Plate Boundaries and Crustal Features

• F

• G

• H

• J

• A
• B
• C
• D

• F
• G
• H
• J

• A
• B
• C
• D

• F
• G
• H
• J

• A
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• D

Which of these best describes what is happening at Location 6?
F Oceanic plate is being created.
G Continent is being destroyed.
H Island is forming.
J Oceanic crust is being destroyed.

• F
• G
• H
• J

The diagram shows a lab setup designed to model convection currents in Earth’s mantle. The Earth process modeled in this investigation is most likely to cause —
A beach erosion
B island arcs
C formation of new ocean floor
D small mountains with frequent earthquakes

• A
• B
• C
• D

The asthenosphere has the property of plasticity, which allows the solid mantle to move like a liquid.Which of the following explains how the crust moves in different directions?
F Radiation
G Convection currents
H Geothermal
J Conduction

• F
• G
• H
• J

The diagram shows how the ocean floor is spreading. The new ocean floor made of molten rock is being formed at a mid-ocean ridge. Which best describes where the molten rock comes from?
A The crust
B Volcanoes under the ocean floor
C Masses of land to either side of the ocean
D The mantle just beneath Earth’s crust

• A
• B
• C
• D