Ch14 L 1 The Continental Drift Hypothesis

What was the name of the supercontinent proposed by Alfred Wegener?

• Pangaea

• Eurasia

• Gondwana

• Laurasia

What did Wegener propose as the hypothesis for the motion of continents?

• Continental Drift

• Subduction

• Seafloor Spreading

• Plate Tectonics

Which plant's fossils were discovered on several continents that are now separated by oceans?

• Redwood

• Fern

• Cactus

• Glossopteris

What type of climate evidence supported continental drift?

• Temperate

• Tropical

• Polar

• Desert

What type of rocks were found to be identical in chemistry and age on different continents?

• Sedimentary

• Igneous

• Metamorphic

• Volcanic

Which mountain chains were composed of similar rock types and would meet if North America and Europe were placed next to each other?

• Andes and Rockies

• Himalayas and Alps

• Caledonian and Appalachian

• Ural and Zagros

Why were scientists skeptical of Wegener's hypothesis of continental drift?

• Lack of evidence

• Seafloor discovery tools

• Fast movement of continents

• Solid mantle under continents

What was the main reason Wegener could not explain the forces causing continents to move?

• Gravity

• Magnetic field

• Seafloor spreading

• Mantle composition

What was the missing evidence that Wegener needed to prove continental drift?

• Climate change

• Rock formations

• Seafloor data

• Fossil records

What was the main challenge in measuring the speed of continental drift according to Wegener?

• Ocean currents

• Wind patterns

• Tectonic plates

• Lack of technology