Seafloor Spreading Review

Front

Where is the youngest seafloor located in the Atlantic Ocean?

Back

Towards the middle of the ocean.

Front

What is the material that rises from the mantle to form new ocean crust?

Back

Magma/lava.

Front

True or False: Seafloor spreading happens at Mid-Ocean Ridges.

Back

True.

Front

What happens to older oceanic crust as new oceanic crust forms?

Back

It moves away from the mid-ocean ridges.

Front

What was Pangea?

Back

A supercontinent believed to have existed millions of years ago.

Front

Which evidence does NOT support the theory of Pangea?

Back

Common sonar tools on different continents.

Front

What geological feature is formed at mid-ocean ridges?

Back

New oceanic crust.

Front

What is the process called when tectonic plates move apart?

Back

Seafloor spreading.

Front

What type of rock is formed from cooled magma?

Back

Igneous rock.

Front

What is the significance of sonar in studying the ocean floor?

Back

It helps map the seafloor and identify mid-ocean ridges.