Practice Capillarity And Surface Tension (1.6) - Lecture - 13 - Fluid Mechanics

Practise this section

9 questions

Flashcard drill
3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
Define surface tension.
Show hintHide hint
Think about why insects can walk on water.
Question 2.
What is capillarity?
Show hintHide hint
Consider how liquid moves in a thin straw.
3Question 3.
What causes water to rise in a narrow tube?
- Gravity
- Surface Tension
- Pressure Difference
Show hintHide hint
Recall the straw example.
4Question 4.
True or False: Surface tension affects the ability of insects to walk on water.
- True
- False
Show hintHide hint
Think of the critters you see on water's surface.
Question 5.
A glass tube with a diameter of 5 mm is submerged in water. Calculate the height of the water column that would rise, given the surface tension of water is 0.072 N/m and the contact angle is 0 degrees.
Show hintHide hint
Make sure you use the correct units for density and gravitational acceleration.
Question 6.
Explain how capillarity affects the way plants obtain water, and why it is vital for their survival.
Show hintHide hint
Think about how tall trees draw water.

5 more questions in this section. Enroll free to practise them all.