German meteorologist proposed a theory that about 200 million years ago the contients were once one large landmas.
2. As a substance like water is heated the less dense parliclesise while donser particles in Once the hot less dense particles cool down they sink, and the other less dense particles the rise

3. The largest geographic association who criticized the idea of Alfred Wegener

4. Richard O'Connell and examined the extremes to determine whether plate tectonics would be more less likely on different-sized rocky worlds. Focusing on "super Earth's planets
5. As an oceanic crust moves away from the divergent boundary, it becomes denser than the newer oceanic crust. As the older seafloor sinks, the welght of the uplified ridge pushes the oceanic crust toward the french at the subduction zone.
6. A device that bounces sound waves off underwater objects and then records the echoes of the sound waves.
7. She said that "Plate tectonics are essential to life as we know it
8. He found proof of accepting the concept of continental drift. He proposed the idea of seafoor spreading
9. is the other possible process involved in the tectonle plate movement. The weight of the subducting plate pulls the trailing slob into the subduction zone just like a tablecloth slipping of the table and pulling items with it shows that it Earth had been slightly smaller

10. Research astronomers from and less massive, it would not have plate tectonics. And without plate tectonics, life might never have gained a foothold.

11. A British geologist suggested that thermal convection currents in the mantle were the moving the continents. noles explains why continents seemed to drift towards the​