Oceanography CW- Seafloor mapping

______________ began working on a theory of continental drift in: 

• Alfred Wegener

• Carl Linnaeus 

• Marie Curie 

• Rolf Maximilian Sievert

The theory of continental drift proposes that:

• The Earth's landmasses have always been separated

• The Earth's landmasses has never been moved apart

• The Earth's landmasses were once joined together into a supercontinent

• The Earth's landmasses are slowly moving closer together

Wegener's evidence for continental drift included:

• The shape of the continents

• Fossils of plants and animals

• Patterns of glaciation and sediments

• All of the above

People became interested in the similarity of the shapes of continents on either side of the...................

• Atlantic Ocean

• Pacific Ocean

• Indian Ocean

• Arctic Ocean

Fossil patterns occur in linked bands, and included animals and plants that:

• Could easily cross open oceans 

• Could not easily cross open oceans

• Were only found on one continent

• Were only found on one side of the Atlantic

Fossils collected on different continents more than about 150 million years old:

• Were very different 

• Were not found

• Were very similar

• Were only found in the Northern Hemisphere

Fossils less than about 150 million years old:

• Showed very similar forms in different places

• Showed very different forms in different places

• Were not found

• Were only found in the Southern Hemisphere

The pattern of glacial scratches and matching glacial sediments on continents indicates that:

• They were once joined together  

• They were always separate 

• They are slowly moving closer together 

• None of the above

Mountain ranges of similar ages and physical and chemical structure can also be recognized: 

• In the Southern Hemisphere 

• In the Northern Hemisphere 

• Only in Europe 

• Only in North America

One major problem with Wegener's idea being accepted was that: 

• He had no mechanism to explain how continents could move  

• He had no evidence

• He was not a scientist

• He was not a geologist