Plate Tectonics III

What is a system of ideas intended to explain something?

• Fossil

• Theory

What term describes continents joined together as a supercontinent?

• Rift valley

• Pangea

What is any trace of an ancient organism that has been preserved in a rock?

• Fossil

• Fault

What is the process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle again?

• Subduction

• Plate tectonics

What term describes Earth's lithosphere broken into pieces separated by cracks?

• Deep-ocean trench

• Plate

What is the idea that continents slowly moved over Earth's surface?

• Sea-floor spreading

• Continental Drift

What occurs when plates come together?

• Convergent boundary

• Transform boundary

What happens when plates move apart or diverge from each other?

• Divergent boundary

• Fault

• Subduction

What is the term for long chains of mountains that rise up from the ocean floor?

• Rift valley

• Mid-ocean ridge

• Deep-ocean trench

What is the term for breaks in Earth's crust where rocks have slipped past each other?

• Fault

• Rift valley

• Transform boundary