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What is the sinking of regions of the earths crust lower elevation called?

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What is the lower boundary of crust?

The lower boundary of the Earth's crust is called the Mohorovičić discontinuity, or Moho for short. It is typically located between 5 and 10 kilometers beneath the ocean floor and around 20 to 70 kilometers beneath the continents.


The lower boundary of earth's crust is called what?

The lowest spots in the Earth's crust are found in the Mariana's Trench. It is located in the floor of the western North Pacific Ocean


Why does water float on Earth's surface?

Oceanic crust is denser than continental crust, it floats lower in earths mantle.


Why are there are almost no extrusive ultra basic rocks in earths crust?

There are almost no extrusive rocks on the earths surface because they are all under the earths surface. They are mainly lower than the earths surface.


What are four layers that make up Earths atmosphere?

lower core, upper core, mantle, and crust


Where would gneiss be in the US?

Gneiss is a part of the earths lower crust. No matter where you drill you will eventually uncover gneiss.


How far down does earths mantle go?

The Earth's mantle extends from the base of the crust down to a depth of about 2,900 kilometers (1,800 miles) at the boundary with the outer core. This region is divided into the upper mantle and lower mantle based on differences in composition and behavior.


How many degrees is the earths mantle?

According to Scientists, the earthâ??s mantle temperature averages between 4,000 to 6,700 degrees Fahrenheit or 2,200 to 3,700 degrees Celsius.


What portion of the earths crust is more dense oceanic or contenintal?

Oceanic crust is denser than continental crust. Oceanic crust has a density of about 3 g/cm^3, while continental crust has a lower density of about 2.7 g/cm^3.


What section of earths crust moves when an earthquake occurs?

The section of Earth's crust that moves during an earthquake is called a fault plane. This is where the two tectonic plates that are in contact with each other slip past one another, causing the ground to shake.


What is the definition of the crust of the earth?

The Earth's outermost layer of hard brittle rock is called the crust. The crust is typically about 23 miles thick beneath continents, and about 6.5 miles thick beneath oceans. The crust is relatively light and brittle compared to other Earth layers. Most earthquakes occur within the crust.