Hydrosphere
Gujarat Board · Class 11 · Geography
Summary of Hydrosphere for Gujarat Board Class 11 Geography. Key concepts, important points, and chapter overview.
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Overview
The Hydrosphere represents all water bodies on Earth's surface, covering approximately 71% of our planet. This is why Earth is called the 'Water Planet'. Water exists in three forms - solid, liquid, and gaseous - and constantly moves through various processes. Understanding the hydrosphere is crucia
Key Concepts
The continuous process where ocean water
The continuous process where ocean water evaporates due to solar heat, forms clouds, precipitates as rain, and returns to oceans through rivers. Groun
Four major features
Four major features: Continental Shelf (up to 200m depth, 8% of ocean floor), Continental Slope (steep transition zone), Abyssal Plains (vast deep pla
Average surface temperature is 17°C globally
Average surface temperature is 17°C globally. Affected by solar angle, geographical location, winds, and ocean currents. Temperature decreases by 0.5°
Average salinity is 35‰ (35 grams
Average salinity is 35‰ (35 grams salt per 1000 grams seawater). Affected by evaporation, freshwater addition from rivers, melting glaciers, and ocean
Systematic rise and fall of sea
Systematic rise and fall of sea surface due to gravitational forces of sun and moon. Spring tides occur during full/new moon, Neap tides during quarte
Learning Objectives
- Understand the water cycle and its significance in water distribution
- Analyze the relief features of ocean floors and their characteristics
- Examine factors affecting sea water temperature and their global impacts
- Study salinity of ocean water and factors influencing it
- Explore various movements of sea water including waves, tides, and currents
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