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What is the difference between intrusive and extrusive rock

2 Answers

5 votes

Answer:

The major visible difference between the two are crystal size, intrusive rocks have a larger crystal/grain texture due to the slow cooling of magma below the earth surface which encourages the growth of larger crystals, while extrusive rocks, because of the rapid cooling at/above the earth's surface does the opposite.

Step-by-step explanation:

it's sample

User NotAChance
by
8.8k points
5 votes
Extrusive rocks cool very fast, while intrusive rocks cool very slowly.
User Cotopaxi
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