Exercise: Fluid Densities




BIO326 : Individual : Environmental Variation : Fluid Densities

Exercise: Fluid Densities

To complete this assignment successfully, you should:

Study the assignment carefully
Enter your response(s) in the space(s) provided
Fill in your Name and Email address
Send the Assignment

DUE: 28-Jan-2000 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(s) 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(s) did you use for this information?

3. In large temperate lakes, there is less primary productivity in summer than in spring in spite of more abundant sunlight in summer. What changes in lake conditions are responsible for this paradoxical situation?

4. What is the relationship between water temperature and water density that leads to the establishment and existence of a thermocline? Explain. What source(s) did you use for this information?

For grading purposes, please provide the following information:

Your Name:

Your Email address:

Once you have filled in all of the areas above, click the assignment button below to send the assignment to the instructor.

E-mail Professor Gaud at gaud@jan.ucc.nau.edu
or call (520) 523-7516