Question

SUMMARY OF INDIA SIZE AND LOCATION

Answer 1

On a hot day our bodies cool down by releasing heat through our skin. Our head will release more heat than any other part of our body. When it gets to hot for thatto work effectively we start sweatting. The sweat evaporates from our bodies cooling us down. Another way sweat helps us is that when wind blows on it our bodies cool down, to prove this go outside get 1 finger wet and the other one not wet and see which one is cooler. To add to this our bodies can take a couple degrees warmer with out stressing out too much, and if the situation calls for you to not be hot then your brain will completely tune out the fact that you are to hot (in some cases this can be life saving).If you want an extra way to stay cool go in the shade or wear whiteor light colored clothing. White absorbs less heat and shade blocks out heat given off by the sun.2)i) The temperature at which a solid becomes a liquid at standard atmospheric pressure. ii) The temperature at which a liquid boils at a fixed pressure, especially under standard atmospheric conditions.iii) The temperature at which a liquid of specified composition solidifies under a specified pressure. 3) evaporation happens at any temperature above melting point, boiling only at the boiling point. evaporation happens only at the surface, boiling happens throughout the liquid. boiling takes energy in (endothermic) to occur, while evaporation lets only the molecules with the highest kineticenergy out, leaving the rest of the water net kinetic energy, so evaporation is exothermic. the main difference is that boilinghappens when heat is added from the bottom and evaporation is when heat is added from the top. For instance, when you boil waterin a pot, it is being heated from the bottom, so air bubbles form atthe bottom and rise through the liquid, to the top. It would be evaporation if the heat was addedfrom the top (no bubbles would form).