1. Evaporation: Water evaporates from the oceans, lakes, rivers, and other bodies of water into the atmosphere.
2. Condensation: Water vapor in the atmosphere condenses into clouds.
3. Precipitation: Water falls from the clouds through precipitation (rain, snow, sleet, or hail).
4. Infiltration: Some of the precipitation that falls on land infiltrates the ground and becomes groundwater.
5. Runoff: Some of the precipitation that falls on land becomes runoff and flows into streams and rivers.
6. Transpiration: Plants absorb groundwater and release it into the atmosphere through transpiration, the evaporation of water vapor from the surface of plants.
The water that falls on land as precipitation is the ultimate source of the water in the land oceans. Some of this water infiltrates the ground and becomes groundwater, which then flows into streams and rivers that eventually lead to the oceans. Some of the water that falls on land as precipitation becomes runoff and flows into streams and rivers that also lead to the oceans. Additionally, some of the water that evaporates from the land and into the atmosphere is eventually transported over the oceans by winds and falls as precipitation, contributing to the water cycle.