Lesson: Types of RockChemistry
In this lesson, we will learn how to identify igneous, sedimentary, and metamorphic rocks and describe their composition and physical properties.
Sample Question Videos
A rock is formed from magma that cooled slowly to form large crystals without penetrating the Earth’s surface. Which type of rock is it?
A rock is formed from magma that penetrated the Earth’s crust as lava and cooled quickly to produce small crystals. Which type of rock is it?
A rock has been heated under high pressure, deep beneath the surface of Earth. It is extremely hard. Which type of rock is it?