Lesson 2 Plate Tectonics And Volcanoes

• 1. Plate names AfricanIndo-Australian Plate North American South American Eurasian Pacific Nazca Antarctic Pacific

2. Plate Boundaries. First task- To find out what happens at the 4 different plate boundaries. 3. Constructive plate boundary 4. Destructive plate boundary 5. Collision plate boundary 6. Conservative plate boundary 7. Task

• Label the key features at the four plate boundaries.

• Then cut them out and stick them into your books.

• Underneath each I want a sentence to explain what is happening

• • Which way are the plates moving.

• • What happens as a result.

8. Homework.

• To find out the date and location of a recent earthquake and volcano and the impact these had on human activity.

9. Plate definitions 10. Label this cross section of a volcano

• Volcanic bombs, ash, lava, gases

• Magma chamber

• Parasitic cone

• Crater

• Main vent

11. Active volcano liable to erupt. 12. Dormant (sleeping) volcano a volcano which has not erupted for many years 13. Extinct volcano a volcano which has not erupted for many thousands or millions of years 14. Types of Volcano

• Composite Volcano

• Shield Volcano

15. 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).

16. Composite Volcanoes.

• Occur st destructive plate boundaries.

• Viscous (thick lava)

• The lava cannot flow far from the vent.

• Makes the volcano steep sided.

• Violent eruptions due to rapidly hardeneing rock which blocks vents and allows the pressure to build.

17. Dominoes.

• Lets test your knowledge so far.