The sun, which drives the water cycle, heats water in the oceans. Some of it evaporates as vapor into the air. … Most precipitation falls back into the oceans or onto land, where, due to gravity, the precipitation flows over the ground as surface runoff.
How does gravity drive the water cycle?
Gravity causes precipitation to fall from clouds and water to flow downward on the land through watersheds. Energy from the sun and the force of gravity drive the continual cycling of water among these reservoirs. As the water is heated, it changes state from a liquid to a gas.
How does the water cycle transport energy?
Energy is also transferred around the water cycle. Energy from the Sun drives the cycle, causing water to evaporate. This energy then transfers between the kinetic and potential energy of the molecules throughout the cycle.
How does solar energy drive the hydrological system?
As the diagram below shows, the Sun heats water from the ocean, lakes, rivers and Earth’s surface. This water then evaporates into the atmosphere. … As the air rises and the temperature drops, the moisture-laden air condenses, forming clouds and eventually resulting in precipitation in the form of rain or snow.
What is the main energy source driving the water cycle?
The sun is what makes the water cycle work. The sun provides what almost everything on Earth needs to go—energy, or heat.
Is solar still an effective model of the water cycle?
Stills are commonly used to purify liquids. … A solar still uses the greenhouse affect to trap energy from the Sun. The solar still is a model of the water cycle on earth: evaporation, condensation, precipitation.