EVERYDAY SCIENCE

SCIENCE

EARTH SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Two ways to describe igneous rocks are ____
A
Intrusive and Extrusive
B
Gray and White
C
Foliated and Non-Foliated
D
Clastic and Biochemical
Explanation: 

Detailed explanation-1: -Intrusive rocks have a coarse grained texture. Extrusive Igneous Rocks: Extrusive, or volcanic, igneous rock is produced when magma exits and cools above (or very near) the Earth’s surface. These are the rocks that form at erupting volcanoes and oozing fissures.

Detailed explanation-2: -The two main categories of igneous rocks are extrusive and intrusive. Extrusive rocks are formed on the surface of the Earth from lava, which is magma that has emerged from underground. Intrusive rocks are formed from magma that cools and solidifies within the crust of the planet.

Detailed explanation-3: -Intrusive igneous rocks are rocks that crystallize below the earth’s surface resulting in large crystals as the cooling takes place slowly. Diorite, granite, and pegmatite are examples of intrusive igneous rocks.

Detailed explanation-4: -Intrusive igneous rocks cool from magma slowly in the crust. They have large crystals. Extrusive igneous rocks cool from lava rapidly at the surface. They have small crystals. Texture reflects how an igneous rock formed. 10-Oct-2022

Detailed explanation-5: -Intrusive (plutonic) rocks. Extrusive (volcanic) rocks. 25-Oct-2022

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