Part A: Earth's Ocean: A storage Unit for Heat

Three-quarters that Earth's surface ar is extended with a substance the is a an extremely effective heat-storage material—water. Fluid H2O can absorb and also store a tremendous amount that heat energy without coming to be too hot itself. The efficiency of a problem at save heat power depends top top a parameter called details heat.

You are watching: How much heat energy is required to raise the temperature

Specific heat is a measure up of exactly how much power something absorbs contrasted to how warm it gets. An ext precisely, the details heat that a problem is the lot of energy it takes to raise the temperature of 1 gram of the substance by 1 degree Celsius.

Watch a short video from that demonstrates a "trick" that depends on the high specific heat of water.


Quantifying specific Heat

Quantitative experiments display that 4.18 Joules the heat power are forced to progressive the temperature the 1g of water through 1°C. Thus, a liter (1000g) that water that raised from 24 to 25°C has absorbed 4.18 J/g°C x 1000g x 1°C or 4180 Joules of energy. Because that comparison, alcohol (ethanol) has actually a lower certain heat: it takes only 2.2 Joules of energy to boost the temperature the one gram that ethanol through one degree Celsius.

To calculate the lot of heat power gained or shed by a substance, main point the mass of the problem by its details heat consistent multiplied through the change in temperature.

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watch the start of this animation and also note the Gulf Stream existing moving phibìc in the Atlantic Ocean and also the whole Atlantic ocean warming up together the seasons change. Together you watch the animation, mentally visualize the existing as a river of warm energy. Stop at about 24 secs in and play again from 10 seconds to watch the year repeat. Use the vital for Sea surface Temperature at the right.


Watch the remainder of the computer animation to view a visualization of what is dubbed the Sea surface Temperature Anomaly in the Gulf Stream. Anomaly indicates how much warmer or cooler the s surface was compared to normal. At right is a different color crucial (Ocean Temperature Departure) for reference.

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Once you've perceived the video, read this NOAA NESDIS article to learn an ext about the data in this animation.


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