Topic 6: Water

20 interesting and useful water facts

     

      

  1. Roughly 70 percent of an adult’s body is made up of water.
  2. At birth, water accounts for approximately 80 percent of an infant’s body weight.
  3. A healthy person can drink about three gallons (48 cups) of water per day.
  4. Drinking too much water too quickly can lead to water intoxication. Water intoxication occurs when water dilutes the sodium level in the bloodstream and causes an imbalance of water in the brain.
  5. Water intoxication is most likely to occur during periods of intense athletic performance.
  6. While the daily recommended amount of water is eight cups per day, not all of this water must be consumed in the liquid form. Nearly every food or drink item provides some water to the body.
  7. Soft drinks, coffee, and tea, while made up almost entirely of water, also contain caffeine. Caffeine can act as a mild diuretic, preventing water from traveling to necessary locations in the body.
  8. Pure water (solely hydrogen and oxygen atoms) has a neutral pH of 7, which is neither acidic nor basic.
  9. Water dissolves more substances than any other liquid. Wherever it travels, water carries chemicals, minerals, and nutrients with it.
  10. Somewhere between 70 and 75 percent of the earth’s surface is covered with water.
  11. Much more fresh water is stored under the ground in aquifers than on the earth’s surface.
  12. The earth is a closed system, similar to a terrarium, meaning that it rarely loses or gains extra matter. The same water that existed on the earth millions of years ago is still present today.
  13. The total amount of water on the earth is about 326 million cubic miles of water.
  14. Of all the water on the earth, humans can used only about three tenths of a percent of this water. Such usable water is found in groundwater aquifers, rivers, and freshwater lakes.
  15. The United States uses about 346,000 million gallons of fresh water every day.
  16. The United States uses nearly 80 percent of its water for irrigation and thermoelectric power.
  17. The average person in the United States uses anywhere from 80-100 gallons of water per day. Flushing the toilet actually takes up the largest amount of this water.
  18. Approximately 85 percent of U.S. residents receive their water from public water facilities. The remaining 15 percent supply their own water from private wells or other sources.
  19. By the time a person feels thirsty, his or her body has lost over 1 percent of its total water amount.
  20. The weight a person loses directly after intense physical activity is weight from water, not fat.
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Topic 6

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Why care about water?

NationalGeographic:

There is the same amount of water on Earth today as there was when the dinosaurs roamed. And just less than one percent of the planet's water is available to meet the daily drinking water, sanitation and food needs of nearly 7 billion people and millions of other species. Learn more about water in all its forms and how you can make a difference.

Safe drinking water is essential to humans and other lifeforms even though it provides no calories or organic nutrients. Access to safe drinking water has improved over the last decades in almost every part of the world, but approximately one billion people still lack access to safe water and over 2.5 billion lack access to adequate sanitation.

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What happens to water in a vacuum?

What would happen to an ordinary glass of water in outer space? Filmed at the Johns Hopkins University Applied Physics Laboratory.

What is water?

        

Water is a chemical compound with the chemical formula H2O.water molecule contains one oxygen and two hydrogen atoms connected by covalent bonds. Water is a liquid atstandard ambient temperature and pressure, but it often co-exists on Earth with its solid state, ice, and gaseous state, steam (water vapor).

 

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Drops of water

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Seawater

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Tap water

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Comments

Linda Pospisilova
27 November 2013, 9:41 PM

Dear Stanka, your Page is varied, informational and pleasing to the eye. Would you be willing to teach me/us how to make an animation in Photoshop?  

Stanislava Maronová
27 November 2013, 10:46 PM

Thank you very much. :) And yes, it is my pleasure to teach you making animations in Photoshop. I dont know..what form of "teaching"  do you prefer? I could make another Mahara page with tutorial,or I could try to show you something during our sessions (for video commentary I have already prepared video about something else).

Andrea Fulierová
10 March 2014, 8:12 PM
Andrea Fulierová
10 March 2014, 8:50 PM
Andrea Fulierová
10 March 2014, 8:53 PM

Hi "kočko, Your page about Water is nice! :) Thanks to your presentation, I learned something new. Here is lot of important information and very interesting videos. Where do you get the information? 
You told me that you don't have time for visual editing/ graphics, but I like it. In simplicity is beauty! :) Xxx

Vladimír Kocourek
11 March 2014, 2:11 AM

Hi Stanka. I really like your page but what I like the best is look of that page. It´s obvious that you spent a lot of time with it. I´m really interested in that animated pictures. I hear that, you did it by your own, is it true? How did you do that? You found some videos and make screens of it and loop it or how?

I think water is good topic and there is a lot of things what you can say about that and you have a lot of important things right there.

I´m really interested in that video named "Why care about water?" . A lot of people doesn´t care about environment/water and they take it for granted that the water is flowing from water cock and I think that things like this should be broadcast in TV because most people need to open their mind.

6 comments