Igneous rocks begin as hot, fluid material. The word "Igneous" comes from the Latin word for fire!
The hot liquid inside the earth is called magma, but once it hits the surface of the earth it is called lava!
These filled kisses represent magma inside the earth!
Some igneous rocks that 4th graders need to know about and identify are:
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| Obsidian |
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| Pumice |
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| Basalt |
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| Granite |
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