Why are the oceans so salty?
Rain on land causes rivers to wash salt minerals from the land and carry
them to the oceans. Rivers not only carry salts to the ocean but
also many other elements. In fact, the oceans contain gold and silver!
If you calculate how much salt there is in the ocean, there would be enough
salt to give millions of boxes of salt to each person living in the United
States. That's a lot of salt! Salt is a very important commodity
to people around the world. Before refrigerators, people had to salt
their food in order to preserve it. Salt is important for preserving
food and organisms need a balance of salt in their bodies in order to stay
- Compare the periodic table placemats with
the elements that are in seawater figure. Students can
then discover the components of salt water. Go over what each of the major
constituent symbols including: