for years but could still erupt.
• Has erupted recently and expected to erupt soon. Over 1000 of these!
Mix and match – which definition matches the key term?
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How do volcanoes form?
• Magma rises through cracks or weaknesses in the Earth's crust.
• Pressure builds up inside the Earth.
• When this pressure is released, e.g. as a result of plate movement, magma explodes to the surface causing a volcanic eruption.
• The lava from the eruption cools to form new crust.
• Over time, after several eruptions, the rock builds up and a volcano forms.
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Volcano
• Structure of volcano
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Volcanic emissions
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Your Turn!
• Complete the sheet labelling the correct parts of a volcano.
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Pop Up Volcano
• Ten minute challenge
• We are going to make a volcano!
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Homework
• Complete the ‘Where in the world’ sheet. You will need to use your Atlas!
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How close do you think you could get to an active volcano … in a 4x4?
• Find out here (11mins)