Category: Lifestyle

😳 WHY? ❓❓ Why can we see our breath on a cold morning? The air we breathe out comes from deep inside our warm body, so it is warm and full of invisible water vapour. On a cold morning, as Read more

😳 WHY? ❓❓ Why do our fingers get wrinkled after a long bath? Many people think the skin simply soaks up water and swells, but the real reason lies in our nerves. When the fingers and toes stay in water Read more

😳 WHY? ❓❓ Why does a straw look bent in a glass of water? Light travels faster in air than in water. When light from the part of the straw under water passes from water into air on its way Read more

😳 WHY? ❓❓ Why do leaves change colour in autumn? Leaves are green because they are full of chlorophyll, the pigment that helps plants make food from sunlight. Leaves also contain yellow and orange pigments called carotenoids, but the large Read more

😳 *WHY?* ❓❓ *Why do stars twinkle?* Stars are so far away that each one reaches us as a tiny point of light. On its way to our eyes, this light passes through layers of air that are constantly moving Read more

😳 WHY? ❓❓ Why do we see lightning before we hear thunder? Lightning and thunder happen at the same moment, but they travel to us at very different speeds. Light moves at about 3 lakh km per second, so the Read more

======================= 😳 WHY? ❓❓ *Why does ice float on water?* Most substances become denser when they turn solid, but water is unusual. As water cools below 4°C and freezes, its molecules link up through hydrogen bonds into an open, hexagonal Read more

😳 *WHY?* ❓❓ *Why do onions make us cry?* When we cut an onion, we break open its cells and release sulphur compounds and an enzyme called alliinase that were stored separately. They react to form sulfenic acids, which another Read more

😳 WHY? ❓❓ Why is milk white? Milk is mostly water, but it carries countless tiny particles — fat globules and clusters of casein protein called micelles. These particles are about the same size as the wavelengths of visible light, Read more

😳 WHY? ❓❓ Why is sea water salty? Rain is slightly acidic because it absorbs carbon dioxide from the air. As it falls on land and flows over rocks, it slowly dissolves minerals and carries tiny amounts of salts through Read more