Continental Drift and Seafloor Spreading

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

• Harry Hess

• Albert Einstein

• Alfred Wegener

• Isaac Newton

According to Wegener, the continents used to be joined together as one supercontinent known as:

• South Africa

• Eurasia

• Pangaea

• Potlopia

Who came up with the theory of seafloor spreading?

• Harry Hess

• Alfred Wegner

• Mrs. Bratton

What are the two types of crust?

• continental and oceanic

• ocean and basin

• lower and upper

• thick and thin

What types of evidence did Wegener use to support the theory of Continental Drift? (Select ALL answer that are correct)

• evidence from land features

• evidence from animal fossils

• evidence from ancient climates

• evidence from plant fossils

• evidence from human remains

What technology did scientists use in the mid-1900s to map the mid-ocean ridge?

• satellites

• submarines

• deep-sea diving

• sonar

Why was Wegener's continental drift hypothesis controversial?

• He didn't have enough evidence

• He was not a trusted scientist

• He died before it was published

• He didn't have a mechanism to explain how the continents moved

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

• Harry Hess

• Galileo

• Alfred Wegener

• Newton

What is this a picture of?

• plate tectonics

• continental drift

• pangaea

• glacier scaring

Which type of information was NOT collected by Wegener to support his continental drift hypothesis?

• glacial deposits

•  fossils

• seafloor magnetic data

• rocks