At divergent boundaries, plates move away from each other and form mid-ocean ridges or major rift zones, and at strike-slip boundaries plates slide past each other.

The Earth's plates jostle about in fits and starts that are punctuated with earthquakes and volcanic eruptions. 4 min read There are a few handfuls of major plates and dozens of smaller, or minor ...

New crust is continually being pushed away from divergent boundaries (where sea-floor spreading occurs), increasing Earth's surface. But the Earth isn't getting any bigger. What happens, then, to ...

Build mountains. Trigger volcanoes. Create new sea floor. You now have the power to change the landscape with the slightest push of your mouse. Four types of plate tectonic activity are ...