Exploring Bill Nye's Discoveries in Plate Tectonics

To begin can you list ALL of the 7 continents that exist on Earth? Make a list below.

Answer explanation

Australia

North America

South America

Africa

Asia

Europe

Antarctica

Can you name Earth's 4 main oceans?

Answer explanation

4 main Oceans:

Pacific Ocean

Atlantic Ocean

Indian Ocean

Artic Ocean

(newest ocean - Southern Ocean)

Which 2 continents seem to fit together like jigsaw puzzle and were obvious to lots of scientists?

• North America

• Africa

• Australia

• South America

What inspired Alfred Wegener to propose the theory of continental drift?

• Measurements of the Earth's magnetic field

• The discovery of underwater volcanoes

• Identical fossils found on distant continents

• The invention of sonar technology

What was the main reason Wegener's theory of continental drift was initially rejected?

• Wegener was not a geologist

• Lack of evidence for a mechanism

• The theory contradicted religious beliefs

• It was considered too radical

What significant discovery did Harry Hess make during World War II?

• Underwater mountain ranges

• Seafloor spreading

• The Mid-Atlantic Ridge

• Subduction zones

When Harry Hess proposed his "seafloor spreading" idea, he had observed that the ​ (a)   rocks were at the top of the ridge, while the ​ (b)   rocks were farther away from the ridge.

• youngest
• oldest
• same age

What did the discovery of the Mid-Atlantic Ridge contribute to geology?

• It confirmed the Earth was flat

• It showed the Earth was expanding

• It provided evidence for seafloor spreading

• It disproved continental drift

How did Harry Hess explain the creation of new seafloor?

• By meteorite impacts

• Through large earthquakes

• By molten rock rising at mid-ocean ridges

• Through volcanic eruptions

What is the process called that recycles the ocean floor back into the Earth's mantle?

• Erosion

• Subduction

• Condensation

• Deposition