what is the rock?Explain the types of rocks.
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A rock is any naturally occurring solid mass or aggregate of minerals or mineraloid matter. It is categorized by the minerals included, its chemical composition and the way in which it is formed.
Rocks are usually grouped into three main groups: igneous rocks, metamorphic rocks and sedimentary rocks.
- Igneous rock, or magmatic rock, is formed through the cooling and solidification of magma or lava. The magma can be derived from partial melts of existing rocks in either a planet's mantle or crust.
- Metamorphic rocks arise from the transformation of existing rock types, in a process called metamorphism, which means "change in form". The original rock is subjected to heat and pressure, causing profound physical or chemical change.
- Sedimentary rocks are types of rock that are formed by the accumulation or deposition of small particles and subsequent cementation of mineral or organic particles on the floor of oceans or other bodies of water at the Earth's surface.
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Answer:
A rock is a natural mass of mineral matter that makes up the earth's crust.
Threes types of rocks are
i- Igneous rock
ii- Sedimentary rock
iii- Metamorphic rock
Explanation:
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