Exercise: Fluid Densities




BIO226 : Individual : Environmental Variation : Fluid Densities

Exercise: Fluid Densities

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DUE: 22-Jan-1999 Assignments sent after the due date will receive a grade of zero.

1. When the temperature of a fluid changes, its density changes also. What is the definition of density? What is the density of water at 0^o, 4^o, 10^o, 20^o, 30^o C, and of ice at 0^o C? What source did you use for this information?

2. When lakes and ponds freeze in winter, why does the ice form at the surface of the water? Why does it stay there? What source did you use for this information?

3. What is a thermocline? When does it occur? What source did you use for this information?

4. Why is the establishment and existence of a thermocline dependent on the relationship between water temperature and water density? Explain. What source did you use for this information?

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