Topics from March 2016
- Why don’t water and oil mix?
Posted by Keshav Jain on
- Why is salt soluble in water but not in oil?
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- Why is difficult to tie a knot in a silk lace?
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- Why do bubbles show rainbow colours?
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- Why do people step down ladders facing backwards?
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- Why does writing look reverse in the mirror?
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- Why do things burn?
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- Why do coloured soaps produce white bubbles?
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- Why a thin cane does hurt more?
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- Why don’t we need to use spectacles while using a microscope?
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- Why do musical instruments sound different?
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- Why is a long stick easier to break?
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- Why is rubber elastic?
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- Why is there a disturbance on TV when we operate an electrical switch?
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- Why does ice melt when subjected to pressure?
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- Why do fluorescent tubes consume less power?
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- Why does the surface of boiling milk rise?
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- Why can’t we write with a ballpoint pen on a smooth surface?
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- Why is it difficult to run petrol engines with diesel?
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- Why do empty vessels make sounder?
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- Why do we need to earth electrical appliances?
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- Why is it easier to balance a long pole vertically on the palm?
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- Why do we need to wear goggles in snow?
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- Why is it easier to fly a kite with a tail?
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- Why does the second hand of a quartz clock move in jerks?
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- Why doesn’t soap form lather in hard water?
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- Why do synthetic fabrics dry so quickly?
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- Why do boiled eggs become hard?
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- Why does fanning produce a sense of coolness?
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- Why should we not watch T.V. in a darkened room?
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- Why is ice cream softer than ice?
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- Why does food feel tasteless when we have a cold?
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- Why do cut onions bring tears?
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- Why is it easier to peel boiled potatoes?
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- Why do the leaves of ‘Touch-me-not’ plant fold when touched?
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- Why is lightning accompanied by thunder?
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- Why don’t oceans overflow?
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- Why do the seasons change?
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- Why do leaves fall?
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- Why is sea water salty?
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- Why does the Moon’s shadow move west to east during a total solar eclipse?
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- Why are planets sphere shaped?
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- Why does the Moon show phases?
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- Why do stars twinkle?
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- Why do earthquakes occur?
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- Why is the sky blue?
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- Why there are no tides in lakes?
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- Why does fog occur?
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- Why does climate vary from place to place?
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- Why are waves higher near beaches?
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- Why do rivers meander?
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- Why do clouds float?
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- Why is skating possible on ice?
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- Why is there a scent after it rains on parched soil?
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- Why do the dry beds of ponds and lakes crack?
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- Why are birds perching on electric lines not killed?
Posted by Keshav Jain on