Lesson 3 Types Of Volcanoes
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Transcript of Lesson 3 Types Of Volcanoes
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Types of Volcano
Starter- Dominoes.
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Active volcano – liable to erupt.
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Dormant (sleeping) volcano – a volcano which has not erupted for
many years
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Extinct volcano – a volcano which has not erupted for many
thousands or millions of years
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Types of Volcano
Composite Volcano Shield Volcano
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Shield Volcano
• Occur at Constructive Plate Boundaries.
• Runny Lava that flows along way from the main vent.
• Gives the volcano gentle sides.
• Shield volcanoes almost never erupt violently due to the lava running free (no rocks).
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Composite Volcanoes.
• Occur at destructive plate boundaries.
• Viscous (thick lava)
• The lava cannot flow far from the vent.
• Makes the volcano steep sided.
• Violent eruptions due to rapidly hardening rock which blocks vents and allows the pressure to build.
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So why do people live near them?
• Watch the following movie about why people live near volcanoes.
• Now we have seen the video make a list of the advantages of living near a volcano.
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1. How can a Pyroclastic flow cause damage?
4. What might happen to Planes?
6. What impact would a mud flow have?
2. How would trees be effected?
3. What might happen to the sun?
7. What damage could a lava flow do?
8. What would causeroofs to collapse?
9. What could suffocate you?
5. What might happen to crops?