ESC 1000 Video
Notes Name: _________________
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Colliding Continents
Colliding Continents - What
created the land we see today? Powerful forces deep below the
Earth’s surface are propelling the continents on a restless journey across
the face of the globe. They will rip vast landmasses apart and send them
smashing into one another, to reshape our world. Oceans will disappear;
mountains will crumble, and rise again. And where great cities once stood…
there will be little more than fossils. |
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We investigate the forces that drive this dynamic process – to discover what created the land we see today. And what the future holds for us, on the incredible voyage of our ever-changing continents. What we are observing at the moment is only a snap shot of the global cycle that the Earth has been undergoing for the last 4.5 billion years and will continue to undergo even if we are not around any more. We look into the future to see what the world map will look like in 250 million years time. |
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Video Notes:
Chapter 7: Plate Tectonics: A Scientific Theory Unfolds
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Asthenosphere |
Island arc |
Plate tectonics |
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Continental drift theory |
Lithosphere |
Reverse polarity |
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Continental volcanic arc |
Magnetic time scale |
Ridge push |
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Convergent plate boundary |
Mantle plume |
Rift (rift valley) |
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Curie Point |
Normal polarity |
Seafloor is spreading |
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Deep-ocean trench |
Ocean ridge system |
Slab pull |
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Divergent plate boundary |
Paleomagnetism |
slab suction |
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fossil magnetism |
Pangaea |
Subduction zone |
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Fracture |
Partial melting |
Transform fault boundary |
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Hot spot |
Plate |
Volcanic island arc |
Questions:
(1)
(2)
Most Significant Discovery (discoveries)