What Is The Most Likely Reason Why A Region Is Higher Than Adjacent Regions?

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Why does the elevation of the seafloor decrease from the mid-ocean ridge to the abyssal plain quizlet?

Why does the elevation of the seafloor decrease from the mid-ocean ridge to the abyssal plain? The oceanic lithosphere cools and becomes denser. … Spreading along the Atlantic ridge added seafloor to plates on both sides. Subduction has consumed large areas of old oceanic crust in the Pacific.

What happens to material that is hotter than its surrounding material deep within the earth quizlet?

What happens to material that is hotter than its surrounding material deep within the Earth? The hot material slowly moves up toward the surface.

Which of the following is the best description of what the lithosphere contain?

The lithosphere is the solid outer part of the Earth. The lithosphere includes the brittle upper portion of the mantle and the crust the outermost layers of Earth’s structure. It is bounded by the atmosphere above and the asthenosphere (another part of the upper mantle) below.

Which of the following is the best description of what the lithosphere contains quizlet?

The lithosphere is composed of the crust and the rigid part of the upper mantle.

Why does the seafloor decrease in elevation with distance from the Mid-ocean?

Mid-ocean ridges and seafloor spreading can also influence sea levels. As oceanic crust moves away from the shallow mid-ocean ridges it cools and sinks as it becomes more dense. This increases the volume of the ocean basin and decreases the sea level.

Why is the mid-ocean ridge in the center of the ocean?

Mid-ocean ridges are geologically important because they occur along the kind of plate boundary where new ocean floor is created as the plates spread apart. Thus the mid-ocean ridge is also known as a “spreading center” or a “divergent plate boundary.” The plates spread apart at rates of 1 cm to 20 cm per year.

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What happens to material such as magma that is hotter than surrounding material deep within the earth?

What happens to material that is hotter than its surrounding material deep within Earth? The hot material slowly moves up toward the surface.

What are two factors that affect regional elevations?

Terms in this set (8)
  • Parts. – crust thickness. …
  • Crust Thickness. – regions with thick crust are higher than those with thin. …
  • Crust Density. – less dense crust = higher. …
  • Crust Temperature. – temp of crust and mantle. …
  • Compression of Crust. …
  • Heating of Crust and Mantle. …
  • Adding Material to Surface. …
  • Effects of Magma.

Which of the following best describes the temperature of materials typically erupted from volcanoes?

all units
Question Answer
Which of the following best describes the temperature of materials typically erupted from volcanoes? extremely hot
How fast do plates move relative to one another? cm per year
Oceanic crust is thinner and denser than continental crust
The typical shape of most volcanoes is conical

Which one of the following describes the lithosphere?

Lithosphere is the rigid rocky outer layer of the earth consisting of the crust and the solid outermost layer of the upper mantle. It extends to a depth of about 100 km.

Why is the lithosphere important?

Lithosphere provide us forests grasslands for grazing land for agriculture and human settlements and also rich source of minerals. The lithosphere contains different types of rocks such as the igneous sedimentary and metamorphic rocks it helps to provide the necessary nutrients required to plants.

What is lithosphere in short answer?

Lithosphere is the solid crust or the hard top layer of the earth. It is made up of rocks and minerals. It is covered by a thin layer of soil. It is an irregular surface with various landforms such as mountains plateaus desert plains valleys etc.

Which of these statements best describes the lithosphere The lithosphere?

Which of these statements best describes the lithosphere? The lithosphere is composed of the crust and the rigid part of the upper mantle.

What is the physical difference between the lithosphere and the asthenosphere?

The lithosphere is the brittle crust and uppermost mantle. The asthenosphere is a solid but it can flow like toothpaste. The lithosphere rests on the asthenosphere.

What likely caused much of the damage shown in this photograph in the 1906 San Francisco earthquake quizlet?

What likely caused much of the damage shown in this photograph in the 1906 San Francisco earthquake? They compress and then expand the rock in the direction the wave travels. Which of the following is a characteristic of P-waves?

What happens at mid-ocean ridges?

Mid-ocean ridges occur along divergent plate boundaries where new ocean floor is created as the Earth’s tectonic plates spread apart. As the plates separate molten rock rises to the seafloor producing enormous volcanic eruptions of basalt.

