Question

Classify rocks into igneous sedimentary and matamorphic

Answer 1

• Igneous — they form from the cooling of magma deep inside the earth. They often have large crystals (you can see them with the naked eye).
• Metamorphic — they are formed through the change (metamorphosis) of igneous and sedimentary rocks. They can form both underground and at the surface.
• Sedimentary — they are formed through the solidification of sediment. They can be formed from organic remains (such as limestone), or from the cementing of other rocks.

Answer 2

Igneous Rocks: Igneous rocks are formed from the solidification of molten rock material. ... Examples of intrusive igneous rocks are diorite, gabbro, granite, pegmatite, and peridotite. Extrusive igneous rocks erupt onto the surface, where they cool quickly to form small crystals. Some cool so quickly that they form an amorphous glass.

Sedimentary Rocks: Rock that has formed through the deposition and solidification of sediment, especially sediment transported by water (rivers, lakes, and oceans), ice (glaciers), and wind. Sedimentary rocks are often deposited in layers, and frequently contain fossils.

Metamorphic Rocks: Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors.

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