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ASMO Science 2022 - Level 1 (Grade 3-4) - School Round Question 12

ASMO Science · ASMO Science 2022 - Level 1 (Grade 3-4) - School Round

Question 12

We suck sweets when we are flying in an aeroplane, so that
  1. the vibration of the ear drum is reduced.
  2. the air pressure on both sides of the ear drum are equalised.
  3. the temperature in the mouth and in the cabin is equal.
  4. the noise of the aeroplane is not conducted to the ear.
  5. None of the above.