Which step occurs first in the water cycle?

Evaporation occurs first in the water cycle because it is the process by which liquid water is transformed into water vapor due to heat, typically from the sun. This step initiates the cycle by removing moisture from bodies of water, such as oceans, lakes, and rivers. As water molecules gain energy and escape into the atmosphere as vapor, they contribute to humidity and set the stage for subsequent processes.

Once evaporation has occurred, the water vapor rises, cools, and eventually condenses, forming clouds. From there, precipitation can occur when the clouds become heavy enough with water droplets. Therefore, evaporation is the crucial first step that allows the water cycle to continue through condensation and ultimately precipitation.