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hot water rises because the air bubbles produced by heating the water lower the density of the water, therefore causing it to be lighter than the unheated water.
This is not true. If so, where did the air bubbles come from in, let's say, a home's hot water heater?
The hot water rises because, as it is heated, the molecules move farther apart from eachother making the hot-er water less dense than the cold-er water. Therefore the hot-er water rises and the cold-er water sinks.
I am afraid that the original answer came from someone observing a pan of water heating on a stove. They saw bubbles rising and assumed they were air bubbles, when, in fact, they were tiny bubbles of vaporizing water.
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∙ 10y ago
Anonymous
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∙ 10y agoSea levels rise because glaciers and ice caps melt and that makes the sea level rise every year.
Another cause the waters rise is because of the gravitational pull that the moon has on the earth. Depending on what side of the earth the moon is on, we will either experience high or low tides.
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∙ 14y agoWater level is determined by the amount of air pressure that is being applied to it. If the same air pressure is applied to two separate but connected bodies of water the level will be the same.
Imagine a garden hose with water in it. As long as there are no kinks in it, the water will be at the same level no matter how high or low either end is. Take that same hose and blow in one end, the person on the other will get a face full of water because the air pressure has changed on the other end.
The same applies when you drink a soda through a straw. By sucking on the straw you change the air pressure compared to the air pressure around it. If you suck on a straw that is connected to a closed system; one that is sealed off from the outside and the result will be different. You may get some some soda, but only until the suction created on the inside of the bottle equals the amount of suction your lungs can achieve.
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∙ 13y agoThe vessel the water is in expands when heated thus making the vessel slightly larger. This makes the water appear to shrink, which is what you observe. Water also expands fractionally and soon compensates for this increase in the extra volume of the vessel. The narrower and longer the vessel is, the more pronounced this will be.
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∙ 6y agoCompared to cold water, hot water has less density; therefore it floats on the colder water - it tends to rise. I am not sure whether the situation is the same for molten rock; it likely has less density than non-molten rock, but I am not sure whether that's the only reason it rises.
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∙ 12y agoThe water rises, because the particles are moving faster, which makes them separate and take up more space, so the water rises
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∙ 12y agothe process known as convection current is occurring as the water is being heated. The cold, more dense water is sinking and the warmer, less dense water is rising.
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∙ 11y agothe cooler water evaporates into the atmosphere
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∙ 14y agoThe liquid in the thermometer must steady its temperature first before measuring the temperature of the warm water as the warm water is hotter.
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Why hot days mostly rain fall occur?
Rain fall tends to occur mostly on hot days because the hot air tends to evaporate and rise. When the water vapor increases, it cool and condenses to form clouds and soon rain.
Which process causes hot air to rise?
convection
What prevents water from seeping down to the center of the Earth?
A) it is too hot there so the water would just boil and rise up again as steam B) there must be permeable rock all way to the core for water to seep through, which there isn't
Will temperature rise if it's hot?
Heat is measured by temperature, so obviously if it's hot, temperature is high.
Does warm water rise and then cool?
NO
Does hot water rise and cold water sink?
HOT rises COLD sinks
Does hot water make yeast rise?
Warm, not hot, water will activate yeast causing them to produce carbon dioxide which causes breads to rise
Why is the boiler underneath the hot water storage tank?
So the steam can rise from the boiler to the hot water tank storage
What is a example of convection?
hot air ballon because since the air is heated in the hot air balloon it will rise, And water boiling in a pan if you were cooking pasta you can see the pasta rise and fall with the convection current in the boiling water
Will hot water rise up through open zone valves?
Of course, heat rises
What type of water will things float down faster in warm or cold?
Cold will sink to the bottom. Hot water will rise to the top.
Does heat rise or hot air rise?
Heat is the energy of the hot air. Therefore hot air rises
Why does hot water ries?
In general, hot means the substance is less dense. Less dense things tend to rise when they are in more dense things.
Why did the ink rise up when the flask is immersed into a hot water?
When the flask is immersed into hot water, the ink molecules gain thermal energy causing them to move more rapidly. This increased movement disrupts the intermolecular forces holding the ink together, making it less dense and causing it to rise up in the flask.
When cold water is mixed with hot water the hot air rises up why?
The reason for this is convection, when the temperature rises the liquid (in this case water) expands, causing it to rise above the cold water which is denser due to the lower temperature. So the hot water rises and the cold water sinks, making a convection current.
What happens to thermal energy when you mix hot and cool water together?
Since hot water is less dense that cold air the hot water will rise and the cold would sink then it keeps doing this in a circular motion 'till the thermal energy reaches to thermal equilibrium.
Is it normal for the water level in the pool to rise and drop at times?
yes it is normal. because the sun will evaporate the water when its hot and when it rains well the water goes into the pools
