Mini-Quiz: Fluid Friction

1. How can friction slow down a speeding boat?

   Fluid friction from the water against the moving boat surface hinders motionThat is correct. You know about fluid friction. Fluid friction actually speeds up the boatSorry, not correct. Try another button. Friction does not apply to boatsGood try, but not right. Select another answer.

2. Why does lubrication help reduce sliding friction?

   It actually increases sliding frictionSorry, not correct. Try another button. Fluid friction is less than sliding frictionCorrect. You are improving every day. Lubrication turns sliding friction into static frictionOops! Wrong answer. Re-read the question and try again.

3. What is an example of a fluid moving over a different fluid?

   Bubbles in boiling waterGood try, but not right. Select another answer. Water flowing over a layer of greaseThat is correct. You know about fluid friction. Sliding on a greasy surfaceOops! Wrong answer. Re-read the question and try again.

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