Plate Tectonics

The presence of the same ________ on several continents supports the idea of continental drift.

• rocks
• fossils
• both fossils and rocks
• neither fossils nor rocks

A lack of evidence for continental drift prevented many scientists from believing a single supercontinent called _________ existed.

• Glossopteris
• Pangaea
• Gondwanaland
• Mesosaurus

Many scientists think hot plastic-like rock in the mantle is forced upward toward the surface, cools, and sinks.  This process is called a(n) _________.

• earthquake
• convergent boundary
• volcano
• convection current

_______ are formed when two continental plates collide.

• Mountain ranges
• Transform faults
• Rift valleys
• Volcanoes

The theory of continental drift was first proposed by __________.

• Thomas Edison
• Alfred Wegener
• Benjamin Franklin
• Harry Hess

The layer of caramel-like consistency that flows and moves the plates of the Earth is called the ________.

• mantle
• lithosphere
• crust
• asthenosphere

Plates move apart at _________ boundaries.

• volcanic
• divergent
• convergent
• transform

The San Andreas Fault in California is an example of a ________.

• divergent boundary
• convergent boundary
• transform fault
• subduction zone

Which type of plate boundary occurs at B?

• convergent
• divergent
• transform
• country

The feature labeled C represents some of the deepest spots on the ocean floor. These areas are called ___.

• mid-ocean ridge
• trenches
• deep-sea vent
• abyssal plain