Sea-Floor Spreading

Front

What is Sea-Floor Spreading?

Back

Mid-Ocean ridges continually add new material to the ocean floor.

Front

Mid-Ocean ridges form long chains of "______" that rise up from the ocean floor.

Back

Mountains

Front

In the Mid-1900s, scientists mapped mid-ocean ridges using what?

Back

Sonars

Front

What form the longest mountain ranges on the earth?

Back

Ridges

Front

Subduction

Back

The process by which the ocean floor sinks beneath a deep ocean trench and back into the mantle again.

Front

In a process taking tens of millions of years, part of the ocean floor sinks back into the mantle at deep-ocean trenches.

Back

True

Front

Seafloor spreading is a process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge.

Back

True

Front

Sea floor spreading occurs at the divergent plate boundaries.

Back

True

Front

Seafloor spreading is consistent at all mid-ocean ridges.

Back

False

Front

Seafloor spreading is a geologic process in which type of plates split apart from each other?

Back

Tectonic