Intrusive or Extrusive rocks?

Question

Are these rocks intrusive or extrusive:
Basalt
Obsidian
Pumice
Granite

Help please.

Answer 1

Basalt === Extrusive

Obsidian ==Extrusive

Pumice ===Extrusive

Granite==== Intrusive

Answer 2

basalt-exrusive

obsidian-extrusive

pumice-extrusive

granite-Intrusive



Extrusive means its on the surface (on the ground). Intrusive means its below the earth's surface(in the ground) The first 3 are also volcanic rocks, a couple forming in the event of an eruption (obsidian and pumice). Basalt comes from cooled basaltic lava.





Hope that helps

Answer 3

Basalt === Extrusive

Obsidian ==Extrusive

Pumice ===Extrusive

Granite==== Intrusive

Answer 4

No. types of intrusive rocks are granite and extrusive is obsidian, basalt type stuff. Igneous rocks are volcanic.