The upper part of the earth's rocky crust is like a layer cake. It is made up of many layers of different kinds of rock, one on top of the other. These layers were built up slowly, one after the...
A crystal garden
When small crystals of a mineral join together, they "grow" into larger crystals. You can see how crystals grow by growing some crystals yourself. Here's what you will need: 6 tablespoons of water ...
Land in the water
Explosion after explosion of hot rock and ash spurted from the ocean. A thick cloud of steam rose high into the air. Slowly, for many days, a long mound of dark lava rose up out of the water. An...
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