Earth’s Interior and Plate Tectonics?
Earth’s Interior and Plate Tectonics
2. Determine what type of plate tectonic boundary each of the following describes:
a. plates move alongside each other
b. plates move toward each other
c, plates move away from each other.
3. Describe how the gap is filled when two tectonic plates move away from each other:
4. Determine whether each of the following is likely to occur at convergent or divergent boundaries:
a. rift valley
b. continental mountains
c. mid-oceanic ridge
d. ocean trench
5. Explain how magnetic bands provide evidence that tectonic plates are moving apart at mid-oceanic ridges.
6. Predict what type of plate boundary exists along the coastline near Japan’s volcanic mountain ranges.
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Tagged with: coastline • divergent boundaries • earth • gap • japan • magnetic bands • mid oceanic ridge • mountains • ocean trench • oceanic ridges • plate boundary • plate tectonic • plate tectonics • rift valley • tectonic plates • volcanic mountain ranges
Filed under: Magnetic Sport Band
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a transverse
b convergent
c divergent
3. rift – fills in with an upwelling of magma
4a divergent
b convergent
c divergent
d not sure. maybe divergent
5. see explanation below
6. subduction
5. The minerals in the ocean plates are deposited when they are still able to orient themselves relative to the magnetic north pole. When they lithify, they are no longer able to reorient themselves to the magnetic pole. Every time there is a magenetic pole reversal, the magnetic minerals will allign themselves before they lithify. We go along with ships (maybe satellites now) and map it out. We can map the orientation of these bands with other locations on the earth. The bands will be roughly the exact same width on either side of the ridge.