Thermal properties-specific heat-water properties, Biology

Thermal Properties

The range of temperature variatidn in the aquatic environment is smaller in comparison to air. This means the rate of change of temperature is slower in the aquatic environment than in air. This is because of unique thermal properties that minimise temperature changes. The temperature of liquid water rises and falls relatively slowly as compared to most other liquids. One calorie of heat energy is required to raise the temperature of one gram of water by one degree Celsius. This is about twice the amount of energy required by other covalently bonded liquids to bring about a similar temperature change. The many hydrogen bonds that link water molecules together absorb heat to a considerable extent without any corresponding change in temperature. Temperature of water drops slowly on losing heat.

Specific Heat

The heating and cooling of the water is relatively slow as compared to most of the other known liquids. This is mainly because the water molecules are linked with each other by hydrogen bonds. If the water is to evaporate, the hydrogen bonds will have to be broken and this requires energy. The specific heat of water is 4.18 joule (1 calorie per gram per degree centigrade). This means that it takes 4.18 joule of energy to heat one gram of water from 4oC to 5oC.

Posted Date: 12/10/2012 7:44:31 AM | Location : United States







Related Discussions:- Thermal properties-specific heat-water properties, Assignment Help, Ask Question on Thermal properties-specific heat-water properties, Get Answer, Expert's Help, Thermal properties-specific heat-water properties Discussions

Write discussion on Thermal properties-specific heat-water properties
Your posts are moderated
Related Questions
Properties and Functions of Synapses There is an interval between depolarisation of the presynaptic terminal and the earliest appearance of a postsynaptic response. This inter

Q. Illustrate Natural and Phylogenetic Classification? Natural Classification Natural systems of classification reflect the situation as it might have existed in nature. T

Explain the Complications of Burns? Most minor burns are superficial and do not cause complications. However, deep second-degree and third-degree burns swell and take more time

How does aldosterone act and where is it produced? Aldosterone is a hormone that acts upon the nephron tubules stimulating the resorption of sodium. Thus it contributes to the

Where in the cell can ribosomes be found? What is the main biological function of ribosomes? Ans) Ribosomes can be found free in the cytoplasm, adhered to the outer side of the

protoplasmic level of oganisation

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

What is the plasma membrane of the cell? What are its main functions? The plasma membrane is the outer membrane of the cell; it delimits the cell itself and a cell interior wit

Theor y of Epigenesis (i)          It was proposed by C.F. Wolff & supported by Von Baer. (ii)         Wolff proposed that germ cells contain definite but undifferentiated

Q. What are the main risk factors for hypertension? The major risks factors for hypertension are tobacco smoking, stress, obesity, sedentary lifestyle and alcoholism.