Give reasons : (a) Ice floats on water. (b) Marine life is able to s

1.	Give reasons : (a) Ice floats on water. (b) Marine life is able to survive in colder regions. (c) Water droplets can be seen outside a chilled water bottle.
Answer» (a) Water has maximum density at 4°C. Ice is lighter than water therefore it floats on water. (b) This anomalous property of water enables aquatic plants and animals to survive in colder regions of world because even when the water of ponds, lakes, river freezes it freezes on the top but remains a liquid below ice layer. (c) Sometimes we see water droplets on the outer surface of the glass containing ice-cold water, this is because the water vapour presents in’air, on coming in contact with the cold glass of water, loses energy and gets converted into liquid state, which we see as water droplets.

Give reasons : (a) Ice floats on water. (b) Marine life is able to survive in colder regions. (c) Water droplets can be seen outside a chilled water bottle.

Answer»

(a) Water has maximum density at 4°C. Ice is lighter than water therefore it floats on water.

(b) This anomalous property of water enables aquatic plants and animals to survive in colder regions of world because even when the water of ponds, lakes, river freezes it freezes on the top but remains a liquid below ice layer.

(c) Sometimes we see water droplets on the outer surface of the glass containing ice-cold water, this is because the water vapour presents in’air, on coming in contact with the cold glass of water, loses energy and gets converted into liquid state, which we see as water droplets.

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