Deepest place video (GEOL 101)

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What causes the plates to move?

a cold, heavy plate causing subjecting into the mantle

What problems relate back to the subduction?

(both A and B) earthquakes & tsunamis

Does the type of rock play a role in the frequency and energy of earthquakes?

yes

What is the deepest place on Earth and how deep is it?

Challenger Deep, over 35,000 feet

What was the first mission to map the ocean floor?

H.M.S. Challenger

What did they see before they landed? What does this prove?

a flatfish, proved there was life was native to the trench

What is the Trieste? How thick are the walls?

a pioneering submarine that could withstand pressure of 16,000 PSI with its 5 inch walls

What is the relationship between the age of the subjected rock and the depth of the trench?

a strong relationship between the age of the sea floor and depth in water

Do the magnetic stripes on the ocean floor reveal the switching of the poles?

yes

If yes, what is the advantage of having a weak rock like serpentine present?

having a weak rock makes large powerful earthquakes less frequent

How does sonar work?

pumps sound waves into the water and the sound waves bounce off from solid ground and come back to the sonar, detecting the ocean floor features

What happens when the magnetic pole switches?

the North Pole switches positions with the South Pole


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