Drift

What is this a picture of?

• plate tectonics
• continental drift
• Pangaea
• glacial scarring

This is a picture of glacial scars found in Africa.  What are these evidence for?

• Africa has always been near the equator.
• Africa was once in an area of the Earth that had a very cold climate.
• The continents have not moved.
• sea floor spreading

What does the theory of continental drift state?

• The continents were once joined in a super-continent and have moved over time.
• Continents are stationary and do not move.
• The Earth is broken into lithospheric plates that move due to convection currents.
• none of the above

What evidence did Wegener use in his theory?

• continents fit together like puzzle pieces and similar fossils in widely-spread areas
• glacial scars and evidence from ancient climates
• mountain ranges and coal deposits line up across continents
• all of the above

What is one of the first pieces of data that Wegener collected that led him to believe that the continents had moved? 

• He discovered the mid-ocean ridge.
• He found convection currents that caused plate movement.
• He discovered that Greenland's longitude had not always been the same.
• He found that Africa and South America were connected.

What two specific continents fit together most noticeably?

• Africa and North America
• South America and Europe
• South America and Africa
• Antartica and Africa

What technology did Wegner use in his study of Greenland?

• GPS
• Sonar
• Radar
• Maps

How long ago is Pangaea believed to have existed? 

• 200-300 million years ago
• 1000-2000 years ago
• 10,000-20,000 years ago
• 20-30 billion years ago

Why did no one believe Wegener's thoery?

• He could not explain HOW the continents moved.
• He didn't have evidence.
• His data was wrong.
• He didn't use the right technology to gather data.

Who is the person credited with developing the theory of continental drift?

• Harry Hess
• Galileo
• Alfred Wegener
• Newton