CK-12 Foundation
Ck 12: Earth Science: Mechanical Weathering
[Free Registration/Login may be required to access all resource tools.] Describes various types of mechanical weathering.
PBS
Pbs Learning Media: Volcanism
Volcanoes are one of the most dynamic, powerful, and visible forces on Earth. This interactive resource adapted from the National Park Service uses images to describe different types and parts of volcanoes, volcanic rocks, magma, and...