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Sagot :
1. In what ways are rock similar?
Answer :- Although there may be many differences between rocks and minerals, there are only a few similarities between them. Rocks as well as minerals are found in the Earth's crust (the outer layer of the Earth). Another similarity between the two is that rocks as well as minerals both have commercial value.
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2. In what ways are rocks different? What do you think is the cause for all these differences?
Answer :- Different rocks have different characteristics because of their minerals, the ways in which the rocks were formed, and the processes that acted on the rocks since they were formed.
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3. Into how many groups have you classified your rock samples?
Answer :- Geologists classify rocks in three groups, according to the major Earth processes that formed them. The three rock groups are igneous, sedimentary, and metamorphic rocks.
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4. What are the criteria you used in grouping them? Conclusion: What are the physical properties of rocks.
Answer :- Properties that help geologists identify a mineral in a rock are: color, hardness, luster, crystal forms, density, and cleavage.
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