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4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
4.3 volcanoes
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4.3 volcanoes

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  • Transcript

    1. Volcanoes Mr. Silva
    2. Vocabulary
    3. Vocabulary• Volcano-
    4. Vocabulary• Volcano- – Lava and pyroclastoc material built up on the earth’s surface around a vent.
    5. Vocabulary• Volcano- – Lava and pyroclastoc material built up on the earth’s surface around a vent.• Volcanism-
    6. Vocabulary• Volcano- – Lava and pyroclastoc material built up on the earth’s surface around a vent.• Volcanism- – Any activity that includes the movement of magma toward or onto the earth’s surface.
    7. Vocabulary• Volcano- – Lava and pyroclastoc material built up on the earth’s surface around a vent.• Volcanism- – Any activity that includes the movement of magma toward or onto the earth’s surface.• Vent-
    8. Vocabulary• Volcano- – Lava and pyroclastoc material built up on the earth’s surface around a vent.• Volcanism- – Any activity that includes the movement of magma toward or onto the earth’s surface.• Vent- – Opening through which molten rock flows onto the earth’s surface.
    9. Vocabulary• Magma- – Liquid rock produced deep inside the earth• Lava- – Magma that reaches the earth’s surface• Fissures- – Cracks through which lava flows• Hot Spots- – Areas of volcanism within plates
    10. Notes
    11. Notes1. Most of the asthenosphere remains solid, because of the great pressure of the surrounding rock
    12. Notes1. Most of the asthenosphere remains solid, because of the great pressure of the surrounding rock
    13. Notes1. Most of the asthenosphere remains solid, because of the great pressure of the surrounding rock i. Magma forms when mantle material flows to areas of lower pressure, or when fluids such as water are added
    14. Notes
    15. Notes2. Volcanism involves any activity that includes the movement of magma toward or onto the Earth’s surface
    16. Notes2. Volcanism involves any activity that includes the movement of magma toward or onto the Earth’s surface
    17. Notes2. Volcanism involves any activity that includes the movement of magma toward or onto the Earth’s surface a. Lava is magma that erupts onto the Earth’s surface
    18. Notes2. Volcanism involves any activity that includes the movement of magma toward or onto the Earth’s surface a. Lava is magma that erupts onto the Earth’s surface i. Vent- the opening that molten rock flows through to reach the surface
    19. Notes2. Volcanism involves any activity that includes the movement of magma toward or onto the Earth’s surface a. Lava is magma that erupts onto the Earth’s surface i. Vent- the opening that molten rock flows through to reach the surface ii. Volcano- the structure formed by the vent and volcanic material that builds up around the vent
    20. Notes Con’t
    21. Notes Con’t3. Major Volcanic Zones
    22. Notes Con’t3. Major Volcanic Zones a. Subduction Zones
    23. Notes Con’t3. Major Volcanic Zones a. Subduction Zones i. When an oceanic and a continental plate meet, the oceanic plate, the oceanic plate subducts, because it is more dense
    24. Notes Con’t3. Major Volcanic Zones a. Subduction Zones i. When an oceanic and a continental plate meet, the oceanic plate, the oceanic plate subducts, because it is more dense ii. The subducted plate dives deep into the asthenosphere, causing water to combine with nearby mantle material
    25. Notes Con’t3. Major Volcanic Zones a. Subduction Zones i. When an oceanic and a continental plate meet, the oceanic plate, the oceanic plate subducts, because it is more dense ii. The subducted plate dives deep into the asthenosphere, causing water to combine with nearby mantle material iii. This forms magma
    26. Notes Con’t3. Major Volcanic Zones a. Subduction Zones i. When an oceanic and a continental plate meet, the oceanic plate, the oceanic plate subducts, because it is more dense ii. The subducted plate dives deep into the asthenosphere, causing water to combine with nearby mantle material iii. This forms magma iv. Some magma erupts through the Earth’s surface forming:
    27. Notes Con’t3. Major Volcanic Zones a. Subduction Zones i. When an oceanic and a continental plate meet, the oceanic plate, the oceanic plate subducts, because it is more dense ii. The subducted plate dives deep into the asthenosphere, causing water to combine with nearby mantle material iii. This forms magma iv. Some magma erupts through the Earth’s surface forming: 1. Volcanic mountains- where a continental plate collides with an oceanic plate
    28. Notes Con’t3. Major Volcanic Zones a. Subduction Zones i. When an oceanic and a continental plate meet, the oceanic plate, the oceanic plate subducts, because it is more dense ii. The subducted plate dives deep into the asthenosphere, causing water to combine with nearby mantle material iii. This forms magma iv. Some magma erupts through the Earth’s surface forming: 1. Volcanic mountains- where a continental plate collides with an oceanic plate 2. Island arcs- where two oceanic plates collide
    29. Notes
    30. Notesb. Mid-Ocean Ridges
    31. Notesb. Mid-Ocean Ridges i. As the plates pull apart, magma wells up along the rift zone 1. The magma adds new lithosphere to the ridge
    32. Notesb. Mid-Ocean Ridges i. As the plates pull apart, magma wells up along the rift zone 1. The magma adds new lithosphere to the ridge
    33. Notesb. Mid-Ocean Ridges i. As the plates pull apart, magma wells up along the rift zone 1. The magma adds new lithosphere to the ridgec. Hot Spots
    34. Notesb. Mid-Ocean Ridges i. As the plates pull apart, magma wells up along the rift zone 1. The magma adds new lithosphere to the ridgec. Hot Spots i. Volcanoes that do not form at plate boundaries
    35. Notesb. Mid-Ocean Ridges i. As the plates pull apart, magma wells up along the rift zone 1. The magma adds new lithosphere to the ridgec. Hot Spots i. Volcanoes that do not form at plate boundaries ii. Hot spot is beneath the lithospheric plate, and the plate moves over it

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