SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Sand has a higher specific heat than water.
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Sand has a lower specific heat than water.
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There is more water than sand at the beach.
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There is more sand than water at the beach.
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Detailed explanation-1: -Sand is a poor conductor of heat so when the Sun warms the sand, the heat is not distributed evenly, making the surface hot. Also the specific heat of sand is lower than that of water so when both are exposed to the same amount of light, the sand at the surface will have a higher change in temperature.
Detailed explanation-2: -Since, specific heat capacity of water is more than that of sand, it takes more time to become hot. For sand, the specific heat capacity is very less, so it heats up quickly during the day.
Detailed explanation-3: -Teacher Background. All you need to do on a sunny day is walk on a dry beach in the early afternoon to learn that the sand can get very much warmer than sea water. Water is a slow conductor of heat, thus it needs to gain more energy than the sand or dry land in order for its temperature to increase.