The earth was not only cracked but it appeared to be cracked in pieces scientist call these pieces tectonic plates when scientist realized that the earth was broken into plates they finally had enough evidence to explain how it was that continents could move. The theory that explains plate movement is called plate tectonics. To understand more about plate tectonics and continental drift we have to look deep inside the earth the earths interior consist of several different layers the inner core which is believed to be solid iron and very hot, the outer core which Is believed to consist of rocky material so hot that its under such great pressure that it is under liquid state. The mantle which is not as hot as the outer core and not as liquid the mantles outer most portion is solid above that is the outermost layer of the earth the crust. Together the crust and the outer most portion of the mantle form the earths outer shale they are referred to as the
The earth was not only cracked but it appeared to be cracked in pieces scientist call these pieces tectonic plates when scientist realized that the earth was broken into plates they finally had enough evidence to explain how it was that continents could move. The theory that explains plate movement is called plate tectonics. To understand more about plate tectonics and continental drift we have to look deep inside the earth the earths interior consist of several different layers the inner core which is believed to be solid iron and very hot, the outer core which Is believed to consist of rocky material so hot that its under such great pressure that it is under liquid state. The mantle which is not as hot as the outer core and not as liquid the mantles outer most portion is solid above that is the outermost layer of the earth the crust. Together the crust and the outer most portion of the mantle form the earths outer shale they are referred to as the