Stones

** How many kinds of stone do you know? **
There is Three kinds of stones: Igneous, Sedimentary and Metamporphic

** Why are stones used in construction? **
Because of its characteristics and for what its stands (forever)

**2 definitions**: -Rubble: roughly broken stones of any shape bounded in mortar. -Ashlar masonry: is the strongest stonework and most suitable for monumental architecture. -"Because of its weight and the precision with which it can be shaped, stones masonry (in contrast with brick) does not depend on strong bonding for stability (...)" Simplest Modest cheaper better
 * 2 statements of comparison and contrast **
 * -** "Its advantages are durability, adaptability to scultural treatment, (...). But it is difficult to quarry, trasnport, and cut (...)"
 * 2 statements expressing cause and effect **
 * - " ** The entablatures of an ancient Greek temple, for example, were bonded by small bronze dowels. ** But the weight creates problems of stability when loads push at an angle" **
 * -** Many Stones are employed even for roofing. But this requires so many columns that unvaulted masonry buildings are almost always combined with floorrs and covering in wood.
 * 2 adjectives in the superlative form **
 * 2 in the comparative form. **

**__ Paragraph writing __**
In this earth, through time and space, there has been one that has endure everything and seen it all, and that is the Stone. This element, a combination of minerals, has been one of the most sought material by man. Through wind and rain, the __stones__ have shown man their greatest qualities: Durability, Adaptability to sculptured treatment and hardness. It has been told that, because of these advantages, rock rules everything. The Roman Empire thought so, and because they believed that they would stand forever in power, they built their greatest places in Stones. But nothing is perfect; there are also some weaknesses, such as: frailness in tension, difficult to quarry, transport, and cut; and it is expensive. For example, **there are two types** of stonework. The first: Ashlar Masonry, which consists in cutting the stones in rectangular form, needs time, effort, patience and a lot of hands. Egyptians used this type of stonework to build their pyramids. Many died because of the enormous effort **that require the move of the stones**. And the second type, Rubble, that is broken stones bounded in mortar, is a smaller problem,but neither more or less it needs strength and patience. But not matter how expensive or how much effort needs, stone is one of the main construction material that exist, that will continue to use along it is there.

media type="file" key="stones.mp3"