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Question
Give reasons for the following
Silicates are the most common rock forming minerals.
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Solution
Silicates are the most common rock forming minerals because they are most common minerals in the Earth’s crust.
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Fill in the blank
Conglomerate is an example of _____________ rocks.
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Classify the following rock: Rock salt
Classify the following rock: Loess
Classify the following rock: Slate
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The upper part of lithosphere, which is rich in silica and aluminium.
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Fine grained metamorphic rock, generally produced by the low grade metamorphism of shale.
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| A | B | ||
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
Match the following.
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
Match the following:
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
