What is it called when lava cools and hardens?

What is it called when lava cools and hardens?

geology. Igneous rocks form when magma, or melted rock from inside the Earth, cools and hardens. They can form above ground when magma erupts from a volcano as lava. They can also form deep inside the Earth’s crust and then be exposed at the surface by the overlying rocks wearing away.

What are the 4 types of lava?

Because of the role of silica in determining viscosity and because many other properties of a lava (such as its temperature) are observed to correlate with silica content, silicate lavas are divided into four chemical types based on silica content: felsic, intermediate, mafic, and ultramafic.

What is cooling magma?

Igneous rocks form when magma (molten rock) cools and crystallizes, either at volcanoes on the surface of the Earth or while the melted rock is still inside the crust. All magma develops underground, in the lower crust or upper mantle, because of the intense heat there.

What does lava become when it cools down?

When magma rises from deep within the earth and explodes out of a volcano, it is called lava, and it cools quickly on the surface. Rock formed in this way is called extrusive igneous rock. It is extruded, or pushed, out of the earth’s interior and cools outside of or very near the earth’s surface.

When magma cools and hardens which type of rock does it form?

igneous rock
The magma cools and hardens. The result is igneous rock. Magma’s temperature is 1400° to 2300 °F (760° to 1300 °C).

What is the process called when magma hardens into a rock?

What is the process called when magma hardens into a rock? Crystallization. Magma cools either underground or on the surface and hardens into an igneous rock. As the magma cools different crystals form at different temperatures undergoing crystallization.

Which type of lava when it cools is like broken glass?

Obsidian is an igneous rock occurring as a natural glass that is formed by the rapid cooling of viscous lava from volcanoes.

What is another name for lava?

In this page you can discover 22 synonyms, antonyms, idiomatic expressions, and related words for lava, like: magma, pumice, volcanic rock, igneous-rock, slag, volcano, volcanic, ashes, basalt, basaltic and crater.

Where does lava cool?

Since lava is a poor conductor of heat it cools slowly under neither the outside crust. Also the insulating properties of lava causes it to cool slower and slower over time.

What is cooling and crystallization?

In evaporation, the solvent is removed by heating the solution until the solvent is evaporated; in cooling crystallization, the solution is cooled until the solubility of the compound involved is reduced, causing it to separate from the solvent through crystallization.

What happens when magma cools?

As magma cools the elements within the magma combine and crystalize into minerals that form an igneous rock. Magma cools either below the surface or at the surface (magma that reaches the surface is called lava). As magma cools igneous rock is formed.