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25 Cards in this Set
- Front
- Back
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Who proposed Continental Drift?
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Alfred Wegener
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What is theory of continental drift?
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All continents had once been joined together in a single land mass and have drifted apart since
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What was the theory rejected?
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the scientist could not explain what force pushes or pulls continents
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What is the name of the supercontinent in the image above?
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Pangea
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What is Plate Tectonics?
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A scientific theory that describes the large-scale motions of Earth's lithosphere.
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Which layer of the Earth is composed of rigid plates?
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Lithosphere
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What are the two types of tectonic plates?
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Ocean and continental plates
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What are the three types of plate boundaries?
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Divergent, Convergent, and Transform
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What type of boundary is illustrated?
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Divergent Boundary
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What type of boundary is illustrated?
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Convergent Boundary
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What type of boundary is illustrated?
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Transform Boundary
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Which plate boundary is constructive?
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Divergent Boundary
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Which plate boundary is destructive?
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Convergent Boundary
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What is a divergent boundary?
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When two plates that are moving apart
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What are 3 features of divergent boundaries?
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Mid-ocean ridges, rift valleys, Fissure volcanoes
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What is created from mid-ocean ridges?
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New oceanic crust
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What is a rift valley?
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Continental plates separate and a valley is formed.
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What is a convergent boundary?
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Boundaries between two plates that are colliding
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What are the three types of convergent plate boundaries?
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Continental-Oceanic
Oceanic- Oceanic Continental-Continental |
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What is formed when two continental plates collide?
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Mountains
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What is formed when two oceanic plate boundaries collide?
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Trenches and Volcanoes
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What is a Transform-Fault boundary?
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plates slide past each other
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What evidence supports plate tectonics?
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Fossil Distribution, Coastal Matching, Magnetic Seafloor stripping, and seafloor spreading.
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What is the driving force of plate tectonics?
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Convection Currents
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What is subduction?
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The process when less dense plate tectonic is forced under the more dense plate and into the mantle
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