Continental Drift + Seafloor Spreading Review

Mid-Ocean Ridges continually add new material to the ocean floor in a process called what?

What is any trace of an ancient organism that has been preserved in rock?

What country was Alfred Wegener from?

Where does sea-floor spreading occur?

What is the name of the underwater mountain ranges that scientists like Marie Tharp discovered?

As the older oceanic crust cools, it becomes what?

Older rock moves ________ from either side of a mid-ocean ridge

What did Wegener name the landmass that was made up of all continents joined together?

Which of the following is NOT evidence of sea floor spreading?

As a continent moves towards the poles, it's climate _____________

Which process changes the size and shape of the ocean?

Alfred Wegener's theory that the continents slowly moved over Earth's surface is known as what?

The pattern of magnetic stripes in rocks on either side of ridge is ______________

True or False: The mid-ocean ridges form the longest mountain ranges on Earth.

Which was NOT a type of evidence that Wegener used to support his theory?

A deep-ocean trench is an underwater ____________

Fill In: Alfred Wegener noticed that certain ______ ranges in Europe and North America match up

The process by which the ocean floor sinks beneath a deep ocean trench is called ___________

Wegener's theory was rejected because he could not identify what?

Eventually the ocean floor plunges into deep underwater canyons we call ____________

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

Where does subduction occur?