Introduction
Earth, at this writing, is still the home of all known people. And though it is fun to speculate about life on other planets in our solar system and in other star systems, most of us will continue to live on earth. So it makes good sense to learn as much about our home planet as we can.
This How and Why Wonder Book is a good guide to learning more about the earth. It deals with a variety of topics and answers many questions. How was the earth formed? What is inside the earth? What causes volcanoes? What do fossils tell us? How are mountains and seas formed? Indeed, the book is really geology, the study of the earth, made easy.
A fascinating aspect about the study of the earth is that we can see today the same processes that have been going on for millions and millions of years in the past. Reading the book gives one a feeling of living with the history of the earth and learning about it at the same time.
Parents, teachers and children alike will profit from reading the book It is surely an essential addition to the growing How and Why Wonder Book Library of every young scientist.
Paul E. Blackwood
Specialist for Elementary Science
U. S. Department of Health, Education and Welfare Washington, D.C.
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