5. Great catch!
You answered True!
At 33 feet (10 meters) below the surface, the
pressure is twice that of the surface. Most
divers must use an oxygen tank, though some
can hold their breath and swim to that depth
9. Great Catch!
You answered False!
More than 70 percent of the water used by
humans each year goes to agricultural
purposes. This includes raising animals as
well as plants.
13. Great Catch!
You answered False!
Rainwater contains small amounts of
dissolved minerals, as well as particles of
dust and dissolved gases. Distilled water is
the purest form
17. Great Catch!
You answered True!
Fresh water has a pH of 7, which is in the
middle of being acidic and alkaline. Seawater
is more alkaline, with a pH of about 8.
21. Great Catch!
You answered TRUE!
Many portions of the Antarctic ice sheet are
nearly 16,400 feet (5,000 meters) thick,
including some that extend far below sea
level.
25. Great Catch!
You answered True!
The boiling point of water gets lower as you go
up in altitude. At beach level, water boils at
212° F (100° C). At 9,843 feet (3,000 meters), it
boils at 194 °F (90 °C).
29. Great Catch!
You answered FALSE!
Water expands when it freezes. Ice, the solid
form of that liquid, is one of the few items that
floats as a solid.
33. Great Catch!
You answered True!
Water that forms on the outside of a cold
glass or on the inside of a window in winter
is liquid water condensing from water vapor
in the air. In cold air, water vapor condenses
faster than it evaporates.
41. Great Catch!
You answered False!
Some of the most ancient timepieces are
water clocks. These release water at a regular
rate that allows a viewer to gauge time by
how much water is left.