CCMS: Plate Tectonics

Any trace of an ancient organism that has been preserved in rock is called a _________

Geological theory that states that pieces of Earth's lithosphere are in constant, slow motion

According to Wegener's hypothesis of continental drift......

Most Geologists think that the movement of Earth's plates is caused by .............

Process of _________ continually ads new crust at the ocean floor along mid-ocean ridges.

A collision between 2 pieces of continental crust at a convergent boundary produces a ________

If subduction occurs faster than oceanic crust can be created, an ocean will __________.

In sea-floor spreading, molten material rises from the mantle & erupts ..............

Mid-ocean ridges form the _________ mountain ranges on Earth.

Name the process that occurs at the area labeled C.

At a __________, 2 plates move away from each other.

Wegener provided evidence from landforms, fossils & climate to support his theory of ________

Subduction occurs where the oceanic crust bends down toward the mantle at a(n) ____

A supercontinent that once existed millions of years ago was called.....

When continental plates pull apart at a divergent boundary on land, a(n) ____ forms.

Identify the feature labeled A on the diagram.

What's happening in the area labeled B on the diagram?

Which is evidence for sea-floor spreading.

What technology did scientists use in the mid-1900's to map the mid-ocean ridge?

Which statement best describes the process in the diagram?

A place where 2 plates slip past each other, in opposite direction is called .....

Oceanic crust near the mid-ocean ridge is ______ than oceanic crust farther away from the ridge

The lithosphere is broken into sections called ________ which float on top of the asthenosphere

Hypothesis of ____ ____ is that all land was once joined as a single land mass then moved apart

What happens to new oceanic crust at a mid-ocean ridge?

One piece of evidence causing Wegener to think all continents moved?

Identify the feature labeled C on the diagram.

Old Oceanic crust is more dense than the new oceanic crust because it is .........

What force causes the movement of Earth's tectonic plates?

What happens as a result of the processes modeled by this diagram?