The water cycle is the continuous movement of water on, above, and below the surface of the Earth.

Transpiration is the process by which plants release water vapor into the atmosphere. It is not a component of the water cycle.

Evaporation is the process by which water changes from a liquid to a gas.

Condensation is the process by which water vapor in the air changes to liquid water.

Precipitation is the process by which water falls from the sky in the form of rain, snow, sleet, or hail.

Sublimation is the process by which water changes from a solid to a gas without first becoming a liquid.

The oceans are the largest reservoir of water on Earth.

Approximately 71% of the Earth's surface is covered by water.

The average depth of the ocean is approximately 3,700 meters.

The deepest point in the ocean is the Challenger Deep in the Mariana Trench, which is approximately 11,000 meters deep.

The Pacific Ocean is the largest ocean on Earth, covering approximately 30% of the Earth's surface.

The Atlantic Ocean is the second largest ocean on Earth, covering approximately 20% of the Earth's surface.

The Indian Ocean is the third largest ocean on Earth, covering approximately 15% of the Earth's surface.

The Arctic Ocean is the smallest ocean on Earth, covering approximately 4% of the Earth's surface.

The hydrosphere plays a vital role in the Earth's climate by regulating temperature, providing water for plants and animals, and helping to distribute heat around the globe.