INTRODUCTION WHAT IS PLASTIC? PLASTICS ARE “ORGANIC POLYMERS” of high molecular mass. PLASTIC is a “SYNTHETIC MATERIAL” that can be molded when soft and formed into a solid shape. USAGE OF PLASTIC? Due to their relatively low Cost, Easy to Manufacture and resistant to water, Plastics are used in a wide range of out daily …
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INTRODUCTION WHAT IS GLOBAL WARMING As we know, during the DAY TIME, the “SUN’S ENERGY” reaches EARTH and EARTH WARMS. Now during the NIGHT TIME, Earth gives up its stored heat energy to SPACE by RADIANT HEAT TRANSFER. This “Energy Received from SUN equals the Energy transferred to space ” ie -HEAT IN=HEAT OUT This …
DEFINITION POPULATION is defined as “the number of people living together in the same place” For Example:A city’s POPULATION is calculated by the number of people living in that city.These peoples are called “RESIDENTS”. POPULATION is usually determined by a process called “CENSUS” CENSUS is the process of collecting,Analyzing, structuring and publishing of population. If …
WHAT IS A DESERT DESERT’S are large, extremely dry areas of land with few vegetation. DESERT’S receives an average annual rain fall less than 250 mm(25 cm) Approximately “one third of the EARTH’S land surface” is DESERT . TYPES OF DESERT PRIMARLY, There Are 4 Types Of Desert. HOT AND DRY DESERT COLD WINTER DESERT …