Name:Alvaro Abascal Form:8ºA Asignature: English

The marbles are small, round, and spherical. This object are made from glass or stone and most commonly are used in children's games. Usually are decorated with brightly colours. The marble appears thousand of years ago, and it is also believed that the primitive games played with marbles eventually evolved into the sports that we now know as bowling, billiards, and pinball. Marbles have numerous industrial uses as well they are the noise inside a can of spray paint, Marbles are also melted down to make fiberglass, used in automotive bodies and draperies.

Materials: soda lime, sand, glass with iron oxide, uranium oxide, 1.Sand, soda lime, and crushed cullet are fed into a large, furnace-driven tank. 2.In the tank, the mixture is heated to 1260°C to melt the raw materials, This can take as long as 28 hours. 3. Next, the molten mixture moves out of the tank through an opening into another vat known as the flow tank. 4. Here, in the tank, injects molten colored glass. This hot, pigmented glass gives the marbles their distinct appearance

5. Next, the still-molten glass is released from the flow tank as globs of glass. 6. The globs travel down metal ramps that simultaneously cool them and perfect their spherical shape. 7. After that, the marbles travels down a second metal slide and in this place are classified by hand.

we can conclude that the marbles have been stay millions of years ago on earth and have been employed to play, work, etc.. also used to recycle glass bottles, old marbles, etc.. But we can also say that in the process contaminate a little because in the process drope some toxic gases and water gases.