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The two types of igneous rock are extrusive, those formed from molten material at or on the surface; and intrusive, those that solidify from molten material below ground.

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Type of rock formed when lava or magma cools?

Igneous rock is formed when lava or magma cools and solidifies. This process can result in different types of igneous rocks, such as basalt, granite, and obsidian, depending on the speed of cooling and mineral content.


Is rock formed when hot magma cools and hardens?

No, rocks are formed when molten magma or lava cools and solidifies. This process can occur underground (intrusive igneous rocks) or on the Earth's surface (extrusive igneous rocks), leading to the formation of various types of rocks.


What does extrusive rock means?

Extrusive igneous rock is one of two different types of igneous rocks. The other kind is intrusive igneous rock. Intrusive igneous rock is formed when magma in Earth's lithosphere cools and hardens. Extrusive igneous rock is formed when lava on Earth's surface cools and hardens.


How is igneous rock form?

When magma, which is molten rock, cools, igneous rock forms. This can happen as a subsurface event, or it can occur as exposed magma solidfies at the surface after it emerges. The number of different "types" of rock that are formed are as varied as the material from which it forms, and are also affected by the way the rock cools. Use the link below and pick up more information at Wikipedia. By cooling magma and lava ! A+


Igneous rock is formed?

Extrusive igneous rock is formed by the eruption of volcanoes that produce lava which later cools. Intrusive igneous rocks are formed by the cooling and solidification of magma within the Earth's crust.


What kind of rock does magma form when it hardens?

If the magma cools on the surface of the crust, it is called extrusive igneous rock, such as pumice, basalt or rhyolite. If the magma cools inside the crust, it is called intrusive igneous rock, such as granite.


What Rock formed by the crystallization of magma?

Extrusive igneous rock is formed from the solidification of lava.Intrusive igneous rock is formed from the solidification of magma.


What are the three kinds of rocks tell how each formed?

Igneous, metamorphic, and sedimentary are the three types of rocks. Sedimentary is formed when layer of mud or silt build up gradually. Igneous is formed when molten magma cools. Metamorphic is formed when a type of rock changes to another type


What two rock types are formed by the transfer of heat?

Igneous rocks and metamorphic rocks are both formed by the transfer of heat. Igneous rocks are formed when molten rock (magma) cools and solidifies, while metamorphic rocks are formed when existing rocks are subjected to high heat and pressure, causing them to change their mineralogy and texture without melting.


What types of rock does lava formed?

When lava cools it forms extrusive igneous rock.


Which type of rock forms from magma?

magma is a mixture of several different types of rock.


What are two types of igneous rocks?

Two types of igneous rocks are intrusive igneous rocks, which form from magma that cools and solidifies beneath the Earth's surface, and extrusive igneous rocks, which form from lava that cools and solidifies on the Earth's surface.