Raindrops are small droplets of water that fall from clouds in the atmosphere. They form when water vapor condenses into tiny water droplets, which cluster together. When these droplets become heavy enough, they fall to the ground due to gravity. Raindrops can vary in size, typically ranging from 0.5 to 5 millimeters in diameter. When raindrops hit the ground or other surfaces, they create a splash and can contribute to the water cycle. This cycle involves processes like evaporation, condensation, and precipitation, which are essential for maintaining ecosystems. Water from raindrops replenishes rivers, lakes, and soil, supporting plant and animal life.