1. Which process in the water cycle involves water turning into vapor?

The process in the water cycle that involves water turning into vapor is called evaporation. During evaporation, water from oceans, lakes, rivers, and other bodies of water is heated by the sun and turns into water vapor, which then rises into the atmosphere. This process is a crucial part of the water cycle as it helps to distribute water around the planet and plays a vital role in weather patterns and climate.