Mid term aquatic

Question 1

Surface tension?

Answer 1

The surface of the water acts as a membrane under tension. Surface tension is measured as force per unit length

The resistance force of the surface tension changes proportionally to the size of the object moving through the fluid.
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An extremity that moves through the surface performs more work than one moving below the surface.
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Using equipment at the surface increases the resistance

Question 2

Hydrostatic Pressure?

Answer 2

Pressure exerted on immersed objects. The pressure exerted on an immersed object is equal on all surfaces of the object.

Question 3

Viscosity?

Answer 3

Friction occurring between molecules of liquid resulting in resistance to flow. Resistance is proportional to the velocity of movement through liquid. Viscosity is what creates the resistance with all active movements

Question 4

Laminar Flow?

Answer 4

Movement where all molecules move parallel to each other. Typically slow movement

Question 5

Laminar flow?

Answer 5

Movement where molecules move parallel to each other, typically faster movements

Question 6

Turbulent flow?

Answer 6

Movement where molecules do not move parallel to each other, typically slower movements.

Question 7

Drag?

Answer 7

The cumulative effects of turbulence and fluid viscosity acting on an object in motion.
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As the speed of movement through water increases, resistance to motion increases
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Moving water past the patient requires the patient to work harder to maintain his/her position in the pool
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Adding equipment increases drag and resistance as the patient moves the extremity through water