01552     2200205   4500001002100000005001500021035002000036008004100056245000800097100001900105260003200124300002200156020001800178084001800196520107800214082001201292650002301304650000801327990001101335INLIS00000000000110120211201100415  a0010-0621000701211201                           0      1 aGas1 aJackman, Wayue  aItaly :bWayland Ltd,c1992  a32 hlm. ;c26 cm.  a1-56847-049-5  aR.333.8 JAC g  aGAS This colorfully illustrated series introduces the world s most important resources. In easy-to-read chapters each book shows how a raw material is obtained and processed to make the products people use every day. Plus, fun-to-do projects enable you to learn about these materials firsthand.GASMillions and millions of years ago, even before there were dinosaurs, gas began to form out of rotted plants in swamps. Today, this gas is one of our most essential resources.You ll learn about the amazing process that created huge pockets of gas below the earth s surface, You ll join geologists searching for gas and learn how it is brought to the surface by giant pumps called Christmas trees. Then, you ll examine gigantic refineries-as large as a small city-that clean the gas and add its distinctive smell. Through words and photographs you will explore the story behind finding, refining, and using gas. Plus hands-on projects enable you to experiment with the properties of gases.Books in the seriesBRICKS *ELECTRICITY* GASGLASS OIL PAPER PLASTICSSTEEL WATER WOOD iwn.  aR.333.8 4aSumber Penghasilan 4aGas  a017821