Kathleen Weidner Zoehfeld; James Graham Hale
|ISBN:||0060245093 9780060245092 0060245107 9780060245108 0064451283 9780064451284|
|描述：||29 pages : color illustrations, color maps ; 21 x 26 cm.|
|叢書名：||Let's-read-and-find-out science., Stage 2.|
|責任：||by Kathleen Weidner Zoehfeld ; illustrated by James Graham Hale.|
Even though Mount Everest measures 29,028 feet high, it may be growing about two inches a year. A mountain might be thousands of feet high, but it can still grow taller or shorter each year. Mountains are created when the huge plates that make up the earth's outer shell very slowly pull and push against one another. Read and find out about all the different kinds of mountains. The earth's continents rest on plates that move slowly across our planet's molten center. Over time, the motion of these plates causes mountains to form. Packed with diagrams and maps, this engaging book thoroughly describes plate tectonic theory and how the forces of nature shape our world.