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The density of fluids decreases as temperature increases. This is because heat makes the particles in fluids move faster and spread farther apart, which means that there are fewer particles in a given volume.
Francesca Nigro
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Why does cold water sink under warm water?
Because cold water has a higher density than warm water. Water contracts when its temperature lowers, causing its density to increase.
How does convection happen in a room?
Warm air flows toward the ceiling and cool toward the floor. (expansion with heat results in lower density)
What happen to the density as it warm up?
the density lowers
Why does cold air have a higher density than warm air?
Yes, cold air has a higher density than hot air, and that is why hot air balloons rise, it rises above the cold air. hot air is less dense than cold air^
Convection occurs when a warm liquid or gas?
Convection occurs when a warm liquid or gas moves moves into a region where the surrounding liquid or gas is a different temperature. An example of this is a warm gas rising into a region where the surrounding gas is cooler due to the lower density of the warm gas. Movement of gases and liquid due to differences in density (because of differences in temperature) is referred to as "natural convection". When the movement is caused by another force such as a pump or a fan or a mixing blade, then it is termed "forced convection".
Is air pressure higher or lower in warm areas?
higher
How does the density of warm water compare with the density of cold water?
Generally, warm water has a lower density than cold water. However, between 1 and 4 degrees C the reverse is true.cold water?
Cold air is denser than warm air and therefore has higher?
Density
What is the density in seawater determined by?
Seawater's density varies by temperature and salinity. I.e., cold water is more dense than warm water, and water with a higher salinity (more dissolved salt) is less dense than water with a lower salinity.
Do cold air masseshave higher or lower air pressurethan warm air masses?
higher
Why does cold water sink under warm water?
Because cold water has a higher density than warm water. Water contracts when its temperature lowers, causing its density to increase.
How do you warm 42degrees C to 15 degrees C?
You can only "warm" anything from a lower temperature to a higher temperature. To warm something from 42oC the temperaure will become higher than 42oC. To get to 15oC you will have to COOL it i.e. extract heat to get to a lower temperature.
Does warm air have more density tan cold air?
Not really. Warm air usually has a higher volume than cold air, so its density is usually smaller than that of cold air.
Is cold water or warm water more dense?
The highest density of water is at the temperature of 4oC (ie. 1.000 kg/dm3), above or below this the density is lower.
Why does colder water have a higher density than warmer water?
because warm water has faster moving particles
What does density have to do with tornadoes?
It can affect wind by moving faster due to gravity
What is the cause of the warm air currents called thermals?
A thermal column (or thermal) is a vertical section of rising air in the lower altitudes of ...Solar radiation affects the oceans: warm water from the Equator tends to ... currents carrying heat from the interior of the earth to the surface. ... case the fluid motion is called gravitational convection
