Why is water cooler than sand at the beach?

Sand also has a relatively low specific heat. Water, on the other hand, has a very high specific heat. It takes a lot more energy to increase the temperature of water than sand. This explains why the sand on a beach gets hot while the water stays cool.



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According to an article by NBC news, the sounds of the waves, coupled with other visual stimuli, help to trigger your parasympathetic nervous system, which helps you with feeling more relaxed. No wonder why there are so many YouTube sleep aid videos incorporating the sounds of the ocean.

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