Extrusive igneous rock forms from lava on Earth's surface cooling:
Quickly
Slowly
Extrusive igneous rocks have:
Large mineral grains
Small/no mineral grains
Intrusive igneous rocks form from:
Magma inside the Earth
Lava on Earth's surface
Intrusive igneous rocks form when magma cools:
Slowly
Quickly
Intrusive igneous rocks have:
Small mineral grains
Large mineral grains
What are the two types of igneous rocks?
foliated and nonfoliated
intrusive and extrusive
Slowly cooling magma makes what type of mineral grains?
Small
Large
Fast cooling lava forms what type of mineral grains?
Large
Small or non
Which igneous rock is darker in color and has lower silica content?
Basalt
Granite
Which igneous rock is ligher in color and has high silica content?
Basalt
Granite
