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Cloudy nights are warmer than clear nigh...

Cloudy nights are warmer than clear nights-why?

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Clouds, being bad conductor ,prevent the heat from escaping into the space that it remains in the atmosphere and hence the night are warmer.
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BINA LIBRARY-THERMAL PROPERTIES OF MATTER -EXERCISE
  1. Explain why a piece of iron appears to be cooler than a piece of wood ...

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  2. Explain why two layer of cloths of equal thickness provide warmer cove...

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  3. Cloudy nights are warmer than clear nights-why?

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  4. At what common temperature would a block of wood and a block of metal ...

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  5. Explain why a piece of paper warpped tightly on a wooden rod is found ...

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  6. Two thermometers are constructed in the same way except that one has a...

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  7. A metallic solid sphere and a hollow sphere of same material and exter...

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  8. A sphere ,a cubeand a thin circular plate,all made of the same meterie...

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  9. Heat is generated continuosly in an electric heater ,but its temperatu...

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  10. A zinc rod is measured by means of a brass scale (Which is correct at...

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  11. A hot ball of iron weighing 200 g is dropped into 500 g water at 10°C ...

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  12. The densities of two substance are 2:3 and their specific heats are 0....

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  13. Calculate the minimum amount of water at 15°C needed to cool 200g of ...

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  14. A piece of metal weighing 50 g is heated to a temperature of 1000°C a...

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  15. How much steam at 100°C will just melt 3200g of ice at -10°C ?

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  16. Find the result of mixing 100 g of ice at -12°C with 50g of water at 9...

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  17. Calculate the amount nof heat required to change 5.0 kg of a ice to -2...

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  18. Find the time in which a layer of ice 3 cm thick on the surface of a p...

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  19. The opposite face of a cubic block of iron of cross-section 8 sq.cm ar...

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  20. Calculate the rate of loss heat through a glass window of area 1000sq....

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