Which rocks cool much faster extrusive rocks or intrusive rocks?

Extrusive rocks cool much faster than intrusive rocks. This is because extrusive rocks form from lava that erupts onto the Earth's surface, where it cools quickly in contact with air or water. In contrast, intrusive rocks crystallize from magma that cools slowly beneath the Earth's surface, allowing larger crystals to form. Thus, the cooling rate is significantly faster for extrusive rocks compared to intrusive ones.