The Sea Floor Is Constantly Shrinking

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The sea floor is constantly shrinking.

In about 500 million years the pacific will not be there and the. Asked 3 29 2017 1 32 49 pm. It makes up 28 of the earth s surface and is home to the world s deepest oceanic trench the mariana trench. Updated 3 30 2017 1 59 42 am.

It is massive with an estimated area of 63 8 million square miles and an average depth of 13 000 feet. Log in for more information. The pacific ocean is the world s largest ocean. Vl hat happens at deep ocean trenches.

Because of sea floor spreading the ocean floor is constantly renewing itself. Seafloor spreading theory that oceanic crust forms along submarine mountain zones and spreads out laterally away from them. Rising magma cools and solidifies to form new rock that replaces the ocean floor. When the weight of an area of earth s crust increases the lithosphere.

Seafloor spreading is the continuous process of forming new igneous rock at mid ocean ridges by injection of magma that forms new seafloor. The seafloor is constantly shrinking. The pacific is slowly shrinking because it is folding the sea floor in towards the center of the earth this is called subduction. Seafloor spreading occurs along mid ocean ridges large mountain ranges rising from the ocean floor.

The process is continuous because forces cause opposite sides of the mid ocean ridge to constantly move apart making new room for the process to repeat. But the pacific ocean is slowly shrinking at a rate of 0 5 square kilometers 0 19 square miles per year due to plate tectonics. This idea played a pivotal role in the development of the theory of plate tectonics which revolutionized geologic thought during the last quarter of the 20th century. Explain the following statement.

Trenches located near south america alaska and eastern asia are continually removing sea floor as new seafloor is being added along the pacific s mid ocean ridges. The atlantic is growing as a result of seafloor being added along the mid ocean ridge that runs its length. In the mid 1900s scientists mapped the mid ocean ridges using sonar. The seafloor is constantly shrinking.

Vi hat is the evidence for sea floor spreading. The pacific is neither growing nor shrinking. The mid atlantic ridge for instance separates the north american plate from the eurasian plate and the south american plate from the african plate the east pacific rise is a mid ocean ridge that runs through the eastern pacific ocean and separates the pacific plate from the north american. The longest chain of mountains in the world is the system of mid ocean ridges.