Biology STAAR (State of Texas Assessments of Academic Readiness) Practice Test

When water vapor cools and forms droplets, this process is known as?

1. Condensation

2. Precipitation

3. Evaporation

4. Transpiration

The correct answer is: Condensation

The process of water vapor cooling and forming droplets is known as condensation. This occurs when water vapor in the air loses energy as it cools, causing it to transition from a gaseous state to a liquid state. This is a key part of the water cycle, where moisture in the atmosphere condenses to form clouds and eventually leads to precipitation. In contrast, precipitation refers to any form of water, such as rain or snow, that falls to the Earth's surface from the atmosphere. Evaporation is the process where liquid water turns into water vapor, typically when it is heated. Transpiration is the release of water vapor from plants into the atmosphere. Understanding these distinct processes helps clarify the role of condensation in the overall water cycle and its importance in weather patterns.