What are the 4 main types of evidence for Alfred Wegeners hypothesis of continental drift?
– The coasts of the continents surrounding the Atlantic ocean could, if the continents were moved closer, fit together like a jigsaw puzzle.=> Look at a map – Living animals in widely separated lands are similar. => India and Madacasar have similar mammals, which are quite different from those in Africa, even though it is now near to Madascar. – Fossil plants and animals in India, South Africa, Australia, Antarctica and South America are similar to each other. – There are numerous geological similarities between eastern South America and western Africa. – Apparent Polar Wandering: Paleomagnetism tells us how far from the poles rocks were when they formed, by looking at the angle of their magnetic field. The story told by different continents is contradictory, and can only be explained if we assume the continents have moved over time. – There are ridges in the floors of the main oceans, where upwelling magma is pushing plates apart. Here is a nice drawing I like to show, when explaining
