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:
Lava on Earth's surface
Magma inside the Earth
Intrusive igneous rocks form when magma cools:
Quickly
Slowly
Intrusive igneous rocks have:
Large mineral grains
Small mineral grains
What are the two types of igneous rocks?
intrusive and extrusive
foliated and nonfoliated
Slowly cooling magma makes what type of mineral grains?
Large
Small
Fast cooling lava forms what type of mineral grains?
Small or non
Large
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?
Granite
Basalt
