Continental Drift & Seafloor Spreading

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

• Harry Hess

• Albert Einstein

• Alfred Wegener

• Isaac Newton

Tags

NGSS.HS-ESS1-5

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

• South Africa

• Eurasia

• Pangaea

• Potlopia

Tags

NGSS.MS-LS4-1

Who came up with the theory of seafloor spreading?

• Harry Hess

• Alfred Wegner

• Mrs. Bratton

Tags

NGSS.HS-ESS1-5

What are the two types of crust?

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

Tags

NGSS.MS-ESS2-3

Younger sea floor crust is located...

• farther from the mid-ocean ridges

• at the mid ocean ridges

• near the continents

Tags

NGSS.MS-ESS2-3

What were 2 kinds of evidence were used to prove that the seafloor spread?

• rock formations, WWII shipwrecks

• magnetic seafloor stripes, WWII ship logs

• magnetic seafloor stripes, age of rocks

Tags

NGSS.MS-ESS2-3

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

• satellites

• submarines

• deep-sea diving

• sonar

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

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

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

Why were magnetic patterns found on the ocean floor puzzling?

• They showed alternating bands of normal and reversed polarity.
• No rocks were magnetic.
• They did not show alternating bands of normal and reversed polarity.
• All rocks were magnetic.

Tags

NGSS.HS-ESS1-5