Hydro

Hydro is a term derived from the Greek word "hydor," meaning water. It is commonly used in the formation of compound words and may refer to water or the science of hydrology.

Hydrology

Hydrology is the scientific study of the movement, distribution, and management of water on Earth and other planets, including the water cycle, water resources, and environmental watershed sustainability. It is an interdisciplinary field that uses tools from geology, geography, physics, meteorology, and more.

Hydroelectric Power

Hydroelectric power is a form of energy generated by the conversion of free-falling water to electricity. It is considered a renewable energy source because the water cycle is continuously replenished by the sun.

Hydroponics

Hydroponics is a type of horticulture and a subset of hydroculture, which is a method of growing plants, usually crops, without soil, by using mineral nutrient solutions in an aqueous solvent.

Hydrotherapy

Hydrotherapy, formerly called hydropathy, involves the use of water for pain relief and treatment. The term encompasses a broad range of approaches and therapeutic methods that take advantage of the physical properties of water, such as temperature and pressure, for therapeutic purposes, to stimulate blood circulation and treat the symptoms of certain diseases.

Hydrogen

Hydrogen is a chemical element with the symbol H and atomic number 1. It is the lightest and most abundant chemical substance in the universe, constituting roughly 75% of its elemental mass.

See Also

• Hydrodynamics
• Hydrography
• Hydroculture
• Hydrogen economy