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Question
What are metamorphic rocks?
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Solution
Metamorphic rocks are those rocks which were formerly igneous or sedimentary rocks, but owing to extreme heat and pressure in the interior of the earth it has been changed or altered to such an extent that they are quite different from what they once were slate, which is in reality clay, and marble’ which is in reality lime stone. Other examples of metamorphic rocks are quartzite from sand stone, graphite from coal, gneiss from granite and Mica from Schist.
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Fill in the blank
Sedimentary rocks such as limestone change into ___________.
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schist
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Fine grained metamorphic rock, generally produced by the low grade metamorphism of shale.
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| (b) | Sedimentary | (ii) | Transformation |
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| A | B | ||
| A. | Basalt | 1. | Anthracite |
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| D. | Gneiss | 4. | Sedimentary rock |
Statement (1): Sedimentary rocks consist of many layers.
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