Category: Important Questions
Why is the earth’s gravity less at the equator than nearer the poles? The earth is not completely spherical but is slightly bulged at the equator. Here the surface …
Why are fish dark on the top side and light on the bottom side? This difference in the colouring is a form of camouflage. If you look down at …
Why do plants look green? The colour of an object is actually the colour of light which it reflects out of the seven colours of white light falling on …
Why can’t flies move about frequently during the night? Like human beings, the flies are also diurnal i.e. they are active during the day and take rest during the …
Why is black ink used in printing? Black ink is used for printing because it generates maximum contrast against a white or light coloured paper. It is also used …
Why are racing cars faster than ordinary cars? Racing cars are so built that they are faster than ordinary cars. They have a stream-lined body to cut the resistance …
Why did the Egyptians mummify the dead bodies? The Egyptians strongly believed in life after death. To help the dead person make the journey from one life to the …
Why is a nurse helping in child birth, called a mid-wife? Mid-wife is a woman who is trained to help deliver babies and offer support and advice to carrying …
