To find the epicenter (the point on the earth's surface where an earthquake begins) during earthquakes, one need to view the seismogram (a record of the ground motion), and at least two other seismographs recorded for the same earthquake. Other instruments such as a map, a compass for sketching circles on the map, a ruler, and a pencil will also be used.
The following are the steps of the triangulation process in the correct order to find the epicenter during earthquakes:
Step 1: Subtract the time of P wave arrival from S wave arrival.
Step 2: See what the time difference is equal to in distance on a seismic wave chart.
Step 3: Draw circles representing the distances from at least three seismograph stations to the epicenter on a map.
Step 4: Find the point where all 3 circles intersect, and you've found the earthquake's epicenter.
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Answer:
There are three types of plate boundaries. Each of them have natural disasters that they cause.
Explanation:
1. divergent boundaries- two plates are moving away form each other and magma moves up into the empty space
a. two continental plates make a rift valley; such as the east african rift valley
b. two ocean plates make rifts and ridges; such as the mid-atlantic rift
2. convergent boundaries- a direct collision of one plate with another
a. one oceanic plate and one continental plate form volcanoes; such as mount saint helens
b. two continental plates push up onto each other and make a folded mountain; such as mount everest
c. two oceanic plates form an island arc; such as japan island
3. transform boundaries two plates slide past each other creating a fault
a. not many examples of this, but san andreas fault in california is one
I hope this was helpful!!
It is impossible to build a drainage system on the outside of the Sao Francisco river as buildings are built on the outside of the foundation.
The Subarnarekha is developing a small drainage system.
The Amazon basin is the largest drainage basin in the world.
The Urugay drainage system includes the greater part of southeastern Brazil, Paraguay, southeastern Bolivia and northern Argentina
So i would suggest putting the Amazon as it is the most common known and largest. Remember to use geographical terms!
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