Question

difference between volcanic rocks and plutonic rocks.

Answer 1

plutonic rocks are rocks formed when magma cools and solidifies below the earth surface
while
volcanic rocks are rocks formed when lava cools down &solidifies on the earth surface

Answer 2

Answer:

Extrusive or volcanic rocks:

These rocks are formed when magma breaks through the crust and reaches the surface of the earth (where it is called lava). It cools rapidly and solidifies to form rocks. The common rocks formed in this manner are basalt and obsidian.

Instrusive or plutonic rocks:

These rocks are formed when magma fails to break through the crust and cools slowly under the crust  forming rocks. Because of slow cooling it solidifies into rocks with large grains of crystals. The common eg of rocks formed in this manner are granite and dolerite.

I Hope this will help uh ! :)