Originally, it was thought that the centre of the earth has magnetized iron deposits, which caused it to act like a huge permanent bar magnet. However, the theory failed to explain how the magnetic field had sustained itself for long, because even if there was magnetized iron in the core earlier, the core of the earth is so hot that …
Read More »When is the earth nearest to the sun?
It is nearest to the sun on about the second or third day in January. The distance varies because it spins round the sun in an elliptical orbit or path. The time when the earth is closest to the sun is called the perihelion. The time when it is farthest away the aphelion comes six months later on the first …
Read More »What was the first life on the Earth?
Until quite recently it was thought that there were no abundant life forms on this planet until about 600 million years ago. When we remember that the Earth itself is at least 4500 million years old, it does seem to have taken a very long time before any animals or plants appeared. Then, geologically speaking, they must have developed very …
Read More »When will Oceans of the Earth Overflow?
When will the Oceans of the Earth Overflow? Try this out. Plug the sink and leave the water running. It will lead to a flood in the bathroom and a scolding for letting the water overflow. Since the sink could not hold an unlimited amount of water, it let the water spill out. But even the oceans are enormous bodies …
Read More »Which is the world’s first oceanarium?
The word oceanarium could mean two things. It can either mean a marine mammal park, which is a commercial theme park where dolphins, Beluga whales and sea lions are kept in water tanks and displayed to public in special shows. It could also mean a large scale aquarium such as the Lisbon Oceanarium, which is a vivarium consisting of at …
Read More »What are Themes for World No Tobacco Day?
For effectively celebrating the World No Tobacco Day all over the world, WHO selects a special theme every year as central component in order to distribute a global message to the people for more awareness. Other publicity materials for the theme like brochures, posters, fliers, press releases, websites and etc are also provided by the WHO to the members organizing …
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