NATURE S MYSTERIES GEYSERS AND HOT SPRINGS THERESE M SHEA Britannica Educational Publishing IN ASSOCIATION WITH ROSEN EDUCATIONAL SERVICES
4 Earth is sometimes called the Blue Planet because most of it is covered by water Most of that water is salt water about 97 5 percent People and many other living things how ever need fresh water to live Fresh water has little salt in it Luckily there are freshwater lakes rivers and glaciers Another source though can not be seen About 30 percent WATER WATER EVERYWHERE Liquid water is one of the essential elements for life on Earth
5 of Earth’s fresh water is underground Some of this comes out of the ground as natural springs Hot springs and geysers are two types of natural springs that reveal much about what goes on beneath Earth’s surface They tell us about the intense heat of inner Earth about volcanic activity and about other forces at work in nature Hot springs and geysers are also popular places for people to visit People and all life need fresh water to live In what ways do you use fresh water THINK ABOUT IT Areas of the Atacama Desert of South America get no rainfall However underground water comes to the surface through geysers
