Anomalous Water Quiz

"That the only solvent (water) with the refinement needed for nature's most intimate machinations happens to be the one that covers two thirds of our planet is surely something to take away and marvel at."
From Life's Matrix by Philip Ball.
Here are some more questions on the unique properties of water.

1.  Water arrives at the tops of Redwoods, Sequoia sempervirens, and Douglas Firs coniferous trees of the genus Pseudotsuga, via the xylem by using the water loss in the leaves. This is surprising since these trees can be over 100 meters tall and water cannot be raised higher than approximately ten meters by vacuum alone.  Curiously,  on an average summer day, the water in the xylem is  metastable or more precisely:
A. Supercooled
B. Polywater
C. Supersaturated
D. Superheated

2. The _____ fold symmetry of snowflakes may have been known to Chinese Alchemists for millennia since they attribute this number to water.
A. four
B. five
C. six
D. eight

3. In an electric field, the ions of water: protons and hydroxide are
A.  are incredibly fast
B. surprisingly slow for their size.

4. Water is
A. diamagnetic and may be levitated in strong magnetic fields.
B. non-magnetic and can not be influenced by magnetic fields
C. magnetic and can create its own magnetic field
D. paramagnetic and is magnetic only in the presence of an external magnetic field

5.   Normal water ice is twenty to thirty times __________ than other everyday materials.
A . stickier
B.  greasier
C.  slipperier
D.  stinkier

6.  True or False: When confined in narrow spaces water can change significantly its properties.
A. true.
B. false

7.  Substances that dissolve in water are
A. Hydrophobic
B. Uniformly electrically neutral.
C. Polar compounds meaning having separate of centers ofpositive and negative electrical charge

8. Water plays an intrinsic role in
A.  Jovian Lightning
B.  Krilian Photography
C.  Protein folding in living cells
D.  Supplying the Earth's Magnetosphere with many of its ions
E.   all of the above

9. When a non polar gas like methane is dissolved in water it __________ of the solution
A.  lowers the melting point
B.  raises the freezing point
C.  both A& B.
D.  does not change the freezing or melting point..

10. HeavyWater ice
A. emits alpha particles
B. is poisonous in trace amounts
C. sinks in normal water
D. slightly larger than that of ordinary-water ice of the same weight


Bonus question: Our bodies are mainly composed of water and keeping the right level of PH, salts, sugar etc is very important. To remove excess nitrogen animals use either urea or uric acid. One group of animals can handle levels of urea in their blood that would kill any other animal. They have such high levels in their bodies that they excrete urea through their skin. Name this group of animals:

 
Ce texte © 2008 Christopher Yukna - tous droits réservés

feel free to contact me with any questions or comments

Christopher YUKNA 
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Intimidated? Maybe you can find the answers at the resources at Cramsters.