1. How do we know where the plate boundaries are located? What information could be used to map out the boundaries?
We can tell where boundaries are by where the faults are. For instance, if there is a large crack where different minerals and land features do not line up then that's probably where a plate boundary is located. We can also use seismographs to find where the faults happened, especially when an earthquake forms.
We can tell where boundaries are by where the faults are. For instance, if there is a large crack where different minerals and land features do not line up then that's probably where a plate boundary is located. We can also use seismographs to find where the faults happened, especially when an earthquake forms.
The picture on the left shows how seismographs can be used to find where the epicenter is and where faults occurred. The picture on the right shows how evidence on land can show where faults happened.
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^ We can tell there is a plate boundary when many volcanoes are near by. One Example is the ring of fire.
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2. How would we know faulting has occurred in an area? What might be signs or evidence people could observe to indicate faulting?
Miss matched layers could appear such as a road that appears to be curved oddly or a body of land that drops down in elevation in both directions. <-- This video show signs that a fault would have occurred |
^ This railroad is very unusual because it has a curved track. A track would be made in a straight line, not curved. This is evidence of faulting because the railroad has been bent from plates shifting.
This is an example of earth folding because we can see rock layers that have been bent. ->
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3. How would we know folding has occurred in an area? What might be signs or evidence people could observe to indicate folding?
We would be able to see different layers of earth that had been curved and distorted, or the land could be uneven. This Photo shows what a piece of land that has been folded would look like |