Understanding Water Vapor to Water Droplets

The question asks to identify the process where water vapor, which is the gaseous state of water, changes into liquid water droplets.

Condensation Explained

This transformation from a gas to a liquid is specifically called Condensation. This is a fundamental process in the Earth's atmosphere, responsible for cloud formation and the appearance of dew.

Analyzing the Options

• Diffusion: This is the movement of particles from an area of higher concentration to an area of lower concentration. It doesn't describe the phase change of water.
• Condensation: This is the correct term for water vapor (gas) turning into liquid water droplets.
• Evaporation: This is the opposite process, where liquid water turns into water vapor (gas).
• Sublimation: This is the process where a solid changes directly into a gas, skipping the liquid phase (e.g., ice turning into vapor).

Therefore, the process by which water vapour changes into water droplets is condensation.