Heat coming from the interior of the earth triggers this movement to occur through convection currents inside the mantle. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. Lance Cabo 200i Performance Parts, N'��)�].�u�J�r� Matching Rocks.
There has only been one magnetic north pole and the continents have drifted (figure 7). These recurring events have increased our awareness of the destructive power of natural hazards and the major risks associated with them. The Prestige 2006 Dvdrip Eng Subtitles, Reviews geological evidence supporting the theory that the earth's crust is composed of moving rigid plates In total, half a million people were killed by such natural disasters. Further, we have to be prepared always for the possibility that each new discovery, no matter what science furnishes it, may modify the conclusions we draw. The continents remained fixed and the north magnetic pole moved. Alfred Wegener's continental drift theory has five evidences which have been explained in this video. Where two adjacent convection cells rise to the surface, a continent could break apart with pieces moving in opposite directions. Wegener put together a tremendous amount of evidence that the continents had been joined. The continents moved by centrifugal and tidal forces. Explain how the following pieces of evidence supported the continental drift theory. Alfred Wegener suggested that continental drift occurred as continents cut through the ocean floor, in the same way as this icebreaker plows through sea ice.
Plant Fossils- all these regions were once connected and had similar climates. Seafloor spreading helps explain continental drift in the theory of plate tectonics. Although the evidence for continental drift was extremely strong, scientists rejected the idea because no mechanism for how solid continents could move around on the solid earth was developed. The evidence for continental drift included the fit of the continents the distribution of ancient fossils, rocks, and mountain ranges and the locations of ancient climatic zones.