Question

1.
ਚਟਾਨ ਤੋਂ ਕੀ ਭਾਵ ਹੈ ? ਇਹਨਾਂ ਦੀਆਂ ਕਿਸਮਾਂ ਦੇ ਨਾਮ ਲਿਖੋ ਅਤੇ ਕਿਸੇ ਇਕ ਕਿਸਮ ਦਾ ਵਿਸਥਾਰ ਨਾਲ ਵਰਣਨ
ਕਰੋ ?​

Answer 1

Answer:

A rock is a solid mass of geological materials. Geological materials include individual mineral crystals, inorganic non-mineral solids like glass, pieces broken from other rocks, and even fossils. ... A rock can be composed of only one type of geological material or mineral, but many are composed of several types.

Explanation:

There are three kinds of rock: igneous, sedimentary, and metamorphic.

Igneous rocks form when molten rock (magma or lava) cools and solidifies. Sedimentary rocks originate when particles settle out of water or air, or by precipitation of minerals from water. They accumulate in layers. Metamorphic rocks result when existing rocks are changed by heat, pressure, or reactive fluids, such as hot, mineral-laden water. Most rocks are made of minerals containing silicon and oxygen, the most abundant elements in the Earth’s crust.

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