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Auburn University BIOLOGY 3040 Chapter 6 1)Michael Phelps takes full advantage of his position in the scale of organisms by maximizing his ability to glide in the pool and taking advantage of his inertial scale – Re, the Reynolds number, is a measure of the relative importance of the viscous and inertial characteristics of a selected environment
Auburn University
BIOLOGY 3040
Chapter 6
1)Michael Phelps takes full advantage of his position in the scale of organisms by maximizing his ability to glide in the pool and taking advantage of his inertial scale –
- Re, the Reynolds number, is a measure of the relative importance of the viscous and inertial characteristics
of a selected environment. Key components include the dynamic viscosity, velocity, and size. -
- Bacteria cannot coast. They stop moving when their flagella stop rotating; the time to stop is under a microsecond and the distance to stop is less than an Angstrom (in theory) -
- Where does water flow fastest relative to but parallel to a surface –
- A drop in temperature can affect kinematic viscosity and the metabolic activity of larval herring fish to the point that the fish can adjust their behavior and save energy under difficult physical conditions -
- The shape of a structure is very important in determining the drag that the structure experiences. Hence, fast swimming fish are usually very streamlined and tend to be long and slender. -
- Sessile organisms such as corals and anemones evolve mechanisms to reduce drag on their structures, so
that they are able to have a higher flow rate of fluid over their surfaces, and so increase the amount of food they can capture and reduce the damage they experience with high flow rates. Corals will, for instance, grow into prevailing currents across a reef. -
- What does a flatfish, a benthic marine worm, a plane’s wing, and a car’s carburetor have in common? –
- Very high-speed water flow can be turbulent, whereas low speed water flow is likely to be more linear. -
- The flow characteristics of water near a flat surface are controlled by what is called -
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