How heavy is air?


Listening — Advanced Level
Share this exercise

Watch the video and answer the questions

  1. Air is fluid just like water.

  2. The air that fills our bodies exerts an amount of pressure different from that of air outside.

  3. Differences in air pressure are the very reason we are alive.

  4. We breathe by increasing the pressure in our lungs.

  5. There are more air molecules in and around our bodies than there grains of sand.


Practice your writing skills by discussing the questions below

  1. Since air is very important for our survival, how do you maintain it's freshness/cleanliness?

  2. Do you often go to the mountains to breathe fresh air?

  3. What would happen if our lungs are weak?


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