There are two main ways this happens: Heat from the Sun causes water to evaporate from oceans, lakes and streams . Evaporation occurs when liquid water on Earth's surface turns into water vapor in our atmosphere. Water from plants and trees also enters the atmosphere.
How does water get warmed?
Compared to air or land, water is a slow conductor of heat . That means it needs to gain more energy than a comparable amount of air or land to increase its temperature. Also, water's fluid structure means its molecules are in a constant state of motion.
Where is water warmed?
Generally the ocean is warmer at lower latitudes and colder at higher latitudes. Higher latitudes mean you are closer to the poles. This heat difference also causes the oceans to swirl. Eventually the warmer water from the area near the equator moves up to the poles.
What is the specific heat of water?
One of water's most significant properties is that it takes a lot of energy to heat it. Precisely, water has to absorb 4,184 Joules of heat (1 calorie) for the temperature of one kilogram of water to increase 1°C. For comparison sake, it only takes 385 Joules of heat to raise 1 kilogram of copper 1°C.
Which cools faster water or soil?
Water is a slow conductor of heat, thus it needs to gain more energy than the sand or dry land in order for its temperature to increase. On the other hand, soil loses its heat much faster. ... Water has to lose more energy than the sand (dry land) in order for the temperature to decrease.
Is 30 degrees too hot for tropical fish?
Most tropical fish will live happily in water with a temperature of 24-26C, with some preferring a few degrees either side. In a heat wave lasting a few days, aquarium temperature can rise quickly to over 30C and at this temperature many fish will start to run into trouble.
Which is the warmest sea in the world?
Interesting Sea Facts:
The saltiest sea in the world is the Red Sea with 41 parts of salt per 1,000 parts of water. The warmest sea in the world is the Red Sea, where temperatures range from 68 degrees to 87.8 degrees F depending upon which part you measure.
Why is pool water warmer at night?
Because Air has a normal tendency to absorb the heat and cools faster than water . Because Air has a normal tendency to absorb the heat and cools faster than water. ...
How cold can the sea get?
These variations in solar energy mean that the ocean surface can vary in temperature from a warm 30°C (86°F) in the tropics to a very cold -2°C (28°F) near the poles .
What is Q in Q MC ∆ T?
Q = mc∆T. Q = heat energy (Joules, J) m = mass of a substance (kg) c = specific heat (units J/kg∙K) ∆ is a symbol meaning “the change in”
Why is CP is greater than CV?
The molar heat capacity at constant pressure is represented by Cp. ... At constant pressure, when a gas is heated, work is done to overcome the pressure and there is an expansion in the volume with an increase in the internal energy of the system . Therefore, it can be said that Cp is greater than Cv.
Why is specific heat of water so high?
Water has a higher specific heat capacity because of the strength of the hydrogen bonds . It requires a significant of energy to separate these bonds.
Why soil absorbs more heat faster than water?
Land surfaces absorb much more solar radiation than water. ... Since land absorbs more solar radiation the land surface retains more heat as do the vegetation for energy. Thus, land surfaces warm more quickly than water.
Does sand hold heat?
Sand has a low heat transfer coefficient of 0.06 watts per square meter degree Celsius. This means it can retain heat for very long periods of time and explains why the sand on the beach of a hot country remains warm hours after sunset.
Why is sand in a beach hotter than water at daytime but colder at night because?
Sand heats up faster than water because sand has less specific heat than water . Hence sand has less specific heat than water it requires less amount of heat to increase it's temperature which makes it heat faster comparatively.
Is 82 degrees too hot for tropical fish?
However, tropical fish prefer temperatures between 75 and 80 degrees Fahrenheit or between 24 and 27 degrees Celsius. ... For example, if a fish likes temperatures between 72 and 82 degrees Fahrenheit (27.78 °C), try not to keep them in 82-degree water .
