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內容簡介: |
Volcanoes are one of nature''s great wonders. For years they
can stand dormant, but once active they can erupt in tremendous
explosions of power. Some eruptions are so big, they change the
earth''s climate. Luckily, geologists can now approximate when an
eruption will occur. What are the causes of an eruption and what
are the warning signs? Read and find out!
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關於作者: |
Franklyn M. Branley was Astronomer Emeritus and former
Chairman of the American Museum-Hayden Planetarium. In 1960, he
originated the Let''s-Read-and-Find-Out Science series. Dr. Branley
was the author of over 150 science books for children.
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