8.9ABC Forces that Change the Earth Test Review

In 1912 German scientist Alfred Wegener proposed the theory of continental drift. Wegener's

theory that Earth's tectonic plates are in a state of constant motion, having once been connected to for one big supercontinent, called Pangea. What forms of evidence below did Alfred Wegener use to support his theory of Continental Drift? Select THREE correct answers.

• F. Coastlines of multiple continents seemed to be able to fit together

• G. Matching glacial deposits and rock formations were found on multiple continents

• H. Evidence of land bridges connecting multiple continents was discovered

• J. Matching plant and animal fossils were found on multiple continents

• K. Evidence existed that the coastlines of multiple continents were eroding at the same rate

Which location is near a transform plate boundary?

• A. Location A

• B. Location B

• C. Location C

• D. Location D

Which type of boundary results in the spreading of the oceanic ridge?

• A. Convergent boundary

• B. Subduction boundary

• C. Transform boundary

• D. Divergent boundary

Which type of boundary results in the formation of ridges and rifts?

• A. Convergent boundary

• B. Subduction boundary

• C. Transform boundary

• D. Divergent boundary

Which type of boundary results in the formation of faults, which cause earthquakes?

• A. Convergent boundary

• B. Subduction boundary

• C. Transform boundary

• D. Divergent boundary

Which type of boundary results in the formation of coastal volcanoes?

• A. Oceanic/Oceanic Convergent Boundaries

• B. Oceanic/Continental Convergent Boundaries

• C. Continental/Continental Convergent Boundaries

• D. Divergent boundary

Which type of boundary results in the formation of volcanic islands?

• A. Oceanic/Oceanic Convergent Boundaries

• B. Oceanic/Continental Convergent Boundaries

• C. Continental/Continental Convergent Boundaries

• D. Divergent boundary

The Mid-Atlantic ridge is located at the boundary of two tectonic plates. Which diagram correctly models the relative plate motion on each side of a mid ocean ridge?

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The San Andreas fault is a transform fault. The map below shows a student's approximation of where the fault line crosses through the United States. Students were asked to make maps predicting which way land would most likely move over thousands of years.

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One piece of evidence that supports the Theory of Plate Tectonics is found in the observation of rocks on either side of the Mid-Atlantic Ridge, shown in the picture provided. Plate Tectonic theory is supported because as you move out form the Mid-Atlantic Ridge, the rocks -

• have higher iron content.

• become thicker and thicker.

• are increasingly older.

• are made of smaller particles.