Types of rocks
Lesson 5 / 7
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I can use features to classify rocks into different groups and suggest properties of each type.
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Sedimentary rocks contain distinct grains that are stuck together.
Sedimentary rocks may contain fragments of shell or fossils, or larger pieces of grit or pebbles cemented together.
Igneous rocks contain crystals that point in many directions; metamorphic rocks contain crystals that mostly line up.
Rocks that contain interlocking grains or interlocking crystals are non-porous; rocks that don't are porous.
The properties of rock influence their uses.
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