NCERT Solutions for Class 7 Social Science
Geography Chapter 2 Inside Our Earth
Question 1(v) Page No. 10
NCERT Academic Session 2023-2024
What do you mean by a rock cycle?
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Rock Cycle Explanation:
1. Formation:
– Igneous rocks form from cooled magma/lava.
– Sedimentary rocks form from sediment deposition and compaction.
– Metamorphic rocks form from existing rocks altered by heat/pressure.
2. Transformation:
– Igneous rocks can weather into sediments.
– Sediments can compact to form sedimentary rocks.
– Any rock type can undergo metamorphism to become metamorphic rocks.
3. Recycling:
– Melting and solidification form new igneous rocks.
– Weathering and erosion form sediments.
– Metamorphism creates new metamorphic rocks.
The rock cycle depicts how rocks transform between types through geological processes, demonstrating Earth’s dynamic nature.