Question

1. by which process are clouds, dew, and fog formed?

condensation
precipitation
melting
evaporation

Explanation:

To determine the process forming clouds, dew, and fog, we analyze each option:

• Condensation: It is the process where water vapor (gas) cools and changes into liquid water droplets. Clouds form when water vapor in the atmosphere condenses onto particles, dew forms when water vapor near the ground condenses on surfaces, and fog is a type of cloud near the ground formed by condensation.
• Precipitation: This is when condensed water (like rain, snow) falls from clouds to the Earth’s surface, not the formation of clouds/dew/fog.
• Melting: Involves changing a solid (like ice) to a liquid, irrelevant here.
• Evaporation: Is the process of liquid water turning into vapor, the opposite of what forms clouds/dew/fog.

So the correct process is condensation.

Answer:

A. Condensation