Continental Drift

What are the two types of crust?

• continental and oceanic
• ocean and basin
• lower and upper
• thick and thin

What drives tectonic plate movement? 

• gravity
• coriolis effect
• convection currents
• the earth's magnetic core

According to Wegener's hypothesis of continental drift, 

• Earth's surface is made up of seven major landmasses
• the continents DO NOT move
• Earth is slowly cooling and shrinking
• the continents were once joined together in a single landmass

What is Pangaea?

• the name of a German scientist
• the name of the super-continent that existed millions of years ago
• another name for continental drift
• the name of an ancient fossil

What type of evidence was NOT used by Alfred Wegener to support his continental drift hypothesis?

• evidence from landforms
• evidence from fossils
• evidence from human remains
• evidence from climate

Most geologists rejected Alfred Wegener's idea of continental drift because...

• it did not agree with their current theory
• Wegener was interested in what Earth was like millions of years ago
• Wegener used several different types of evidence to support his hypothesis
• Wegener could not identify the force that moved the continents

In Seafloor Spreading, molten material rises from the mantle and erupts or flows out 

• along the edges of all the continents
• along mid-ocean ridges
• in the deep ocean trenches
• in the north and south poles

What discovery caused scientists to rethink Wegener's continental drift theory?

• discovery of earthquake activity in California
• discovery of the ring of fire in the Pacific Ocean
• discovery of seafloor spreading in the Atlantic Ocean
• discovery of deep trenches off the coast of South America

Which of the following is evidence that supports continental drift?

• the presence of penguins at both the equator and Antarctica
• fossils of the same plant have been found on several continents
• the presence of glacial features in Antarctica
• the presence of volcanic rock in Antarctica

Investigation of seafloor spreading showed what about the age of the seafloor?

• the oldest seafloor is at the ridge
• youngest seafloor is destroyed at the ridge
• youngest seafloor is farthest from the ridge
• oldest seafloor is farthest from the ridge