The theory explains that as the sea floor spreads, the tectonic plates are pushed and pulled in different directions.

VOA: special.2011.01.04

The plates float about slowly, sometimes crashing into each other, and sometimes moving away from each other.

VOA: special.2010.01.12

Many of the world's volcanoes are found at the edges of plates, where geologic activity is intense.

VOA: special.2010.01.12

The scientists suggest that this causes a reduction in pressure on the land where the plates meet.

VOA: special.2009.07.07

Volcanoes also are found in the middle of plates, where there is a well of melted rock.

VOA: special.2010.01.12

We slept on the hard ground, ate canned beans from cold metal plates and spent our days in the difficult search for gold.

VOA: special.2009.07.04

If you have ever visited, you might have noticed the popular license plates on many D.C.cars.

VOA: special.2009.03.20

It is along or near this fault line that most of California's earthquakes take place, as the two tectonic plates move in different directions.

VOA: special.2011.01.04

Severe breaks may require an operation to hold the bone together with metal plates and screws.

VOA: special.2009.02.04

However,the Land of Ten Thousand Lakes is written on Minnesota's vehicle license plates.

VOA: special.2011.01.09

However,"The Land of Ten Thousand Lakes" is written on Minnesota's vehicle license plates.

VOA: special.2009.08.09

She even put her hands in our plates and ate our food.

VOA: special.2009.11.08

This same area is also where two major tectonic plates meet.

VOA: special.2009.07.07

As many as twenty tectonic plates cover the Earth's surface.

VOA: special.2009.07.07

When the plates move, the continents move with them.

VOA: special.2010.01.12