Page 184 - (DK) I Can’t Believe It! 2

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How much salt

is in the sea?

If all the salt could be extracted from the
oceans and put on land, it would
cover the surface in a layer of

salt 500 ft (150 m) thick.

The world’s oceans are
salty because salt from the The total surface area
land enters the water as rivers of all the land on Earth is
pick up salt on the underlying rocks approximately 57.5 million
and soil and deposit it into the sea. sq miles (149 million km ).
2
FAST FACTS
Salt makes up about 0.4 A huge salt mine A cup of water from the
percent of a person’s body lies under the city Dead Sea—the world’s
weight. A 110-lb (50-kg) of Detroit, saltiest water—has
person has about ½ lb (200 g) Michigan. seven times more salt
of salt—that’s 40 teaspoons. It is deep enough 1,200 ft than a cup of water from
for New York’s (366 m) the world’s oceans. The salt crust
Chrysler Building would be the
to fit inside. equivalent height
= of a 40-story
office building.

US_182-183_309600_Salt.indd 182 19/12/17 2:37 pm