The Journey of Pangea and the Pioneers of Ocean Mapping

In 1912, Alfred Wegener proposed the theory of continental drift, suggesting that Earth's continents were once a single landmass called Pangea. Initially dismissed, the theory gained traction through the work of Marie Tharp, who mapped the ocean floor and discovered rift-valleys supporting Wegener's ideas. Despite skepticism, her findings were validated by earthquake data and Jacques Cousteau's expeditions, leading to the acceptance of plate tectonics and revolutionizing earth sciences.

What was the name of the single landmass proposed by Alfred Wegener?

• Laurasia

• Gondwana

• Pangea

• Atlantis

Why was Alfred Wegener's theory initially unpopular?

• It was too complex to understand

• It contradicted conventional thinking

• It was not published in a scientific journal

• It lacked scientific evidence

What early experiences influenced Marie Tharp's interest in geology?

• Her travels to Europe

• Her mother's teaching

• Her studies in physics

• Her father's work trips

What method did Bruce Heezen's team use to collect ocean floor data?

• Underwater photography

• Seismic surveys

• Echo sounding

• Satellite imaging

What did Marie Tharp's maps reveal about the ocean floor?

• It was covered in coral reefs

• It was mostly sandy plains

• It had a complex geography with rift valleys

• It was flat and featureless

How did Howard Foster's earthquake data support Tharp's findings?

• It matched the locations of rift valleys

• It showed no correlation

• It contradicted Tharp's maps

• It was unrelated to ocean floor features

What was the reaction of the scientific community to Tharp's findings in 1957?

• Immediate acceptance

• Indifference

• Continued skepticism

• Complete rejection

What did Jacques Cousteau's expedition ultimately prove?

• Tharp's maps were incorrect

• The ocean floor was flat

• Tharp's maps were accurate

• There were no rift valleys

What major scientific concept did Tharp's work help to establish?

• The theory of evolution

• Quantum mechanics

• The Big Bang theory

• Plate tectonics

What was Marie Tharp's legacy in the field of earth sciences?

• She was a renowned oceanographer

• She was a leading physicist

• She was a pioneering cartographer

• She was a famous geologist