Air Pressure, Thermal Expansion, and Atmospheric Science

Questions about air pressure differences, thermal expansion of fluids, convection, and atmospheric circulation patterns

6 Questions Published

Questions

Question 1 Multiple Choice (Single Answer)

Why do two balloons come closer when we blow in the space between them ?

  1. Greater pressure inside the balloons than the reduced pressure in between them drives the balloons towards one another.
  2. Blowing air in between increases the pressure in between the balloons pulls them closer.
  3. The gravitational force pulls the two balloons closer.
  4. None of the above.
Question 2 Multiple Choice (Single Answer)

When a vehicle travels very fast, a region of ______ is created temporarily just behind it.

  1. High pressure
  2. Low pressure
  3. High density
  4. Cyclone
Question 3 Multiple Choice (Single Answer)

Which of the following principle shows that if you increase air speed its pressure will decrease?

  1. Darwin principle
  2. Einstein principle
  3. Bohr principle
  4. Bernoulli's principle
Question 4 Multiple Choice (Single Answer)

Increase in air speed is associated with ______________ .

  1. increasein air pressure
  2. decrease in air pressure
  3. increase in air temperature
  4. decrease in air temperature
Question 5 Multiple Choice (Single Answer)

A piece of paper is kept on the table.  You have to lift it from the table by blowing high-speed air over it. In which direction will you blow the air?

  1. Sideways
  2. In the upward direction
  3. In the downward direction
  4. In the upward direction below the table
Question 6 Multiple Choice (Single Answer)

Two pieces of papers are held parallel. Air is blown with a high speed in between them. Which of the following phenomena will be observed?

  1. The papers will move away from each other.
  2. The papers will move towards each other.
  3. The papers will stay at their position.
  4. The papers will catch fire due to increase in air temperature.