Enviro 3.03 Cont. Drift Pt 1

What did Alfred Wegener notice about South America and Africa?

• They have the same type of rocks

• They fit together like puzzle pieces

• They have similar climates

• They were once joined and then moved apart

What did Wegener call the supercontinent that he believed existed?

• Pangaea

• Gondwana

• Laurasia

• Eurasia

What evidence did Wegener find to support his continental drift hypothesis?

• Fit of the continents

• Distribution of fossils

• Distribution of rocks and structures

• All of the above

What type of animal fossils were found in South America and South Africa?

• Flying birds

• Swimming reptiles

• Crawling insects

• Walking mammals

What did Wegener conclude about the mountain ranges across the Atlantic Ocean?

• They were formed by erosion

• They are unrelated

• They formed as a single mountain range

• They were created by volcanic activity

What did Wegener assume about climate zones in the ancient past?

• They were the same as today

• They were unknown

• They were completely different

• They were not affected by continental drift

What type of environments are coral reefs and coal swamps found in?

• Cold water

• Tropical and subtropical

• Mountains

• Deserts

What problem did Wegener have with his continental drift hypothesis?

• He did not have the technology to study the continents

• He did not have enough supporters

• He could not find any evidence to support his hypothesis

• He could not explain how the continents could move through the oceans

What is the mechanism for continental drift?

• Plate tectonics and the gravitational effects of the moon

• Volcanic activity found in the inner core

• Earthquakes & Crust convergence

• Mantle convection & seafloor spreading

Pick 3- Which of these are true regarding convection?

• It occurs in the mantle and drives plate tectonics

• It is a form of heat transfer

• It occurs in the outer core and drives plate tectonics

• Warmer material rises then cools and sinks