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Bell work 9-2-11

Bell work 9-2-11. 1. What is the name of the longitude line 180*? 2. What is the surface features of a place? a. topography b. Time Zones c. Prime Meridian d. I.D.L 3. What is used to begin lines of longitude? a. topography b. Time Zones c. Prime Meridian d. I.D.L. Plate Tectonics.

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Bell work 9-2-11

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  1. Bell work 9-2-11 • 1. What is the name of the longitude line 180*? • 2. What is the surface features of a place? • a. topography b. Time Zones c. Prime Meridian d. I.D.L • 3. What is used to begin lines of longitude? • a. topography b. Time Zones c. Prime Meridian d. I.D.L

  2. Plate Tectonics

  3. Plate Tectonics • Earth’s crust is divided into huge sections called plates. • These plates are constantly moving. They move from 1-4 inches each year. • Fault lines are found along plate boundaries.

  4. Earth is like a chocolate dipped Ice Cream Cone

  5. 3 Types of Plate Movements • 1. Away from each other • Found underneath oceans • 2. Towards each other • 3. Side by side

  6. Plates move away from each other • 1. Sea floor opens up • 2. Hot molten rock fills the opening • 3. Builds up to form a mountain chain called a Mid-Ocean Ridge. • 4. Eventually forms Islands

  7. Islands forming in the Caribbean Sea

  8. Plates move towards each other • Subduction – the heavy plate goes under the lighter plate and pushes it up. • This forms high mountains that are often volcanic. • An example of this is the Himalayan Mountains

  9. Plates move side by side The land crumples to form low mountains (often volcanic) An example of this type of movement is the San Andreas fault in California. It is also why Baja California is separated from mainland Mexico. (see page 588)

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