Pre-history :: essays research papers

Pre-HistoryAnthropologists Anthropologists study the skeletal remains of prehistoric life. Two examples of far-famedanthropologists are Mary Leaky and Donald Johanson. Donald Johanson was the anthropologist whodiscover Lucy. Lucyis the first known sign on of humanity. The technical name for Lucy isAustralopithecus. The odd thing about Lucy is that she was both sophisticated and pre-historic, having armslonger that her legs, and being bipedal was a strange compounding for a creature said to be three millionlong time old. Anthropologists study all over the world, but Lucy was found in Africa. radiocarbon Dating Radio Carbon dating is a dating mode in which the do of carbon14 in anobject is measured. The bodies carbons start to decay at death so they measure how old something is bymeasuring its amount of carbon. thither are two major problems with this method though. 1) The standard can only date back about 100,000 years. 2) If the original amount of carbon was distorted forany r eason that will mess up the date given. For those reasons scientists developed other methods thathelp date things more accurately. These methods acknowledge the stardust theory and the river delta theory. cover term Glaciers large, slowly moving masses of blow and ice. Each of the four cold weather periodslasted from 10,000 to 50,000 years ago. The Ice Age. Scientists opine that the age we live in startedafter the 4th period Ice Age sone25,000 years ago. Today 1/2 the earth is cover in ice. During thethird period 1/3 of the world was covered in ice. The ice age made animals either migrate or disappearentirely. (Saber Tooth Tiger, Woolly Mammoth) It also shaped the continents we live on today. Therewere also land bridges in the Ice age.Paleolithic Age Paleolithic means old stone we called it the stone age. 1974 Ethiopia Donald Johansona wholesome known anthropologist discovered female skeletal remains that might submit been as old as 3 millionyears. Cro-Magnon People When neande rs disappeared orbits appeared in Europe. Better tools and weaponswere made, the 1st spear and paintings were made in this age.