Study Guide

Chapter 17 & 18

Know all Vocabulary

Study Homework

Chapter 17

I. Continental Drift

    a. know the theory- Pangaea

    b. Alfred Wegner

    c. Evidence for the theory

    d. Rejected Hypothesis: Why?

II. Seafloor Spreading

    a. know the theory-know figure 17-7 pg. 450

    b. Paleomagnetism

    c. Support for Platectonics

III. Platectonics

    a. know the theory

    b. Plate Boundaries-know figure 17-13 pg. 455-Know descriptions and characteristics

            1-Divergent Boundaries- rift valley and mid-ocean ridges-figure 17-14 pg. 456

            2-Convergent Boundaries-ocean/ocean, ocean/continental and continental to continental-pg. 457 figure 17-15

            3-Transform Boundaries-Faults-pg. 459 figure 17-17

IV. Causes of Plate Motions

    a. Convection-transfer of thermal energy-transfer of energy between Earth's hot interior and its cooler exterior.

    b. Know figure 17-19- Ridge Push and Slab pull

Chapter 18

I. Magma

    a. Factors that affect formation of magma: Temperature, Pressure and Water

    b. Types of Magma-know Table 18-1 pg. 474

    c. Viscosity-definition

II. Intrusive Activity

    a. know diagram figure 18-5 pg. 477

    b. know vocabulary

III. Volcanoes

    a. Yellowstone-Calderas and supervolcano-Movie

    b. Types of Volcanoes:

        1- Shied Volcanoes-characteristics-know diagram-examples

        2- Cinder-Cone Volcanoes-characteristics-know diagram-examples

        3- Composite (stratavolcanoes)-characterisitcs-know diagram-examples

    c. Volcanic Material

            1- Tephra

            2- Pyroclastic flows

    d. Location of Volcanoes:

            1- Convergent Volcanism-Circum-Pacific Belt-Ring of Fire

            2- Divergent Volcanism-ocean ridges

            3- Hot Spots- Hawaiian Islands and Yellowstone Park