Continental Drift + Seafloor Spreading Review

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

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

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

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

An ocean with very few trenches will probably _______________

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

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

Where does subduction occur?

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

Which process changes the size and shape of the ocean?

Where does sea-floor spreading occur?

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

"Pillow Lava" or rocks shaped like pillows form only when molten material hardens __________

As the older oceanic crust cools, it becomes what?

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

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

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

A deep-ocean trench is an underwater ____________

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

What country was Alfred Wegener from?

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

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

An ocean surrounded by many trenches may ____________

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

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