Intrusive igneous rocks have:
Small mineral grains
Large mineral grains
Intrusive igneous rocks form from:
Magma inside the Earth
Lava on Earth's surface
Slowly cooling magma makes what type of mineral grains?
Small
Large
Intrusive igneous rocks form when magma cools:
Slowly
Quickly
What are the two types of igneous rocks?
foliated and nonfoliated
intrusive and extrusive
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
Extrusive igneous rock forms from lava on Earth's surface cooling:
Slowly
Quickly
Extrusive igneous rocks have:
Large mineral grains
Small/no mineral grains