Question
Download Solution PDFWhich of the following statements is true?
A. Igneous rocks are used as fuel by igniting them.
B. Sedimentary rocks can never change into metamorphic rocks or magma.
C. Igneous rocks can change into sedimentary rocks over a long period of time.
D. Magma can form sedimentary rocks on cooling.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is Igneous rocks can change into sedimentary rocks over a long period of time..
Key Points
- Igneous rocks are formed from the solidification of magma or lava.
- Over a long period, weathering and erosion can break down igneous rocks into smaller particles.
- These particles can be transported by natural agents like wind, water, and ice and deposited in layers.
- Over time, the accumulated layers are compacted and cemented to form sedimentary rocks.
- This process is part of the rock cycle, which describes the transformation of rock types over geological time scales.
Additional Information
- Igneous rocks
- These rocks are not used as fuel because they do not contain combustible materials.
- Examples include granite, basalt, and pumice.
- Sedimentary rocks
- These rocks can transform into metamorphic rocks under high pressure and temperature.
- They can also melt into magma if subjected to extreme conditions.
- Examples include limestone, sandstone, and shale.
- Magma
- When magma cools and solidifies, it forms igneous rocks, not sedimentary rocks.
- Magma is a molten rock found beneath the Earth's surface.
Last updated on May 28, 2025
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