1. Why do volcanoes erupt? To describe the structure of volcanoes To discover the damage they can do Key terms: Crater, main vent, magma chamber, effects, responses L

2. Violent Volcanoes

3. Features of a volcano 1.Dust 2.Ash 3.Crater/lava 4.Volcanic bomb 5.Pyroclastic flow 6.Layers of lava and ash 7.Crust 8.Main vent 9.Magma chamber 10.Secondary vent

4. Sketching a volcano Mt Vesuvius, Naples, Italy Wide crater Top blown off during last eruption. Steep slopes Ash and dust on slopes TASK Draw a field sketch of Mt Vesuvius in Naples, Italy. Give it a title, locate the volcano and label features that you can see.

5. Mount St Helens USA The eruption of Mount St Helens is the most photographed eruption ever. It was the most expensive natural disaster in America’s history. Although the volcano was being monitored and watched by many people, the eruption still caught people by surprise.

6. Mount St Helens USA TASK Work in pairs or threes. Read through the statements. Order the statements (i.e. give them a number) Say whether the statement is either an EFFECT or a RESPONSE. *EFFECT – impact of a hazard **RESPONSE – action to taken by humans.

7. Mount St Helens USA

8. The power of the PYROCLASTIC FLOW!

9. Mount St Helens Recap TASK Pick five words that sum up this photograph. Be ready to explain why you picked your words.