Water Trivia Questions
What is water?
A: Water is a transparent and nearly colorless
chemical with the chemical formula H2O.
The formula H2O means that its molecule contains
one oxygen and how many hydrogen atoms?
A: Two.
Water covers what percentage of the Earth's
surface?
A: 71%.
Water is vital for all known forms of what?
A: Life.
On Earth, 96.5% of the planet's crust water is
found in what?
A: Seas and oceans.
What percentage is in the form of glaciers and
the ice caps of Antarctica and Greenland?
A: 1.7%.
Of all the water on earth, what percentage is
fresh water?
A: Only 2.5%.
Of that 2.5 percent of fresh water, 98.8% of
that water is in what form?
A: Ice and groundwater.
Less than 0.3% of all freshwater is in what?
A: Rivers, lakes, and the atmosphere.
Evaporation and transpiration contribute to
what?
A: The precipitation over land.
Large amounts of water are also chemically
combined or adsorbed in what?
A: Hydrated minerals.
How many people still lack access to safe water?
A: Approximately one billion.
However, some observers have estimated that by
2025 more than half of the world population will
be facing what?
A: Water-based vulnerability.
A report, issued in November 2009, suggests that
by 2030, in some developing regions of the
world, water demand will exceed supply by how
much?
A: 50%.
What does approximately 70% of the freshwater
used by humans get used for?
A: Agriculture.
At normal atmospheric pressure of 14.5 psi water
is a liquid between the temperatures 32 °F and
what?
A: 212 °F.
At very low pressures water cannot exist in what
state?
A: The liquid state.
At very low pressures water passes directly from
solid to gas by what method?
A: Sublimation—a phenomenon exploited in the
freeze drying of food.
Water differs from most liquids in that it
becomes what as it freezes?
A: Less dense.
What kind of light is strongly absorbed by
water?
A: Infrared and ultraviolet.
What dissolved gas gives the fizz to carbonated
beverages?
A: carbon dioxide.