Tell Me Why

Tell Me Why

Tell Me Why Facts for Kids

Tell Me WhyTell me why do Stars Twinkle ?

The stars do not twinkle actually in outer space because there is no atmosphere. there are different layers of atmosphere having different temperature and density around us. When light from the star passes through these layers, it constantly bends. The image of the star is constantly distorted in sharpness and brightness. This makes the star twinkle.

why sky is blueTell me why is the Sky Blue ?

Light from the sun has seven rainbow colours, i.e., violet, indigo, blue, green, yellow, orange and red. Of these colours, red has longest wavelength and blue colour has the shortest wavelength. The colours with shorter wavelength are scattered much more readily than those of longer wavelengths. the blue colour of the sky is caused by scattering of blue colour of sunlight.

why do eyes blinkTell me why do we blink our eyes ?

The eyelashes catch dust which might go into our eyes if they do not blink. The blinking also provides automatic fabrication of the eyes. Every time we blink, the eyelid applies suction to the opening of the tear glands and takes out some of the fluid.

tears while slicing onionsTell me why do you cry while slicing onions ?

Onions absorb sulphur from the soil when they grow. When you cut an onion, you break onion cells, releasing their contents.

Enzymes get mixed up with sulphuric acids. This produces a sulphur compound which goes upwards towards our eyes and make our tear glands active.

pebbles on the beachTell me why Pebbles on the beach found ?

Large rocks get broken up by the actions of winks, water and natural disasters. Some of these smaller pieces of rocks get deposited on the shore of the sea. The movement of sea water and rubbing of the pieces against each other makes them round.

no sound in spaceTell me why can we not hear sound in space ?

In oder to travel, sound needs any of the three states of matter as a medium (solid, liquid or gas). There is no other medium required for sound to travel. We all know that the space is nearly a perfect vacuum. Because of this vacuum, the sound cannot travel in space and we cannot hear any sound in space.

why do we yawnTell me why do we yawn ?

Yawning is an involuntary action that causes us to open our mouths side. We yawn when oxygen levels in our lungs become low. The air sacs or alveoli need fresh air or else they tend to stiffen up a bit. so the brain prompts the body to either sigh or take a yawn to get more air into the lungs.

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