Chapter 18 - Volcanic Activity
Chapter 4 Rocks: Mineral Mixtures. Section 1: Understanding Rock The Earth’s crust is made up mostly of rock Rock – is simply a solid mixture of crystals.
Objectives Describe factors that affect the formation of magma. Magma Compare and contrast the different types of magma. –viscosity Vocabulary.
Volcanoes Section 18.1 Types of Volcanoes The appearance of a volcano depends on two factors: the type of material that forms the volcano and the type.
