Continental Drift

Which type of plate is older?

• continental
• oceanic

What type of plate is thicker?

• continental 
• oceanic

What is it called when two oceanic plates move apart and new crust is formed?

• crustal integrating
• sea-floor spreading

What is it called when on plate is pushed usder another plate as they collide?

• earthquakes
• subduction

What is one phenomenon when two continental plates collide?

• fold mountains
• vocanoes

What do plates float on?

• corona
• upper mantle
• asthenospere

New crust is created by _____________________?

• magma from the mantle
• corma from the core

What is the name of the supercontinent that formed from about 200-100  million years ago?

• Pangaea
• Laurasia

Who first proposed the theory of continental drift'?

• Galileo
• Wegener
• Hess

What is an underwater mountain range where new ocean floor is made?

• subduction
• mid-ocean ridge
• deep-sea trench