Water cycle | Definition, Steps, Diagram, & Facts | Britannica
6 天之前 · 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 total amount of water remains essentially constant.
The Water Cycle! - National Geographic Kids
The world’s water moves between lakes, rivers, oceans, the atmosphere and the land in an ongoing cycle called – you guessed it! – the water cycle. As it goes through this continuous system, it can be a liquid (water), a gas (vapour) or a solid (ice).
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.
Hydrologic Cycle - National Geographic Society
2023年10月19日 · The water cycle describes how water is exchanged (cycled) through Earth's land, ocean, and atmosphere. Water always exists in all three phases, and in many forms—as lakes and rivers , glaciers and ice sheets , oceans and seas, underground aquifers , and vapor in the air and clouds .
Water Cycle - Process and its Various Stages - BYJU'S
The water cycle, also known as the hydrologic cycle or the hydrological cycle, describes the continuous movement of water on, above and below the surface of the Earth. During this process, water changes its state from one phase to another, but …
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 - National Oceanic and Atmospheric Administration
2019年2月1日 · The water cycle shows the continuous movement of water within the Earth and atmosphere. It is a complex system that includes many different processes. Liquid water evaporates into water vapor, condenses to form clouds, and precipitates back to earth in the form of rain and snow.
Water Cycle - National Geographic Society
2024年4月29日 · Earth’s water cycle began about 3.8 billion years ago when rain fell on a cooling Earth, forming the oceans. The rain came from water vapor that escaped the magma in Earth’s molten core into the atmosphere. Energy from the sun helped power the water cycle and Earth’s gravity kept water in the atmosphere from leaving the planet.
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.
The Hydrologic Cycle - National Oceanic and Atmospheric Administration
2023年3月24日 · The hydrologic cycle involves the continuous circulation of water in the Earth-Atmosphere system. At its core, the water cycle is the motion of the water from the ground to the atmosphere and back again.