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10 Amazing Scientific “Facts of Nature and Space Science” interesting facts for Class 10 and 12 Part 9

Facts of Nature & Space – 9

171. The Andaman and Nicobar Islands in the Bay of Bengal are lashed by rain from November to January and from May to September. The people therefore build their houses on stilts. The area between the stilts is used as a courtyard. The huts are built in a circle with an open space n the centre. Some tribes in the North- Eastern States of India also have their houses on stilts.

172. The Israelites believed that the earth was round and flat and was supported by strong pillars.

173. Man shares the earth with about 3,000,000,000,000,000,000,000,000,000,000,000 other living creatures.

174. Of the total energy radiated by the sun, the earth receives only one part out of the 200,00,00,000 parts.

175. Scientists say that the sun’s temperature is bound to rise one day and fry – or maybe, roast! – everything on earth, but you need not worry. That may take about 800,00,00,000 years.

176. Though we think we are surrounded by water, only 2.5 per cent of the earth’s water supply is fresh (potable) water, the rest is sea water.

177. What we have in the form of river water and lake water constitutes only 0.025 per cent of the entire water supply. The remaining 99.975 per cent is in the form of glaciers and icebergs and below the earth’s crust.

178. The sun is not at all stationary. It completes a revolution around the centre of the Milky Way (our galaxy) once in 225,000,000 years. Since birth, the sun has already completed about 20 revolutions. According to astronomers, the sun will complete another 20 such revolutions. Then it will blow up and shrink.

179. ‘Manna Gum’ is the name of a tree that grows in Australia. A small insect creates sugary scales on the tree. These are collected and used by the aborigines as sweeteners.

180. The heaviest naturally occurring element is uranium.

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