Water vapor is the gaseous form of water that is present in the air around us. It is created when liquid water evaporates, turning into gas due to heat from the sun or other sources. This process is a crucial part of the water cycle, which helps distribute moisture across the planet and supports life. When water vapor rises into the atmosphere, it can cool and condense to form clouds. These clouds eventually release moisture as precipitation, such as rain or snow, which replenishes rivers, lakes, and groundwater. Water vapor also plays a significant role in regulating the Earth's temperature by trapping heat in the atmosphere.