Theory of Plate Tectonics (ch. 4)

Who was the scientist that developed the theory of Continental Drift?

A divergent boundary is where the plates are

The theory that pieces of Earth’s lithosphere are in a slow constant motion is

Mountain ranges form at which type of boundary?

The San Andreas fault in California is which type of boundary?

What causes changes in the number, shape, and size of Earth’s plates?

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

Which events occur at plate boundaries?

What did Wegner notice when looking at a map of the world?

New oceanic crust is less dense than old oceanic crust because it is

Why was Alfred Wegener's theory originally rejected by scientific peers?

What tool was used to map the Mid Ocean Ridge?

Magnetic stripes near mid-ocean ridges are evidence for sea-floor spreading because

Plate tectonics, or the movement of pieces of Earth's crust, is thought to be caused by

Where does molten material rise from the mantle during sea-floor spreading?

A convergent boundary is where the plates are

Earth's Lithosphere is broken into 

Which convergent boundary creates the highest mountain ranges?

The continents are moving away from each other as magma rises from mid-ocean ridges. This is?

The Earth's continents were once connected in one supercontinent called

When divergent boundaries spread on land they form what?

Where does subduction occur?

Which type of evidence is Wegner NOT use to support his theory of Continental Drift?

A mid-ocean ridge is at what type of boundary?

A transform boundary is where the plates are