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Transcript of Plate Tectonics
"Help! My Continent is Moving!" And one more thing... is here Four Major Layers (pg 22-23)
Inner Core "Continental Drift" proposed by Alfred Wegener in 1910. He gathered evidence to support his ideas that the continents moved slowly over time:
Evidence from Land Forms (pg 30)
Evidence from Fossils (pg 30-31)
Evidence from Climate (pg 31)
Why? Convection in mantle! Three types of Plate Boundaries:
Divergent Boundaries (pg 45)
Convergent Boundaries (pg 46)
Transform Boundaries (pg 44) Inside the Earth Crustal Plates Move Slowly over Time Crustal Plates "Collide"
in Three distinct ways Continental Drift
"Plate Tectonics" http://www.classzone.com/books/earth_science/terc/content/visualizations/es0806/es0806page01.cfm?chapter_no=visualization Quick Animation - Click on the URL below Crustal plates move slowly over time Learning Target #2:
I can list and explain three pieces of evidence that support the theory of plate tectonics and continental drift. Learning Target #1:
I can draw and label a diagram of the earth's layers, including the crust, mantle, outer core, and inner core. Learning Target #4:
I can define the three types of crustal plate boundaries, and describe events that occur at each. Learning Target #3:
I can describe how convection in the mantle helps to explain the theory of plate tectonics and continental drift. Events that can occur at boundaries:
Rift Valleys "The Ring of Fire" A major belt of volcanoes that rims the Pacific Ocean. Volcanic belts form along the boundaries of Earth's plates. This is one of the most famous events that occur along crustal plate boundaries.