why the temperature drops below cero in the dessert at night?
349772
Sand in the desert cannot absorbe heat. It just reflects what is there in the environment. this is why it is very hot during he day when the sun is out as it reflects all the heat that is getting focussed on it. And when the dusk falls, since sand has not been absorbing the heat during the day it becomes cold as soon as the environment around loses on temprature. This is majorly due to the no absorbing property of Sand and scarcity of water. \nTry this, You you can keep a part of the sand in the desert wet for the day that part will be much less colder at night and much less hot during the day becasue water will absorb heat during the day and make it feel cool as it is not getting reflected immediately and reflect heat in the night making it a little warm.
613258
Pentiums start rolling back their clock (thus slowing down processing) at fairly low temps.   Its best to keep them below 65 celsius otherwise your system will grind to a halt when the therman protection kicks in.
195804
Put in room tempature. Not cold enough that it will keep. Not hot that it will cook.
71035
Not 100% sure. But I think its because the air inside isn't moving. The air inside is stationary, while it is continuously circulating outside, which causes changes in the temperature. IMHO
963666
because it gets dark at night on this planet
1031939
temperature decreases with increase in altitude
336061
I think the temperatures are too extreme for life as we know it. There is a four hundred degree ( Fahrenheit ) difference between night and day.
20977
Before it snows the sky may be clear permitting ground heat to be lost by radiation cooling to outer space.  The temperature may drop well below freezing.  While it is snowing the "snow cloud" blocks radiation cooling and reflects heat back to the ground.  Snow forms when the cloud moisture drops to 32F and water gives up its latent heat while freezing which opposes a further temperature drop.
155061
The temperature must drop below freezing up in the atmosphere,  where there is a concentration of water vapor. Typically this is caused when a warm front (full of water) rolls over a cold front -- the drop in temperature condenses the water high up and it drops to the ground as snow. But it can also happen when a cold front moves over a lake (ie. lake-effect snow). This is seen in a place like Buffalo.
1117573
Hai shishi.. Assume that u r in pluto,whether it's day or night the temperature always remains freezing! Likewise when night comes obviously our earth rotates and turn the other side the previous 12 hours jouney.\n          Then the gradual rotation makes us again face sun.Thus if u set up a thermometer at the outside areas u will notify the increase in temperature along with the rotation of clocks.\nremember..'THE EARTH IS SPHERICAL!'
128190
freezing 32 degrees ferenheit or below. Der!
1034469
Just places were dead skin has fallen off of Clausius<sp>>\nBecause it's all  dead skin it kind rips out and irregular leaving voids..
642524
If you have a freezer that will lower the temp. of carbon dioxide to its freezing point you're straight in. Somewhere in the neighborhood of -125 Fahrenheit
932795
The 'science guru' is right, but I'll chime in to try and help you wrap your mind around it. \nThe slower magma cools the bigger the crystals in it get. The deeper the magma is in the earth the more it is insulated (like a pizza in one of those pizza delivery bags) and so it cools lots slower the deeper it is.\nThe faster the magma cools the smaller the crystals in it. Since the earth insulates the magma it has to get closer to the surface before it can cool fast enough to have small crystals.\nIf you have two different sizes of crystals then you must have two different rates of cooling.\nThe crystals that can form at higher temps start forming first, of course, and then, when the magma gets pushed up nearer the surface the rest of the material cools quickly into small crystals that surround the larger ones.\nDoes that help?
231023
This is caused by thermic convection of the air. In the deserts you normally have high differences in temperature between day and night, so hot air is rising rapidly while cold air is moving downwards after sunset. This different densities in the air makes the light bend and the stars seems as if they are dancing, just as if you were looking through an irregular glass. \nIt's a bad night for astronomers.
601427
The temperature reduced in proportion with the height of the hill. More the height less is the temperature. The clouds around the hills make it less hot.The flow of cold water, waterfalls, cool breeze add to the chillness.  The shade of the trees reduces the heat. The chillness cools the clouds to pour local rain.  \nThe passing clouds are intercepted by clouds and made to shower more rain.\n  The slope of the hills absorb lesser heat received over a larger area  of the slop through the vertical rays during the high noon time.  The slanting rays with less heat does not reach most of the landscap because of the hilly shape.
524258
Good point! \nCongratulations, that's got me thinking. Ouch!\n\nCould it have something to do with maintaining the frozen goods in the freezer, which obviously is less important in a fridge. Afterall, when the light comes on in the fridge it produces kinetic energy that turns the light into heat which could linger trapped inside once the door is shut again. \n\nWell, that's my feeble attempt at an answer. It would just drive me crazy otherwise!