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Continental Drift Hypotheses Quiz

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Questions and Answers

According to Frank B. Taylor, what caused the movement of continents?

Volcanic eruptions

Tides (correct)

Earthquakes

Meteor strikes

What was the flaw in Alfred Wegener's 'Continental Drift' theory?

Failure to explain the role of earthquake activity

Unexplained reason for continents being connected now (correct)

Lack of evidence for the supercontinent Pangea

Inability to account for the existence of mountain ranges

According to Arthur Holmes, what is the main driving force behind the movement of tectonic plates?

Magnetic fields

Solar radiation

Convection currents (correct)

Gravitational pull

What technological advancement resulting from World War II was later used to determine water depths?

Sonar Signup and view all the answers

Harold Hess is credited with the discovery of which oceanic feature?

Guyots or Seamounts Signup and view all the answers

What did the discovery of seafloor spreading by Harold Hess and Robert S. Dietz demonstrate?

Magma erupts onto the seafloor, pushing two plates in opposite directions to create new oceanic crust Signup and view all the answers

What did Tuzo Wilson propose in relation to hotspots in the mantle?

Tectonic plates move over fixed hotspots, creating volcanoes that ultimately erode and form guyots Signup and view all the answers

How do hotspot tracks contribute to understanding tectonic plate movements?

They record the direction and velocity of moving tectonic plates through the formation of guyots Signup and view all the answers

What is the significance of the magnetic polarity stripes found in basalts at mid oceanic ridges?

They confirm the theory of seafloor spreading by showing the direction of moving tectonic plates Signup and view all the answers

What is the role of transform margins according to Tuzo Wilson's description?

Transform margins connect subduction zones and mid ocean offset ridges in a third type of plate boundary Signup and view all the answers