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What is the primary reason for the elevated position of the oceanic ridge system?

The primary reason for the elevated position of the ridge system is that newly created oceanic lithosphere is hot and therefore less dense than cooler rocks of the deep-ocean basin.

What occurs at mid-ocean ridges quizlet geology?

A mid-ocean ridge or mid-oceanic ridge is an underwater mountain range formed by plate tectonics. This uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.

What occurs in on the Mid-ocean region?

A mid-ocean ridge or mid-oceanic ridge is an underwater mountain range formed by plate tectonics. This uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.

Why was the discovery of mid-ocean ridges important in the further development of the continental drift theory?

Impact of discovery: seafloor spreading

Alfred Wegener proposed the theory of continental drift in 1912. … The discovery of mid-ocean ridges and the process of seafloor spreading allowed for Wegner’s theory to be expanded so that it included the movement of oceanic crust as well as the continents.

What causes tectonic plates to move?

Tectonic shift is the movement of the plates that make up Earth’s crust. … The heat from radioactive processes within the planet’s interior causes the plates to move sometimes toward and sometimes away from each other. This movement is called plate motion or tectonic shift.

What factors control the cooling time of magma within the crust?

What factors control the cooling times of a magma within the crust? The depth of the intrusion the shape and size of a magma body: the greater the surface area for a given volume of intrusion the faster it cools and the presence of circulating ground water: water passing through magma absorbs and carries away heat.

Why does magma produce on the right side of the arrow What is the temperature and pressure?

Why does magma produce on the right side of the arrow? On the right side of the solidus line is the region where rock will melt. The only other way we can make rock X cross the solid line and become magma is to move this line (arrow “d” on Figure 9.4) in other words change the melting temperature of the rock.

What happens to magma that is heated up at the core?

Decompression melting also occurs at mantle plumes columns of hot rock that rise from Earth’s high-pressure core to its lower-pressure crust. When located beneath the ocean these plumes also known as hot spots push magma onto the seafloor. … As the liquid rock solidifies it loses its heat to the surrounding crust.

How can regional elevation increase?

How is Regional Elevation Increased? Heating: -If region is heated rocks will expand.

What controls the regional elevation of the land?

Isostasy controls the regional elevations of continents and ocean floors in accordance with the densities of their underlying rocks.

What is true of the difference between regional mountain ranges and local mountains?

What is true of the difference between regional mountain ranges and local mountains? Local mountains are small features and do not involve regionally thickened crust. Regional mountain ranges are typically very long and involve regionally thickened crust.

What causes a volcano to erupt?

Although there are several factors triggering a volcanic eruption three predominate: the buoyancy of the magma the pressure from the exsolved gases in the magma and the injection of a new batch of magma into an already filled magma chamber. … This lighter magma then rises toward the surface by virtue of its buoyancy.

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Which answer best describes the temperature of basaltic lava erupting at the surface?

Basaltic lavas typically erupt at temperatures above 950 C.

Which of the following are characteristics of actively erupting volcanoes quizlet?

What are the characteristics of actively erupting volcanoes? Glowing orange lava flowing downhill. Fragments of molten rock blasting into the air. Billowing clouds of ash rising into the air.

What makes up the lithosphere?

Cutaway Earth

The lithosphere is the rocky outer part of the Earth. It is made up of the brittle crust and the top part of the upper mantle. The lithosphere is the coolest and most rigid part of the Earth.

How are the crust and lithosphere different from each other?

What is the difference between the crust and lithosphere? The crust (whether continental or oceanic) is the thin layer of distinctive chemical composition overlying the ultramafic upper mantle. … The lithosphere is the rigid outer layer of the Earth required by plate tectonic theory.

Which of these is false about lithospheric plates Brainly?

Explanation: Lithospheric plates do not have same thickness everywhere because the plates changes its thickness due to intense heat in the Earth’s core as these plates move from Earth’s crust and upper mantle to a deeper plasticine mantle.

Is Earth liquid inside?

The Earth’s interior is composed of four layers three solid and one liquid—not magma but molten metal nearly as hot as the surface of the sun. The deepest layer is a solid iron ball about 1 500 miles (2 400 kilometers) in diameter. Although this inner core is white hot the pressure is so high the iron cannot melt.

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