The Theory of Plate Tectonics

Earth's plates meet at....

Plates come together at what type of boundary?

Most divergent boundaries occur here, where new crust is added during sea-floor spreading.

Plates slip past each other at what type of boundary?

When two continental plates collide, huge mountain ranges can form.

Theory that Earth's plates are in constant motion, driven by convection currents in the mantle.

Earth's plates are always moving.

The San Andreas Fault is an example of what type of boundary?

Continental Crust is denser than Oceanic Crust.

Earthquakes often occur when plates move away from each other.

This forms when plates diverge on land.

What type of boundary is represented in the picture?

These type of currents in the Earth's mantle drive plate movement.

Breaks in the Earth's crust where rocks have slipped past each other are called...

What feature forms at convergent boundaries?

In 30 million years from now, it might take an hour longer to fly from New York to London. Why?

During subduction, gravity pulls less denser plates down into the Earth' mantle.

Plates move apart from each other, at what type of boundary?

The motion of the Earth's plates are fast and constant.

What happens when two plates collide?