Explores volcanoes and what causes them to erupt. Discusses lava, pyroclastic materials, and the Ring of Fire. Also weathering and erosion, including processes such as frost wedging, exfoliation and thermal expansion, and chemical weathering.
Provides the most important conceptsand processes in geology, including geologic time, the earth in context, principles, minerals, magmas and intrusive rocks, volcanic rocks,weathering and erosion, sedimentary rocks and more. (105 min.).
