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What is a characteristic of subduction?
The correct answers are - B. Where oceanic crust meets continental crust, and C. Earthquakes.Subduction zones appear only on places where a crust of lower density (oceanic crust) meets a crust of higher density (continental crust).On the places where the oceanic crust meets the continental crust, the oceanic crust goes beneath the continental crust, this makes changes and readjustments in the inner part of the crust, and plus there's significant pressure from the mantle layer from beneath, so earthquakes are a very common occurrence.Check all that apply. A. Broad river deltas B. Where oceanic crust meets continental crust C. Earthquakes D. Two continents collide
How do the two types of crust vary?
Their main differences are in thickness, composition, density and age.Oceanic crust is thinner (5-10 km thick) than continental crust (20-70 km thick).Oceanic crust is composed of minerals that have higher concentrations of iron and magnesium (Mafic minerals) than those of the continental crust (which is richer in aluminum and silica - Felsic minerals).The rocks that make up the oceanic crust are typically more dense (3300 kg/m3) than those that make up the continental crust (2700 kg/m3).Oceanic crust is as a rule much younger than continental crust; the oldest oceanic crust is rarely over 200 million years in age, whereas the continental crust can exceed 3 billion years in age.
Where is the mantle located in the calm?
The mantle is that part of the Earth between the crust and the outer core. It's upper boundary is at the base of the crust at a depth below the surface which can vary between 7 and 35 km. It extends all the way to the Earth's outer core at a depth of around 2890 km.the Earths mantle is located between the crust and outer core of the Earth. it is the thickest layer.
How are oceanic and continent crust alike?
Well like volcanoes are on land, sea mounts are in oceans (sea mounts are underwater volcanoes) and a deep ocean trench is like a canyon on land. Continental slopes or continental shelves can be similar to cliffs or steep slopes on land.
Why does the crust vary in thickness from 5 to 50km?
Because of sea level and of mountains. It takes up or makes part of the crust.
Does earth's crust have the same density?
Density will vary from place to place with ocean crust being denser than continental crust.
How do Oceanic crust and Continental crust vary?
Oceanic crust is thin and composed mostly of dense basaltic rock.Continental crust is thick and composed mostly of light granitic rock.
What is a characteristic of subduction?
The correct answers are - B. Where oceanic crust meets continental crust, and C. Earthquakes.Subduction zones appear only on places where a crust of lower density (oceanic crust) meets a crust of higher density (continental crust).On the places where the oceanic crust meets the continental crust, the oceanic crust goes beneath the continental crust, this makes changes and readjustments in the inner part of the crust, and plus there's significant pressure from the mantle layer from beneath, so earthquakes are a very common occurrence.Check all that apply. A. Broad river deltas B. Where oceanic crust meets continental crust C. Earthquakes D. Two continents collide
What happens when oceanic crust and continental crust collide?
Subduction occurs on continental boundaries because oceanic sub floor is denser and heavier than the lighter more buoyant crust. The oceanic crust slides under the continental crust areas usually on a plate boundary. This is in a recycle style mode that constantly is remaking the ocean floor. The oldest rocks on the ocean bottom are a drop in the geologic time bucket, compared to the rock ages on land.
How do the two types of crust vary?
Their main differences are in thickness, composition, density and age.Oceanic crust is thinner (5-10 km thick) than continental crust (20-70 km thick).Oceanic crust is composed of minerals that have higher concentrations of iron and magnesium (Mafic minerals) than those of the continental crust (which is richer in aluminum and silica - Felsic minerals).The rocks that make up the oceanic crust are typically more dense (3300 kg/m3) than those that make up the continental crust (2700 kg/m3).Oceanic crust is as a rule much younger than continental crust; the oldest oceanic crust is rarely over 200 million years in age, whereas the continental crust can exceed 3 billion years in age.
How does soil vary from depth?
how does soil vary from depth
How does the ice sheet in Antarctica vary in depth?
Continental ice sheets vary in depth from about two miles at the South Pole, to negligible at the beaches. Ice shelves -- that float on water -- measure several hundred meters in depth. Sea ice that doubles the size of the continent in winter can form more than 10 feet thick.
How deep is the continintal slope?
The slope is the steep transitional area between the shelf and rise. The continental slope depth for the Atlantic Ocean is 3900 meters or in other words 12800 feet.
How wide is earths crust?
Earth's crust is typically between 5 to 70 kilometers (3 to 44 miles) thick, with an average thickness of around 40 kilometers (25 miles). However, this thickness can vary depending on location, with oceanic crust being thinner than continental crust.
How thick is the earth's curst?
The crust consists of two parts: the oceanic and the continental crust. All of these values vary slightly, of course, but oceanic crust is generally 4 - 7 miles (6 - 11 km) thick, whereas continental crust is much thicker, averaging 20 - 25 miles (30 - 40 km), reaching a maximum of 45 miles (70 km) beneath large mountain ranges (having to do with tectonics and isostacy, the "roots" of a mountain range).
Where is the mantle located in the calm?
The mantle is that part of the Earth between the crust and the outer core. It's upper boundary is at the base of the crust at a depth below the surface which can vary between 7 and 35 km. It extends all the way to the Earth's outer core at a depth of around 2890 km.the Earths mantle is located between the crust and outer core of the Earth. it is the thickest layer.
How does the atmosphere vary with altitude?
How does liquid pressure vary with depth
