Which is a surface form of condensation?
Answer and explanation
Correct answer: Dew
Dew forms when surfaces near the ground cool at night and bring the adjacent air to its dew point. Water vapour then condenses as tiny water droplets on those surfaces, so dew is a surface form of condensation. Frost also forms on surfaces, but it consists of ice crystals formed by direct deposition of water vapour. Fog and mist consist of droplets suspended in the air. Exam tip: droplets on a cool surface indicate dew.
Frequently asked questions
What is the correct answer to this question?
Dew
Why is this the correct answer?
Dew forms when surfaces near the ground cool at night and bring the adjacent air to its dew point. Water vapour then condenses as tiny water droplets on those surfaces, so dew is a surface form of condensation. Frost also forms on surfaces, but it consists of ice crystals formed by direct deposition of water vapour. Fog and mist consist of droplets suspended in the air. Exam tip: droplets on a cool surface indicate dew.
Which subject and chapter does this question cover?
This is a Class 12 Geography question. Chapter: Water in the Atmosphere. Topic: Forms of condensation: dew, frost, fog, and mist.
