Natural Regions of the World — Syllabus
ICSE · Class 9 · Geography
What Natural Regions of the World covers in ICSE Class 9 Geography: 4 topics, for the 2026-27 session. Part of the ICSE Class 9 Geography syllabus.
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Topics in Natural Regions of the World
1. Core Ideas: Climate and Climatic Regions
- Climate means the average weather conditions of temperature and rainfall over a long period, around 30 years.
- A climatic region is an area with broadly similar climatic conditions.
- Climatic boundaries are always transitional, not fixed.
2. Equatorial Region
- Also called Tropical Wet Climate or Tropical Rainforest Climate.
- Found along the Equator from 5°N to 5°S.
- Typical features occur between 2° and 8°N, while the rain belt swings between 10°N and 10°S.
3. Tropical Grasslands or Savanna or Sudan Climate
- A transitional climatic type found between equatorial forests and tropical deserts.
- Most Savanna lands lie between 10° and 20°N and S.
- Rainfall varies from 25 cm to 150 cm and is usually unreliable.
4. Tropical Deserts
- Most hot deserts lie within 15°N to 30°N and south, on western continental margins under the permanent trade wind belt.
- The Sahara desert is the only exception to this rule.
- The highest diurnal temperature range among climatic types is found here, with a highest recorded value of 41.7°C.
Key Concepts
Central concept: Natural Regions of the World
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