Work of River, underground water, glacier, winds and sea waves
Telangana Open School (TOSS) · Class 12 · Geography
Complete topic list for Work of River, underground water, glacier, winds and sea waves in Telangana Open School (TOSS) Class 12 Geography. Key concepts, sub-topics, and what to focus on for board exams.
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Topics in Work of River, underground water, glacier, winds and sea waves
Work of River
- Rivers perform three main functions: erosion, transportation, and deposition.
- River erosion occurs through corrosion (abrasion), solution, hydraulic action, and attrition.
- Transportation happens via traction, saltation, suspension, and solution.
Work of Underground Water
- Rainwater that seeps underground is called underground water.
- Permeable rocks (like sandstone) allow water to pass; impermeable rocks (like clay) do not.
- Water table is the upper surface of saturated zone; it fluctuates with seasons.
Work of Glacier
- A glacier is a moving mass of ice formed from compacted snow, moving slowly under its own weight.
- Two types: Continental glaciers (vast ice sheets in Antarctica, Greenland) and Valley glaciers (in mountain valleys).
- Snowline is the altitude above which snow never fully melts.
Work of Winds
- Wind is a powerful agent in arid and semi-arid regions with little vegetation.
- Wind erosion includes abrasion, attrition, and deflation.
- Mushroom rocks form due to differential erosion (softer base eroded more).
Key Concepts
Central concept: Agents of Gradation
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