Chapter 3 Objectives

• Describe the thickness, composition, and condition of Earth’s three major internal layers.
• Outline the theory of plate tectonics, define the three types of plate boundaries, and list the landforms and geologic activities associated with each boundary type.
• Compare and contrast the appearance and behavior of cinder cones and shield and composite volcanoes.
• Diagram the rock cycle and describe how rocks are transformed from one type to another.
• Describe the composition and formation of soil.