Question

Water kept in an open bowl will quickly evaporate on the moon. Do you agree? Explain logically.

Answer 1

• The boiling point of a liquid depends upon the external pressure.
• On the moon, the atmospheric pressure is very low.
• As a result, the boiling point of water will be less on the moon than that on the earth.
• Compared to the earth, the gravitational force on the moon is very less.
• Due to this, water molecules can easily drift to the surface.
• Moreover, the temperature on the surface of the moon is also high.
• So water kept in an open bowl will quickly evaporate on the moon.