Science 15
Terms
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- The name of all the continents in 1 big continent.
- Pangaea
- Idea that Earth's continents were all one big continent.
- continential drift
- He propsed continential drift
- Alfred Wegener
- Molten material from Earth's mantle is forced upward to the surface at mid-ocean ridges & cools to form new seafloor.
- Sea-Floor Spreading
- Suggests Earth's crust and upper mantle are broken into sections called plates.
- Plate Tectonics
- Crust and Uppermost mantle
- Lithosphere
- The putty-like layer.
- Asthenosphere
- Boundary between 2 plates that are moving away from each other and spreading apart.
- Divergent Boundary
- Crustal material being destroyed where two plates meet head on.
- Convergent Boundary
- Formed when 2 plates slide past 1 another in opposite directions at different rates.
- Transform Fault Boundary
- Used to measure Earth Quakes
- Rictor Scale
- How many locations is needed to get the location of an earthquake?
- 3
- Magma forced up through cracks in the solid lithosphere and spills out as lava.
- Hot Spots