Saturday, January 10, 2009

LAVA FLOW

In volcanoes, lava emerges through a pipe in the top of the mountain. It destroys all the objects come in its way, during the flow of lava. Sometimes, lava also reaches the surface through long cracks in the ground, called fissures. In 1783, lava spilled out of a 32-km long fissure in Iceland and buried 565 square km of land.

Wednesday, January 7, 2009

USE AND MAKE

In industry, people talk of two kinds of manufactures goods. First, consumer goods, such as cloths and washing machines, which are brought by people. Second, capital goods, including machinery and tractors, which are brought by firms and used to produce other goods.