* A shooting star is a meteor that comes from space,burning out in the earth`s upper atmosphere.
* The total number of star visible with the naked eye can not be more than 6000.
* Star twinkle for two main reasons, The intensity of the stars decreases and increases because of line-of-sight effect and there are disturbance in the gases of the atmosphere.
* One light year is equal to 9461,000 million km ( 5875,000 million miles ).
* The earth is about three million miles closer to the sun in january.
* An engine which could do work equal to lifting 550 pounds one foot per second,is said to work at rate of one horsepower.
* The essential parts of radio are: Vacuum tubes, transistors , Amplifier and Oscillator.
* If you look at sky from the moon,It appears completely black because the moon has no atmosphere.
* Star twinkle for two main reasons, The intensity of the stars decreases and increases because of line-of-sight effect and there are disturbance in the gases of the atmosphere.
* One light year is equal to 9461,000 million km ( 5875,000 million miles ).
* The earth is about three million miles closer to the sun in january.
* An engine which could do work equal to lifting 550 pounds one foot per second,is said to work at rate of one horsepower.
* The essential parts of radio are: Vacuum tubes, transistors , Amplifier and Oscillator.
* If you look at sky from the moon,It appears completely black because the moon has no atmosphere.
* FM stands for Frequency modulation.
* THere is no colour of the sky but it is the blue part of the white light of the sun which gets scattered by the dust particles hanging in the atmosphere.
* Kilowatt hour (kWh) is a bigger unit of energy used in addition to SI unit.
* Mitosis and meiosis are two types of cell division.
* Light travels at a speed of 186,000 miles per sec.
* The volcanoes of HAWAII are the most common and thoroughly studied in the world
* Acre-foot is a unit of volume and is used to measure irrigation water, runoff volume and reservoir capacity.
* Heme is Ferrous Protopo
* There is about 340 million cubic miles of liquid water on the surface of the earth
* Ducts are small tubes which transfer the secretion of glands.
* Borneo, sumatra , kenya ,uganda, brazil , colombia and equadore are some countries through which the equator passes.
* Computer virus has created from pakistan
* The dead sea is the world lowest sea.Its surface is 400 metres below the mediterranean.
* MegaWatt is a unit of power equal to 1000 kiloWatts.
* There are 15 main tectonic plates which makes the dynamic crust of the earth.
* Northern edge of the Atlama desert in Chile is richest with the desposits of copper.
* Dry ice is solid carbon dioxide at a temperature of -80 C.
* Hydro-electric power means production of electricity by making Dams.
* Chronic disease usually begins slowly and persists over a longer time.
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