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Why surface of water freeze at 0 but under water not freeze even at 4c?
Because 4 degrees Celsius is higher than 0 degrees Celsius
How long does it take to freeze 4 cups of water at 17 degrees Celsius?
You can't freeze water at 17 degrees Celsius. The freezing point of water is 0 degrees Celsius or 32 degrees Fahrenheit.
Why does water not freeze at 4 degrees Celsius?
Ice melts at 0 degrees Celsius. That is a speciality of water. At 3.98 degrees Celsius, the density of water is highest before it begins to form ice crystals. Water at this temperature may be a slush of water and ice.
Are most lakes 4 degree at the at the bottom?
Are most lake between0 and 4 degrees celsius at the bottom of them
Why don't lakes freeze solid?
Lakes freeze from the top down. Some lakes do freeze all the way to the bottom. The layer of ice and the less dense water below 4oC on the top provides an insulation to prevent the heat in the lower levels from escaping and the lower water does not freeze unless it looses this heat. A long enough, cold enough winter will remove the heat (this is simple thermodynamics) and the entire lake will freeze. Small lakes freeze faster - big lakes slower.
How cold for how long will it take for just water to freeze in a car?
Ok, this is based on equations 0 degrees Celsius is freezing and water will freeze at zero Celsius, but the time to freeze in direct relationship to volume so depending on your vehicle it would take anywhere to 4-6 hours at zero degrees Celsius. For every degree below 5:1 ratio -1 degrees Celsius the 2.5-4.75 hours to freeze. At -20 1 hour or less, to crack the block 2-3 hours. -40 degrees Celsius would take 22 min to freeze and to crack the block 1:10.
Predict the exact temperature of the water at the bottom of Lake Michigan on January 1 2010?
4 degrees Celsius
Why is the greatest density of water at 4 degree celsius important?
Fishes living in lakes which are prone to freezing in winter, take advantage of this property of water ( having greatest density at 4 degree celsius). When temperature starts reducing in winter, lake water cools upto 4degree celsius by convection as density increase with reduction in temp. On further cooling, due to abnormal expansion of water , density reduces & cold water remains at top .Then top layer frezees.Water being bad conductor of heat ,lake water below ice remains at 4 degrees & thus fishes can survive in winter also.
How long does it take for a two liter bottle of coke to freeze?
If it is placed in a standard freezer (or the freezer compartment of a fridge) it will not completely freeze; most will be solid over night. However, if the setting is low enough, it can take about the same time as water to freeze, which can be anywhere from 4 to 8 hours.
What is 4 Celsius colder than one Celsius?
1 - 4 = -3 degrees Celsius.
What water temperature of Gulf Mexico is?
At that depth, pressure is the dominant variable in the Ideal Gas Law. And since Water has to expand to freeze, it stays around 4 degrees Celsius.
Why does all the water in a lake have to be cooled to 4 degrees Celsius before water can be cooled below 4 degrees Celsius?
Water in a lake is usually cooled by the cold air above its surface rather than from the ground underneath it. As the top layer of water cools its density increases and so it sinks to the bottom, bringing other water up to the surface. This water is then cooled. This carries on until the temperature reaches 4 deg C when the density reaches a maximum. Further cooling lowers the temperature of the top layer but now its density is less than that of the water below so the top layer stays on top until it freezes (if it is cold enough). That is how you can get lakes with a frozen surface but liquid water below which can sustain aquatic life and also destroy human or other life forms that fall through the ice!
