Is Sand a good absorber of light??? who will answer I will mark him the brainliest.!!!!!!
Answers
It is due to what is known as latent heat capacity. Water can hold more heat than almost any other substance. Please understand that heat and temperature are not the same. Temp is just a scale. Heat is a physical entity, it can be transferd between two masses.
Now, as to why water and sand heat up at different rates is the property mentioned earlier. If you were to take identical masses of, say , iron and water heated to a temp of 200 degrees and immerse the iron in the water the temp of the iron woul plunge while the temp of the water would rise only a little.
This means that water is a great way to store heat. If you want to heat a building with solar energy water is pumped through panels painted flat black and covered by a pane of glass to create a mini greenhouse. This can heat water to pretty high temps . this hot water is then pumped into a heat sink that consists of a very large , well insulated, concrete tank filled with cobble stones. When it is needed to heat the building this hot water is pumped through fan coils, kinda like a car radeator, and the heat from the water is transferred to the air.
How cool huh? " free " heat.
Some part of the sand particularly the top most part gets heated up more because the specific heat of sand is lower than the specific heat of water. Since it is a good absorber of light, it gets heated up more faster than water (water is a slow conductor of heat and needs to gain more energy than the sand in order to increase it's temperature.)