Plate Tectonics

As the mantle heats up, it rises and pushes cooler material down to heat up again. This is:

A convergent boundary between two plates can form

Which of these is NOT a type of plate boundary?

Alfred Wegener's continental drift hypothesis suggested that

The continent of South America sits on the

When two plates move away from each other they form a

The lithosphere is divided into pieces called

The boundary between the South American plate and the Nazca plate formed

What is the name of the single landmass which split into the continents millions of years ago?

In the mid-twentieth century, scientists examined Wegener's hypothesis again when they found

What evidence led Wegener to develop his hypothesis?

When two plates move horizontally past each other they form a

Name an example of a transform boundary between two plates:

Which regions of tectonic plates are the most dense?

When one plate pushes under another, the leading edge of that plate sinks down faster. This is:

Scientists consider this tectonic motion to be the most important. It is also the fastest.

When two plates collide into each other they form a

Which tectonic plate is submerged entirely underwater?

The outermost, rigid layer of Earth is called the

A divergent boundary between tectonics plates can form

Alfred Wegener's hypothesis of continental drift

Rocks formed at mid-oceanic ridges push high and cool but move away as new rock rises. This is:

Which regions of tectonic plates are the thickest?

The boundary between two tectonic plates can be found

What causes tectonic plates to move?