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The Native Americans used the Igneous rock Obsidian as arrowheads. Granite is used as countertops and sculptures.

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12y ago

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What do you use Igneous rocks for?

igneous rocks are used for blilding and for long lasting moument.


What is extrusive igneous rocks used for?

Extrusive igneous rocks i think are used for carving and awesome things like that!


When molten rocks cools what rocks form?

igneous rocks


What is the main type of energy used to help convent metamorphic rocks into igneous rocks in the rock cycle?

The main type of energy used to convert metamorphic rocks into igneous rocks in the rock cycle is heat. The increase in temperature causes the metamorphic rocks to melt and then solidify into igneous rocks.


What is the main type of energy used to help convert metamorphic rocks into igneous rocks?

The main type of energy used to help convert metamorphic rocks into igneous rocks is heat. This heat can come from processes such as magma intrusion, volcanic activity, or tectonic movements, causing the metamorphic rocks to melt and recrystallize into igneous rocks.


What are igneous rocks that form over the surface?

Rhyolititcen rocks.


What do you call rocks that have been formed from the hot molten material within the earth's crust that has cooled and hardened?

Igneous rocks are formed by the solidification of molten materials.


Are igneous rocks made up of igneous rocks?

Sedimentary rock can be made up partially of igneous clasts, but igneous rock is igneous rock.


Who uses igneous rocks why?

Igneous rock can be used for making weapons. Blacksmiths can use them.


Why are igneous rocks useful?

Igneous rocks are important to science because scientist need to know about all the different types of things in our world today. The reason also because igneous rocks come from volvanoe and the stuff that comes out of a volcanoe is called LAVA /MAGma!


Why are igneous are called primary rocks?

Igneous rocks


Are volcanic rocks igneous rocks?

Yes. Volcanic rocks are extrusive igneous rocks.