Pressure Exerted by Liquids and Gases

  1. Q1: What do all liquids and gases exert on the walls of their container?
    Answer: Pressure
    Explanation: Liquids and gases exert pressure in all directions on the walls of the container.
  2. Q2: What happens to liquid pressure with increase in depth?
    Answer: Increases
    Explanation: The deeper you go in a liquid, the more pressure it exerts due to the weight of the liquid above.
  3. Q3: Which gas around Earth exerts pressure on us all the time?
    Answer: Air
    Explanation: Air in the atmosphere exerts pressure on everything on Earth.
  4. Q4: What is the pressure exerted by air called?
    Answer: Atmospheric
    Explanation: The force exerted by the weight of air above us is called atmospheric pressure.
  5. Q5: What instrument is used to measure the pressure of air?
    Answer: Barometer
    Explanation: A barometer is a device used to measure atmospheric pressure.
  6. Q6: In which direction does liquid pressure act?
    Answer: All
    Explanation: Liquid pressure acts in all directions at a given depth.
  7. Q7: What increases the pressure in a liquid apart from depth?
    Answer: Density
    Explanation: A denser liquid exerts more pressure than a less dense one at the same depth.
  8. Q8: Which state of matter, like liquids, also exerts pressure on container walls?
    Answer: Gas
    Explanation: Gases exert pressure on the walls of containers due to the motion of their particles.
  9. Q9: What is the unit of both liquid and gas pressure in SI?
    Answer: Pascal
    Explanation: The SI unit of pressure (whether liquid or gas) is pascal (Pa).
  10. Q10: What is experienced when you dive deep into a swimming pool?
    Answer: Pressure
    Explanation: You feel increased pressure on your body as you go deeper into the water due to rising liquid pressure.

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