6.1.4 Theory of Plate Tectonics

Earth's plates meet at boundaries.

• True
• False

Breaks in the crust called faults form where plates meet.

• True
• False

Plates slide past each other at convergent boundaries.

• True
• False

A rift valley forms where plates diverge on land.

• True
• False

Ocean currents drive Earth's plate movement.

• True
• False

Most transform boundaries where plates move apart occur along the mid-ocean ridges.

• True
• False

Which theory describes the motion of and force driving Earth's plates?

• first law of motion
• third law of motion
• continental drift
• plate tectonics

What is the motion of Earth's plates like?

• fast and in stages
• slow and in stages
• slow and constant
• fast and constant

The San Andreas fault is an example of which kind of boundary?

• transform
• divergent
• oceanic
• convergent

Which feature forms at convergent boundaries on continental crust?

• mountain range
• trench
• rift valley
• mid-ocean ridge