Glossary H

The Environmental Glossary. Letter H +++ Popular Articles: 'Human', 'Hazard', 'Health'

Deutsch: Wasserkraft / Español: Hidroelectricidad / Português: Hidroeletricidade / Français: Hydroélectricité / Italiano: Idroelettricità

Hydroelectricity in the environmental context refers to electricity generated by harnessing the energy of flowing or falling water. This renewable energy source relies on the gravitational force of water in rivers, streams, or man-made reservoirs to produce electricity with minimal direct greenhouse gas emissions, making it a cleaner alternative to fossil fuels. Hydroelectricity plays a significant role in energy production worldwide, particularly in countries with abundant water resources and suitable geography for dams and water flow.

hydrofluorocarbons are used as solvents and cleaners in the semiconductor industry, among others; experts say that they possess global warming potentials that are thousands of times greater than CO2.

A Hydrofluorocarbons (HFCs) is Compounds containing only hydrogen, fluorine, and carbon atoms.

Deutsch: Wasserstoff / Español: Hidrógeno / Português: Hidrogênio / Français: Hydrogène / Italiano: Idrogeno
Hydrogen is a chemical element with chemical symbol H and atomic number 1. With an atomic weight of 1.00794 u, hydrogen is the lightest element on the periodic table. Its monatomic form (H) is the most abundant chemical substance in the universe, constituting roughly 75% of all baryonic mass.

A Hydrogeologic Cycle is the endless circulation of water between earth and the atmosphere.

A Hydrogeomorphic Approach (HGM) )is a functional assessment method which compares a wetland's condition to similar wetland types (as defined by HGM classification) that are relatively unaltered.

A Hydrogeomorphic (HGM) Classification is a wetland

A Hydrologic Cycle is the process of evaporation, transpiration, condensation, precipitation, infiltration, runoff, and percolation in which water molecules travel above, below, and on the Earth"s surface

Other /More definition:
A Hydrologic cycle is the process of evaporation, vertical and horizontal transport of vapor, condensation, precipitation, and the flow of water from continents to oceans.

A Hydrology is the science of dealing with the properties, distribution, and circulation of water both on the surface and under the earth.

A hydropower is Energy or power produced by moving water.