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Water cycle - Wikipedia
The water cycle (or hydrologic cycle or hydrological cycle) is a biogeochemical cycle that involves the continuous movement of water on, above and below the surface of the Earth. The mass of water on Earth remains fairly constant over time.
NASA Earth Science: Water Cycle | Precipitation Education
The hydrologic cycle describes the pilgrimage of water as water molecules make their way from the Earth's surface to the atmosphere, and back again. This gigantic system, powered by energy from the sun, is a continuous exchange of moisture …
Water cycle | Definition, Steps, Diagram, & Facts | Britannica
2024年12月9日 · Water cycle, cycle that involves the continuous circulation of water in the Earth-atmosphere system. Of the many processes involved in the water cycle, the most important are evaporation, transpiration, condensation, precipitation, and runoff.
The Water Cycle | U.S. Geological Survey - USGS.gov
2022年10月2日 · The water cycle describes where water is on Earth and how it moves. Human water use, land use, and climate change all impact the water cycle. By understanding these impacts, we can work toward using water sustainably.
Water Cycle – Definition & Steps Explained With Simple Diagram
2023年5月17日 · Water cycle, also known as the hydrologic cycle, involves a series of stages that show the continuous movement and interchange of water between its three phases – solid, liquid, and gas, in the earth’s atmosphere. The sun acts as the primary source of energy that powers the water cycle on earth.
What Is the Water Cycle? - NASA Climate Kids
2025年2月4日 · The water cycle is the path that all water follows as it moves around Earth in different states. Liquid water is found in oceans, rivers, lakes—and even underground. Solid ice is found in glaciers, snow, and at the North and South Poles. Water vapor—a gas—is found in Earth’s atmosphere.
What is the Earth's "water cycle?" | U.S. Geological Survey - USGS.gov
The water cycle, also known as the hydrologic cycle, describes where water is stored on Earth and how it moves. Water is stored in the atmosphere, on the land surface, and below the ground. It can be a liquid, a solid, or a gas. Liquid water can be fresh or saline (salty). Water moves between the places it is stored.
Water cycle - National Oceanic and Atmospheric Administration
2019年2月1日 · Water is essential to life on Earth. In its three phases (solid, liquid, and gas), water ties together the major parts of the Earth’s climate system — air, clouds, the ocean, lakes, vegetation, snowpack, and glaciers. The water cycle shows the continuous movement of water within the Earth and atmosphere.
Water Cycle Explained - Key Stages and Importance
2025年1月8日 · The water cycle's significance extends far beyond simply moving water around our planet. As the foundation for life on Earth, this cycle connects and sustains every living system through several critical functions.. First, it serves as Earth's natural water distribution system, transporting water across continents and ecosystems without any external energy input.
What is the water cycle? - BBC Bitesize
Learn about the different stages of the water cycle. The water cycle is the journey water takes as it moves from the land to the sky and back again. It follows a cycle of evaporation,...