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

Three-quarters the Earth's surface is covered with a substance that is a really effective heat-storage material—water. Liquid H2O have the right to absorb and store a significant amount the heat energy without coming to be too warm itself. The efficiency of a problem at save on computer heat energy depends top top a parameter called details heat.

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

Specific heat is a measure up of how much power something absorbs compared to how warm it gets. More precisely, the specific heat of a substance is the amount of energy it takes to raise the temperature the 1 gram of that substance by 1 degree Celsius.

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


Quantifying details Heat

Quantitative experiments display that 4.18 Joules the heat power are compelled to progressive the temperature the 1g of water through 1°C. Thus, a liter (1000g) the water that increased from 24 come 25°C has absorbed 4.18 J/g°C x 1000g x 1°C or 4180 Joules that energy. For comparison, alcohol (ethanol) has actually a lower certain heat: it takes just 2.2 Joules of power to increase the temperature the one gram that ethanol by one level Celsius.

To calculate the lot of heat power gained or shed by a substance, multiply the mass of the substance by its certain heat continuous multiplied by the readjust in temperature.

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clock the start of this animation and note the Gulf Stream existing moving phibìc in the Atlantic Ocean and the entire Atlantic s warming up as the periods change. As you watch the animation, holy spirit visualize the present as a flow of heat energy. Stop at about 24 secs in and also play again native 10 secs to view the year repeat. Use the an essential for Sea surface ar Temperature in ~ the right.


Watch the remainder that the animation to see a image of what is called the Sea surface ar Temperature Anomaly in the Gulf Stream. Anomaly indicates how much warmer or chillier the ocean surface was compared to normal. At appropriate is a different color key (Ocean Temperature Departure) because that reference.

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


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