Hi could I please get help answering these questions about Earths surfacea.) Why is there about 4000 meters between the average depth of the ocean and the average elevation of land? b.) What processes tend to drive the Earth’s surface to sea level? c.) Draw the distribution of the Earth’s surface if all plate movements were to stop for 200 million years? Elevation (Kilometers)67780SFWN-ONWAS NODepth (Kilometers)112420Land - 29.2%Ocean 70.8%16 128Percent of Earth's Surface4OTO OMt. Everest = 8850 metersMountainsAvg. elevation ofland = 840 metersContinentalmarginMillions of square kilometers50 100 15020Percentage of area.20040250Sea level.Avg. depth ofoceans 3729 meters30060Deep oceanTrenchesMariana Trench = 11,022 meters350 400 45080500100

According to the diagram, the average depth of the ocean is 3729 metres, while the average elevation of land is 840 metres. This indicates that the two are separated by roughly 4000 metres.There are a few reasons for this difference. One reason is that the Earth's crust is not uniform. Some areas, such as the ocean basins, are made of thinner crust that is more easily depressed by the weight of the water. Other areas, such as the continents, are made of thicker crust that is more resistant to depression.The Earth's mantle's continuous flow is another factor contributing to the differences. The continents are carried along with the mantle as it moves. Ocean basins and mountains were created as a result of a process called plate tectonics.The thicker crust of one continent may push over the thinner crust of the other when two continents collide. Deep ocean trenches are produced by this subduction process. At 11,022 metres, the Mariana Trench in the Pacific Ocean is the lowest point on Earth.Over time, the continents rise and fall due to the continuous movement of the mantle. The weight of the glaciers that covered a large portion of the Earth during the previous ice age is what caused this process, known as isostatic rebound. The continents rose as a result of the weight being released by the melting glaciers.The distribution of land and water on Earth today is the result of these factors working together. The continents are higher than the ocean basins because they are composed of thicker crust, which is more resistant to depression.The thickness of the Earth's crust, the movement of the Earth's mantle, and plate tectonics all contribute to the 4000-meter discrepancy between the average depth of the ocean and the average elevation of land.Isostatic rebound is the primary mechanism that raises the Earth's surface to sea level. The continents rise in elevation as a result of the melting of glaciers and the removal of ice from the continents. This process will eventually bring the average elevation of the land closer to sea level.Over 200 million years, if all plate movements ceased, the Earth's surface would eventually become more uniform. The ocean basins would keep receding as the continents continued to rise in elevation and rebound. The average elevation of the land would eventually get closer to sea level, transforming the surface of the Earth into a planet mostly covered in water.

Answered: Elevation (Kilometers) 56899 +…

Applications and Investigations in Earth Science (9th Edition)

9th Edition

ISBN:9780134746241

Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa

Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa

Chapter1: The Study Of Minerals

Section: Chapter Questions

Problem 1LR

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Hi could I please get help answering these questions about Earths surface

a.) Why is there about 4000 meters between the average depth of the ocean and the average
elevation of land?
b.) What processes tend to drive the Earth’s surface to sea level?
c.) Draw the distribution of the Earth’s surface if all plate movements were to stop for 200
million years?