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Date
Section 17.4 Causes of Plate Motions
Main Idea
Mantle
Convection
Use with page 461.
Use with page 463.
(continued)
Details
Create a diagram to illustrate the following features. Use Figure
17-19 to help you.
• divergent plate
• convection current • crust
boundary
• convergent plate
• asthenosphere
• ridge push
boundary
• upper mantle
• lithosphere
• slab pull
• trench
Identify unanswered questions that scientists still have about
convection currents and plate tectonics.
A NALOGY
Draw a connection between heating soup on the stove and
convection currents in the Earth.
Plate Tectonics
199