6th Ch 7 Lesson 3 Plate Tectonics

Which is an example of a transform plate boundary?

• the Himalayas
• the East African Rift
• the Hawaiian Islands
• the San Andreas Fault

When does a divergent plate boundary form?

• when a denser plate sinks below a more buoyant plate
• when two plates slide past each other
• when two plates separate
• when two plates collide

Which force causes plate motion?

• basal drag
• ridge push
• all of the above
• slab pull

What does the theory of plate tectonics provide?

• an estimate of how quickly the continents move
• an explanation for the occurrence of earthquakes and volcanic eruptions
• a reason for an increase in Earth's surface area
• evidence of the solid, unbroken nature of Earth's crust

Which layer of Earth's surface behaves like plastic?

• asthenosphere
• lithosphere
• crust
• mantle