Over 68 percent of the fresh water on Earth is found in icecaps and glaciers, and just over 30 percent is found in ground water. A. Only about 0.3 percent of our fresh water is found in the surface water of lakes, rivers, and swamps. The air holds water vapor, and the human body carries water as well. A cubic mile is the volume of a cube measuring one mile on each side. In this again lakes contain 20.9% and ground ice and permafrost contain 69%.Fresh Water. To break the numbers … On the agricultural side, the demand for fresh water is very much high. An estimated 1.5 to 11 times the amount of water in the oceans may be found hundreds of kilometers deep within the Earth's interior, although not in liquid form. And More…, Episode 694: Interview: Fred Watson, Australia's Astronomer at Large, Episode 693: Open Space 92: Why I Hate Embargoed News Stories, and More…, Episode 692: Open Space 91: Any Updates on Venus? Best Time to Wake Up | Sleep Time | by Age Groups | Earth-24, Effects of Natural Resources Depletion | Causes | Earth-24, What is the Paleo Diet | Benefits Meal Plan list | Earth-24, Technology Advantages & Disadvantage | Human | Environment | E-Waste. But in the riverside areas, the. If you’d like more info on Earth, check out NASA’s Solar System Exploration Guide on Earth. Of all the water on Earth, more than 99 percent of Earth's water is unusable by humans and many other living things! Post was not sent - check your email addresses! Because the oceans that cover roughly 71% of the area of Earth reflect blue light, Earth appears blue from space, and is often referred to as the blue planet and the Pale Blue Dot. This is just 1/4400 the total mass of the Earth, which means that while the oceans cover 71% of the Earth’s surface, they only account for 0.02% of our planet’s total mass. His newest book is called the Biological Universe, and features the search for life in the Milky Way and Beyond. Approximately 71 percent of the Earth's surface is water. For mining processes ( 5%)and industrial training (53%), people use the saltwater. https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/, https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2, https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G, https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/, https://www.youtube.com/channel/UCUHI67dh9jEO2rvK–MdCSg, https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fw, Episode 699: Open Space 96: The End of the International Space Station? This includes a significance presence of water. The density of the water depends upon the salinity of the water as the density of the water increase with the increase of the salinity. The second is the more specific 71% of Earth is water while 29… And More…, Episode 691: Interview: Seth Shostak from the SETI Institute, Creative Commons Attribution 4.0 International License. The freshwater groundwater takes about 30.1% and ice caps, glaciers take 68.7%. And More…, Episode 697: Interview: Theoretical Physicist Dr. Peter Woit, Episode 696: Open Space 94: Is It Realistic to Declare a "Free Mars"? In short, it now appears that meteorites were depositing water on Earth in its earliest days. Wallace Arthur is an evolutionary biologist and emeritus professor of Zoology at the National University of Ireland, Galway. According to this theory, water was brought to the world’s oceans thanks to icy comets, trans-Neptunian objects or water-rich meteoroids (protoplanets) from the outer reaches of the main asteroid belt colliding with the Earth. The Guide to Space is a series of space and astronomy poddcasts by Fraser Cain, publisher of Universe Today, Episode 700: Interview: Wallace Arthur and the Biological Universe. To break the numbers down, 96.5% of all the Earth’s water is contained within the oceans as salt water, while the remaining 3.5% is freshwater lakes and frozen water locked up in glaciers and the polar ice caps. https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/, Audio Podcast version: Salinity. More stories at: https://www.universetoday.com/ According to the U.S. Geological Survey, there are over 332,519,000 cubic miles of water on the planet. RSS: https://www.universetoday.com/audio, What Fraser's Watching Playlist: While water itself is not blue, water gives off blue light upon reflection. The freshwater groundwater takes about 30.1% and ice caps, glaciers take 68.7%. But how much of Earth is water – i.e. “While water itself is not blue, water gives off blue light upon reflection.” In the industrial areas the dirty oil and water mix in the rivers. This work is licensed under a Creative Commons Attribution 4.0 International License. See no ads on this site, see our videos early, special bonus material, and much more. The natural resources like waterfalls, rain, the waters coming from the hills contain freshwaters. The diversity of the environment also changes the demand for water. These meteorites are dated to the same epoch in which water was believed to have formed on Earth – some 11 million years after the formation of the Solar System. Like most facts pertaining to our world, the answer is a little more complicated than you might think, and takes into account a number of different qualifications.
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