answersLogoWhite

0

1:A decrease in presume can lower the melting temperatures of materials in the asthenosphere. Such a decrease takes place along the not valley at a mid-ocean height, where the lithosphere is thinner and exerts less pressure

2: An increase in temperature can cause materials in the asthenosphere to melt. Such as increase occurs at a hot-spot.

3: I do not know.

User Avatar

Wiki User

16y ago

What else can I help you with?

Continue Learning about Natural Sciences

What are the three major ways that magma form forms?

Three ways that magma form:temperaturecompositionpressureIn addition, water causes the melting temperature to lower, which causes it to melt into magma


How does magma affect the rocks into which in intrudes?

Magma is molten rock that bubbles up along ocean ridges to form new crust. Another way that magma forms new crust is when it is expelled out of a volcano and becomes lava, which cools and hardens into crust.


Rock formed by magma?

Rock formed by magma is known as igneous rock. When magma cools and solidifies either below or above the Earth's surface, it forms igneous rock. Examples of igneous rocks include granite, basalt, and obsidian.


How fast is magma ejected out of a volcano?

The question shows a complete lack of knowledge and understanding about volcanoes. It is vague and needs phrasing more clearly. Do you mean who fast does a magma chamber empty? Do you mean the velocity at which magma moves? Basically, it depends on the type of volcano and the conditions of eruption.


What are the 3 stages in the formation of volcano?

When a continental plate and an oceanic plate move toward each other and collide, the edge of the oceanic plate goes down into the part of the mantle which consists of molten rocks. At a depth of 125 to 160 km below the earth's surface, the heat is so great that the rock which goes down is partially melted. This partial melting of rocks generates magma. The downgoing rocks also brings water. The other materials in the mantle interact with the water and also generate magma. Magma has lower density than the surrounding rocks. The gas from the melting rock which mixes with the magma makes it rise. As magma rises, it melts its way through the surrounding rocks and forms a large chamber where magma is stored until it finds it way out to the earth's surface.

Related Questions

What are the three major ways that magma form forms?

Three ways that magma form:temperaturecompositionpressureIn addition, water causes the melting temperature to lower, which causes it to melt into magma


Compare and contrast the three types of magma?

Basaltic Magma is typically forms when rocks in the upper mantle melt...Andesitic Magma is found along continental margins....Rhyolitic Magma forms when molten material rises and mixes with the overlying silica-and water-richcontinental crust...All 3 of them is a magma.


Describe two igneous structures that form under earths surface?

Igneous rocks are formed from the molten liquid minerals that lie below the earth's crust. Intrusive igneous rocks forms in magma chambers that are deep underground it is molten by heat and pressure. Extrusive igneous rocks forms when magma makes its way to Earth's surface when the molten rock erupts.Jennifer


How does magma affect the rocks into which in intrudes?

Magma is molten rock that bubbles up along ocean ridges to form new crust. Another way that magma forms new crust is when it is expelled out of a volcano and becomes lava, which cools and hardens into crust.


What different rocks are there?

There are 3 main types of rocks:Igneous RocksForms when molten rock cools.2 types of molten rock: magma, and lava.Intrusion: Forms when magma cools. Intrusion rocks take longer to form because magma takes longer to cool. Magma is under the Earth's surface, and it is very hot there. Imagine how long it would take for magma to cool down somewhere a thousand degrees!Extrusion: Forms when lava cools. Extrusion don't take as long to form, because lava cools much faster than magma does. Lava is at the surface, and the surface is WAY cooler than underground.Sedimentary RockForms when rocks/minerals/remains of plants or animals settle and accumulate.Forms in layers.3 types of sedimentary rock:Clastic - forms from accumulation of rock fragments and minerals.Biologic - forms from plant or animal remains.Chemical - forms when minerals precipitate out of a solution.MetamorphicPreexisting rocks that have changed form by heat and pressure.If you are looking for specific types, here are some brief examples:Igneous RocksBasaltPegmatiteGraniteTuffSedimentary RocksLimestoneCoalShaleSiltstoneMetamorphic RocksSlateGneissSchistMarble


What are the 3 states of the element bromine?

Liquid = Bromine Solid = Solid Bromine Gas = Bromine vapor


Rock formed by magma?

Rock formed by magma is known as igneous rock. When magma cools and solidifies either below or above the Earth's surface, it forms igneous rock. Examples of igneous rocks include granite, basalt, and obsidian.


How are minerals in magma could travel through the cycle and eventually end up in each of the three main classifications of rocks?

Well there are minerals every where so then the minerals could end up in the magma and then go threw the rock cycle.


How long can a bell pepper plant live and thrive under optimal growing conditions?

A bell pepper plant can live and thrive for about 2 to 3 years under optimal growing conditions.


Under peak performance conditions how many seconds should you be behind the person in front of you.?

3


Under peak performance conditions how many seconds should you be behind the person in front of you?

3


How fast does photosynthesis occur in plants under optimal conditions?

Photosynthesis in plants occurs at a rate of about 0.5 to 3 grams of glucose per square meter per hour under optimal conditions.