Tag: wind and rain

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Questions Related to wind and rain

Multiple choice physics air, winds and cyclones wind and rain example of some natural phenomena uneven heating of earth the concept of bernoulli's principle

Sea breeze and land breeze

  1. are caused by currents set up in air due to conduction

  2. are caused by currents set up in air due to convection

  3. are caused by currents set up in air due to radiation

  4. have no relation to conduction, convection and radiation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sea breezes and land breezes occur due to differential heating and cooling of land and water, which sets up convection currents in the atmosphere. Warm air rises and cooler air moves in to replace it, driven entirely by the process of convection.

Multiple choice physics air, winds and cyclones wind and rain example of some natural phenomena uneven heating of earth the concept of bernoulli's principle

State whether true or false.
The land and sea breezes are based on the fact that the specific heat of vaporisation of steam is very high.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The statement is true.
The specific heat capacity of water is much higher than that of sand. Air above land becomes more warmer than water during day. So cold air above water or sea blows to land known as sea breeze and vice versa for land breeze.
Multiple choice physics air, winds and cyclones wind and rain example of some natural phenomena uneven heating of earth

A small weight put on the pressure cooker increased the pressure of steam because.

  1. Density of metal is very high

  2. Area of contact is very small

  3. It is air tight

  4. Pressure builds up irrespective of the weight placed
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pressure is defined as force divided by area. By placing a weight on the pressure cooker's vent, the force is increased, and because the area of the vent is small, it significantly increases the pressure required for steam to escape.