1. In this experiment, the height difference in the U-tube manometer reflects:
- A. The density of the liquid
- B. The depth of the liquid
- C. The magnitude of the pressure on the probe
- D. The total amount of liquid in the container
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Liquid Pressure - Quiz
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In this experiment, the height difference in the U-tube manometer reflects:
Liquid Pressure - Quiz - Quiz Questions
Check your mastery of liquid pressure concepts, including the pressure formula P=pgh, Pascal's law, depth dependence, and manometer measurement techniques.
2. When the probe is rotated 360 degrees at the same depth in the same liquid, the height difference in the U-tube:
- A. Gradually increases
- B. Gradually decreases
- C. Remains unchanged
- D. Fluctuates
3. It is known that the density of salt water is greater than that of clear water. At the same depth, the pressure on the probe in salt water is ___ than in clear water:
- A. Greater
- B. Smaller
- C. Equal
- D. Cannot be determined
4. The main physical reason why the Three Gorges Dam is built in a shape that is 'narrow at top and wide at bottom' is:
- A. For aesthetics
- B. To save materials
- C. The liquid pressure at the bottom is greater
- D. To reduce water resistance
5. True or False: When the probe of the manometer dives from 10cm to 20cm in a liquid, the height difference of the U-tube liquid level will double.
- True
- False
6. When using a U-tube manometer, if the liquid levels on both sides of the U-tube are not level when the rubber membrane is not pressed, you should:
- A. Start the experiment directly
- B. Pour out some liquid from one end of the U-tube
- C. Remove the rubber tube and reinstall it to equalize the internal air pressure with atmospheric pressure
- D. Add water to the U-tube
7. Regarding the characteristics of internal liquid pressure, which of the following statements is incorrect?
- A. Liquid exerts pressure in all directions internally
- B. At the same depth, liquid exerts equal pressure in all directions
- C. The deeper the depth, the greater the pressure
- D. The pressure at the bottom of the container depends only on the water's gravity and has nothing to do with the container shape
8. Divers need to wear special diving suits when diving into the deep sea, mainly to:
- A. Keep warm
- B. Prevent sharks
- C. Resist huge liquid pressure
- D. Look good
9. A swimming pool is $2m$ deep, and the water density is $\rho = 1.0 \times 10^3 \text{kg/m}^3$. Let $g = 10\text{N/kg}$. What is the water pressure at the bottom of the pool in Pascals (Pa)?
- A. $2 \times 10^3 \text{Pa}$
- B. $2 \times 10^4 \text{Pa}$
- C. $1 \times 10^4 \text{Pa}$
- D. $1 \times 10^5 \text{Pa}$