Lesson 3 Types Of VolcanoesPresentation Transcript
Types of Volcano Starter- Dominoes.
Active volcano – liable to erupt.
Dormant (sleeping) volcano – a volcano which has not erupted for many years
Extinct volcano – a volcano which has not erupted for many thousands or millions of years
Types of 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).
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.
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.
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 cause roofs to collapse? 9. What could suffocate you? 5. What might happen to crops?