what is the difference lava and magma?
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What is the difference between "magma" and "lava"? Scientists use the term magma for molten rock that is underground and lava for molten rock that breaks through the Earth's surface.
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Igneous rocks are rocks which solidify from molten material (magma). Cooling of the magma can occur beneath the surface (plutonic) or on the surface (volcanic). Igneous rocks can be identified by the determination of the composition and texture of the rock.
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The main difference between obsidian and onyx is how they are formed. Obsidian is formed when molten lava erupts from a volcano and cools quickly upon reaching land or water. ... Onyx, on the other hand, has a crystalline structure because it grew in the ground for a very long time. Onyx tends to have a duller finish.
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Felsic magma has more silica and alumina content, which makes magma more viscous. Mafic magma has less silica content and more iron and magnesium in it. ... Viscosity is determined by its composition and temperature: Felsic lava is more viscous than mafic lava.
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Igneous rock, also known as volcanic rock, is formed by the cooling of magma or lava. This type of rock is classified by cooling time and the type of magma it is formed from. The properties of these rocks vary greatly, including their chemical composition, grain structure, texture and color.
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Igneous rocks can have many different compositions, depending on the magma they cool from. They can also look different based on their cooling conditions. ... If lava cools almost instantly, the rocks that form are glassy with no individual crystals, like obsidian. There are many other kinds of extrusive igneous rocks.
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Igneous rocks are formed from lava or magma. Magma is molten rock that is underground and lava is molten rock that erupts out on the surface. The two main types of igneous rocks are plutonic rocks and volcanic rocks. ... When magma cools underground, it cools very slowly and when lava cools above ground, it cools quickly.
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Fire CAN get hotter than magma. That doesn't mean it automatically is. Magam at its coolest is hotter than fire at its coolest. While fire at its hottest is hoter than magma at its hottest.
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So magma is always present beneath a dormant volcano, and has solidified to solid rock under an extinct volcano. The magma that is there is part of the continuous stream of molten rock being forced upward, which never really ceases so long as the volcano is not extinct.
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A volcano results from collection of lava after several volcanic eruptions. Hot magma flows through a vent and cools upon reaching the surface of the earth. A volcanic mountain is made up of lava and piles of rocks.
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A volcano is formed when hot molten rock, ash and gases escape from an opening in the Earth's surface. The molten rock and ash solidify as they cool, forming the distinctive volcano shape shown here. As a volcano erupts, it spills lava that flows downslope. Hot ash and gases are thrown into the air.
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Extrusive igneous rocks form from magma that erupted onto the surface as lava , where it cooled quickly. On the other hand, intrusive igneous rocks form from magma that cooled slowly, deep underground.
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Magma is internal molten rock stored in volcanoes & the mantle. Lava is external magma that is ejected from volcanoes. The only similarity is their high temperature & destruction potential. What type of rock is formed by the solidification of molten magma?
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There are many different types of magma because there are so many different minerals and chemical components on Earth that could make magma.
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Basalt is a volcanic or extrusive igneous rock, meaning it has cooled at or near the surface, resulting in rapid cooling and the formation of small crystals. Granite, on the other hand, is a plutonic or intrusive igneous rock, meaning it cooled at depth, much more slowly, resulting in the formation of larger crystals.
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1) Lava flows are typically finer grained than intrusive igneous rocks. Why? ... Intrusive magma flows onto the Earth's surface and cools very slowly, allowing many small mineral grains to grow. C) The extrusive magma cools quickly so the mineral grains do not have time to grow.
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Igneous rocks are formed from lava or magma. ... Plutonic rocks are formed when magma cools and solidifies underground. Volcanic rocks are formed from lava that flows on the surface of the Earth and other planets and then cools and solidifies. The texture of an igneous rock depends on the size of the crystals in the rock.