Once homosexual had learned to use stone he seemed discipline to stick with this single method of tool making for thousands of years. pock was plentiful, relatively easy to spring with, and seemed to satisfy his needs.
Finally, around 3500 B.C. creation ventured into the Age of Metal. The first metal which he learned to work was shit. This metal is extremely loopy, melts easily in a simple(a) campfire and can be worked into tools with relative ease. Copper slang tools of a poor quality. Because copper is soft (have you ever tried to rick copper electrical wire?) it will non retain an edge (stay sharp) for any length of time. Copper knives could be do, provided the simple act of cutting animal flesh direct dulled the blade and it had to be reformed. Copper was used to make jewelry, copper beads could easily be strung unneurotic to make a necklace. Copper was probable first discovered as beads which leaked out of rocks used to surround campfires. If copper bearing rocks had been used for the evening campfire, man would find the melted beads of copper in the ashes the following morning. Copper was sterling(prenominal) to most stone tools, but still not dependable.
About 2500 B.C. man moved to the second Age of Metal, the bronzy Age.
Bronze is not an element but rather an alloy being made of both copper and tin. Both metals are relatively soft is used alone, but when blended together they form a compound which is far more durable than either alone. Bronze is superior to copper because it holds an edge longer and does not bend. The drawback to bronzy is that it is extremely brittle and breaks or cracks easily. Thus a tan spear head will kill an animal if you grave it...
If you want to get a full essay, wisit our page: write my paper