The gradual movement of the Earth's continents that has occurred over hundreds of millions of years.

1925, a translation of German Kontinentalverschiebung, proposed 1912 by German scientist Alfred Wegener (1880-1930); the theory was not widely accepted until after c. 1950.

the movement of continents resulting from the motion of tectonic plates. Read more in the NG Education Encyclopedia

theory that the land mass of the earth was once held as a single continent which has since split into segments which have drifted apart and into the modern configuration of the continents. Proposed by [..]

The theory that horizontal movement of the earth's surface causes slow, relative movements of the continents toward or away from one another.

a geological theory proposed to account for the shape of Earth's surface. It presumes that the present continents were originally one large land mass which broke up and which have drifted to thei [..]

The theory that horizontal movement of the earth's surface causes slow, relative movements of the continents toward or away from one another.

(n) - the idea that continents move over the surface of the Earth

The theory that horizontal movement of the earth's surface causes slow, relative movements of the continents toward or away from one another.

The theory that continents move, drifting apart or together.

the theory that the Earth’s continents are drifting across the oceans. Control

states that the continents once formed a single land mass, broke up, and drifted to their present locations. continental glacier

plate tectonic movement of continents about the globe

Horizontal movement of continents located in plates moving via sea-floor spreading

A theory presented by German scientist, Alfred Wegener in 1912. Using corresponding floral and faunal fossils, corresponding shapes of the east continental shelf of South America and the west continental shelf of Africa, and distinct geological features that crossed continental boundaries, Wegener proposed the continents had once been assembled in [..]

 

A hypothesis proposed by Alfred Wegener suggesting that the continents are not stationary, but have 'drifted' through time. Plate tectonics is the name for the theory that provided the evidence necessary to support Wegener's hypothesis. more details...

Continental drift refers to the movement of the continents over the surface of the globe through geological time. As the animation shows, the positions of the main continents since the Permian have be [..]

The slow movement of large sections of the Earth’s crust that accounts for the present positions of the continents and seas; also known as “tectonic-plate movement.”

A term applied to early theories supporting the possibility that the continents are in motion over the Earth's surface. [Scientific American. v 266, 84, 1992.] [Scientific American. v 264, 66, 19 [..]

The slow movement of continents which are parts of gigantic plates, across the face of the globe.

 The theory that the Earth's land mass was once held as a single continent, which has subsequently split and drifted into the modern configuration of the continents.

Theory that suggests that the Earth's crust is composed of several continental plates that have the ability to move. First proposed by A. Snider in 1858 and developed by F.B. Taylor (1908) and Al [..]