igneous rock quiz

fire

the latin word for ignis

granite

a course grained intrusive rock often used for buildings and monuments

pumice

a light frothy extrusive rock formed when lava cools so fast that it traps pockets of air inside

rhyolite

an extrusive rock with a composition similar to granite but with smaller crystals

gabbro

dark, coars grained intrusive igneous rock similar to basalt in the mineral make up

extrusive

igneous rocks that form at the surface

intrusive

igneous rocks that form under the surface

lava

molten rock at the surface

magma

molten rock under the surface

fine grained

type of crystal grain that form when moltern rock cools quickly

obsidian

a glasst fine grained extrusive rock

basalt

a hard black extrusive igneous rock that makes shield valcanoes

coarse grained

type of crystal grain that forms when molten rock cools slowly