Bill Nye SFS Video Q

What did Harry Hess discover about the bottom of the Pacific Ocean during World War II?

• Underwater canyons and trenches

• Deep blue sea floor

• Active volcanoes and mountains

• Flat wide sediment

What did oceanographers discover in the Atlantic Ocean in 1953?

• 12,000 mile long mountain range

• Deep blue sea floor

• Mid-Atlantic ridge

• Underwater volcanoes

Tags

NGSS.MS-ESS2-3

How high does the mid-ocean ridge sit above the surrounding sea floor?

• 5,000 meters

• 1,000 meters

• 2,500 meters

• 3,500 meters

What did Harry Hess conclude about the seafloor based on his analysis of core samples and sonar readings?

• It was sinking into the earth

• It was disappearing

• It was spreading apart

• It was getting thicker

Tags

NGSS.MS-ESS2-3

What did Harry Hess name the process of new crust formation on the ocean floor?

• Earth growth

• Crust generation

• Oceanic recycling

• Seafloor spreading

What is the process that recycles the crust of the spreading ocean floor back inside the earth called?

• Erosion

• Subduction

• Deposition

• Sedimentation

Tags

NGSS.MS-ESS2-1

What did Harry Hess appreciate about the generation and recycling of new earth?

• The earth grows continuously

• The earth doesn't change

• The earth gets bigger

• The earth gets smaller

What did the next great discovery reveal about the process of subduction?

• It's not related to seafloor spreading

• It's the only force on earth

• It's limited to the Atlantic Ocean

• It's part of a much larger process

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

What did Harry Hess conclude about the earth's growth based on his discoveries?

• The earth gets smaller

• The earth expands rapidly

• The earth doesn't get any bigger

• The earth grows continuously

What did Harry Hess name the process that recycles the crust of the spreading ocean floor back inside the earth?

• Oceanic recycling

• Earth growth

• Seafloor spreading

• Crust generation

Tags

NGSS.MS-ESS2-1