Wednesday, April 3, 2013
Tuesday, April 2, 2013
Why are weapons invented ?
Man’s first tools were stones which he had picked up. He
choose stones that had been worn and sharpened by weather into shapes that
could be used clubs for cutting and scarping.
The right shaped stones were not
easily to find, so in time Man learned to fashion primitive tools to suit his
purposes. These tools were first used just for hunting, and gradually, they
developed into weapons that were deadly to people too.
Prehistoric Man’s tools could be made of bone , tooth, or
more frequently stone, and in particular, flint. At first, these primitive
weapons would be held directly in the hand. Eventually, however, Man learned
how to attach these axe- heads to a wooden shaft, the power of the weapon was
increased. As Man become more experienced in more stone tools, the tools became
more and more advanced in their design.
Arrowheads were a great advance, because they meant that
for the first time, Man could kill his prey or his enemy from a distance
without putting himself at risk.
“Early
man used rocks for tools and weapons, and also to extract minerals. When the
rocks on the surface were used up, he dug shallow pits to get the rocks he
wanted these were the very first mines. Underground mines came later.”
Why the wheel is considered one of Man’s greatest inventions?
The wheel was not invented by one man, or in one country.
It was the result of the ideas of many men in many cultures over a long period
of time. The first primitive wheels were found in the remains of Egyptians,
Assyrians & Babylonians culture.
The wheel is probably the most
mechanical invention of all time. The first primitive wheels were found in the
remains of Assyrian, Babylonian, and Egyptian cultures. The wheel is probably
the most important mechanical invention of all time. The key aspect of a wheel
is that it made the invention of many other objects easy- and it also made it
very easy to move larger objects. Nearly every machine built since the
beginning of the industrial Revolution involves the use of the wheel, from tiny
watch gears to computer disks.
Why was the discovery of fire an important milestone?
Fire occurs naturally in nature
quite often- when volcanoes erupt, or lightning strikes or the sun’s rays make
dry grasses burst into flames. Man probably discovered by accident that fire
could actually be made. Perhaps he took a burning stick from a forest fire and
kept the flames going by adding more sticks or maybe be, those early
tool-makers noticed that the rocks they chipped sent out sparks that could
start fires. In any case, Man discovered that fire could completely change his
way of life. Early man made fire either by striking stones, or by rubbing
pieces of wood together.
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