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No, they do not form on the surface of the Earth. They are formed by the crystallization of magma within the Earth. All you have to remember is an intrusive rock forms within the Earth.

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Which type of rock does magma form when it hardens?

Magma forms igneous rock when it cools and hardens. Igneous rocks can be further classified as intrusive (formed below the surface) or extrusive (formed on the surface).


When melted rock cools and hardens an intrusive igneous rock is formed?

when it cools undera lot of pressure underground it is an intrusive igneous. If it cools on the surface of the earth then it is an extrusive igneous.


When melted rock cools or hardens on or under earth's surface it forms what rock?

Igneous rock. Extrusive igneous rock forms at or near the surface, intrusive igneous rock forms below the surface.


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.


Intrusive igneous rocks form when hardens and cools beneath Earth and surface.?

The substance that cools beneath the earths surface when an intrusive igneous rock forms is Magma. Magma is a molten material made up of rocks and minerals.


What hardens and cools beneath earth's surface when an intrusive igneous rock forms?

The substance that cools beneath the earths surface when an intrusive igneous rock forms is Magma. Magma is a molten material made up of rocks and minerals.


What Forms when molten rocks cools and hardens?

When molten rock cools and hardens, it forms igneous rock. Igneous rocks can be classified as intrusive (formed beneath the Earth's surface) or extrusive (formed on the Earth's surface). Examples of igneous rocks include granite, basalt, and obsidian.


What Igneous rocks have large crystals and form when melted rock cools slowly and hardens underneath earth's surface?

They are called intrusive igneous rocks.


What Intrusive igneous rocks form when hardens and cools beneath earth's surface?

The substance that cools beneath the earths surface when an intrusive igneous rock forms is Magma. Magma is a molten material made up of rocks and minerals.


When melted rock cools or hardens on it under earths surface it forms rock?

Igneous rock. Extrusive igneous rock forms at or near the surface, intrusive igneous rock forms below the surface.


What rock forms when melted rock from inside the earth cools and hardens?

Igneous rock forms when melted rock from inside the Earth cools and hardens. This process can happen either beneath the Earth's surface, forming intrusive igneous rock, or at the surface, forming extrusive igneous rock. Examples include granite, basalt, and obsidian.


What are the ways igneous rock can form?

intrusive igneous rock: magma cools and hardens in the earth and later forms an intrusive igneous rock. extrusive igneous rock: magma flows onto earth's surface and becomes lava. Then, lava cools and hardens above earth's surface and later forms an extrusive igneous rock.