Wegener didn't have an explanation for how continents could move around the planet, but researchers do now: Plate tectonics. We now think that Earth's outer shell is divided into large slabs of ...
(Do not stir!) 4. Push the cotton swab down in the same spot all the way to the bottom of the plate and hold it there. 5 ... Maybe the type of milk will make the colors move differently. Why did the ...