explain briefly about 3 types of rock
Answers
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. ... Limestone is one of the most widespread sedimentary rocks.
Answer:
the types are:
Explanation:
Igneous rocks
the term igneous rocks comes from the greek term 'ignis' which means fire.
they are formed by cooling and hardening of the earth material.
these rocks do not have layers.
they are also known as primary rock's as they were the first to be formed.
they are divided into two types
extrusive igneous rocks
intrusive igneous rocks
Sedimentary rocks
They are found in layers.they are known as stratified rocks.
most of these rocks contain fossils which are in the form of prints of leaves,insects,etc.
they do not have any type of crystals.
they are prone to weathering as they are soft.
they hold all reserves of coal,oil and natural gas.
Metamorphic rocks
They are very hard and have a close bonded structure.
They are formed when igneous rocks or sedimentary rocks are transformed by the action of intense heat and pressure
The formation of metamorphic rocks takes place over a long period of time.
Materials like gold and silver are found in metamorphic rocks.