Anonymous
Anonymous asked in Science & MathematicsPhysics · 1 decade ago

beach sand is very hot during the day and very cold at night. Explain this terms of specific heat.?

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  • 1 decade ago
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    Because sand has a low specific heat, it has a low capacity per unit weight per degree temperature to absorb heat.This means that the temperature rises quickly in response (remember, temperature is the average kinetic energy of a system; not the heat capacity). It also is the reason why the sand cools quickly: the Temperature drops, as heat is released.

    However, this is not the only reason: In fact, you will find that dark coloured sand will heat up and cool down more rapidly than white sand. This has to do with the way in which a body absorbs and emits radiation: a white body radiates at the spectrum of visible light; but a black body radiates energy at all wavelengths.

    Source(s): I discovered this when i couldn't work out why white coloured glass sand cooled in a hopper a lot slower than dark coloured mineral sand Look up thermal radiation in Wikipedia for more info.
  • 1 decade ago

    Specific heat is the amount of heat flow required to change the temperature by one degree. A substance with a low specific heat, like sand, requires little heat flow to change temperature.

  • 1 decade ago

    Beach sand heats up like any other land surface accros the shore. So it is hot in day. Sea water heats up very slowly and cools alsovery slowlly as compared to hard surface. When the land surface is hot, by late noon wind starts flowing from see to land to fill the gap caused by warm air climbing high. This wind flow cools the beach sand as it evaporates the moisture it receives from underneth wet sand. Again in the early night the land is cooler than the sea waters and wind starts flowing from land to sea. Again this wind further evaporates the moisture from underneth wet sand and further cools the surface sand.

  • 1 decade ago

    It has a low specific heat, so it heats and cools quickly.

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