Geography: Earth, India, Haryana and World Geography

Overview

Geography forms a substantial portion of the Social Studies paper in HTET Level 2 (Classes VI-VIII). This subject tests your understanding of physical features, climate patterns, resources, and human-environment interactions at three scales: global, national, and state (Haryana). Questions typically range from factual recall (rivers, mountains, districts) to application-based items (interpreting maps, understanding climate-agriculture relationships).

For HTET success, you must master India's physical divisions and drainage systems, Haryana's specific geographical features, and fundamental concepts about Earth's structure and motions. The examiner expects clarity on how geography influences livelihoods, settlements, and resource distribution. Around 15-20% of Social Studies questions come from geography, making it a high-scoring area if prepared systematically.

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Key Concepts

• **Earth's Structure**: The Earth has three main layers—crust (outermost, 5-70 km thick), mantle (middle, semi-molten), and core (innermost, iron-nickel). The lithosphere includes the crust and upper mantle.

• **Motions of Earth**: Rotation (on its axis, causes day-night, 24 hours) and Revolution (around the Sun, causes seasons, 365¼ days). Earth's axial tilt of 23.5° creates seasons.

• **Latitudes and Longitudes**: Latitudes are horizontal lines measuring distance from equator (0° to 90° N/S). Longitudes are vertical lines from Prime Meridian (0° to 180° E/W). India lies between 8°4'N to 37°6'N latitude and 68°7'E to 97°25'E longitude.

• **India's Physical Divisions**: Five major divisions—Himalayan Mountains (north), Northern Plains (Indo-Gangetic), Peninsular Plateau (Deccan), Coastal Plains (east and west), and Islands (Andaman-Nicobar, Lakshadweep).

• **Drainage Systems**: Himalayan rivers (Ganga, Brahmaputra—perennial, snow-fed) versus Peninsular rivers (Godavari, Krishna, Narmada—rain-fed). West-flowing rivers drain into Arabian Sea; east-flowing into Bay of Bengal.

• **Haryana's Location**: Landlocked state in northern India, lies between 27°39'N to 30°35'N and 74°28'E to 77°36'E. Bordered by Punjab, Himachal Pradesh, Uttarakhand, Uttar Pradesh, Rajasthan, and surrounds Delhi on three sides.

• **Climate of India**: Monsoon type climate with four seasons—Winter (Dec-Feb), Summer (Mar-May), Advancing Monsoon (Jun-Sep), Retreating Monsoon (Oct-Nov).

• **Natural Vegetation**: Tropical Evergreen (heavy rainfall areas), Tropical Deciduous (most widespread in India), Thorn Forests (arid regions), Montane Forests (Himalayas), Mangroves (deltas).

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Formulas / Key Facts

| Category | Key Facts | |----------|-----------| | **Earth Data** | Equatorial circumference: 40,075 km; Polar circumference: 40,008 km; Earth's age: ~4.5 billion years | | **India Area** | 32,87,263 sq km (7th largest country); 2.4% of world's land area | | **Highest Peak** | K2/Godwin-Austen (8,611 m) in India; Kanchenjunga (8,586 m) entirely within India | | **Longest River** | Ganga (2,525 km in India); Godavari is longest Peninsular river (1,465 km) | | **Haryana Area** | 44,212 sq km; 22 districts; Capital: Chandigarh (shared with Punjab) | | **Haryana Rivers** | Yamuna (eastern boundary), Ghaggar (seasonal, north-west), Markanda, Saraswati (seasonal) | | **Haryana Soil Types** | Alluvial (north-east), Sandy (south-west Aravalli region), Saline-alkaline patches | | **Important Passes** | Khyber, Bolan (Pakistan border region); Shipki La, Nathu La, Bomdi La (India-China/Tibet) | | **Tropic of Cancer** | Passes through 8 Indian states: Gujarat, Rajasthan, Madhya Pradesh, Chhattisgarh, Jharkhand, West Bengal, Tripura, Mizoram |

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Worked Examples

**Example 1: Map-based Question** *Which river forms the eastern boundary of Haryana?*

**Solution**:

• Identify Haryana's position: north-western India
• Eastern neighbour is Uttar Pradesh
• The river separating them is **Yamuna**
• Yamuna flows from north to south along Haryana's eastern border

**Answer**: Yamuna

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**Example 2: Physical Feature Identification** *The Western Ghats are higher than the Eastern Ghats. What geographical consequence does this have?*

**Solution**:

• Western Ghats: Average height 900-1600 m, continuous range
• Eastern Ghats: Average height 600 m, discontinuous, cut by rivers
• Consequence 1: Western Ghats block southwest monsoon, causing heavy rainfall on western coast (windward side)
• Consequence 2: Most Peninsular rivers (Godavari, Krishna, Kaveri) originate in Western Ghats and flow eastward
• Consequence 3: Rain shadow region exists east of Western Ghats (parts of Karnataka, Tamil Nadu interior)

**Answer**: Western Ghats cause orographic rainfall on western coast, and most Peninsular rivers flow west to east.

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**Example 3: Haryana Geography** *Why does south-western Haryana receive less rainfall than north-eastern Haryana?*

**Solution**:

• South-western Haryana (Bhiwani, Mahendragarh, Rewari): Part of Aravalli foothills and semi-arid zone
• North-eastern Haryana (Yamunanagar, Ambala, Kurukshetra): Closer to Shivalik foothills
• Monsoon winds from Bay of Bengal reach north-east first with more moisture
• By the time winds reach south-west, moisture content reduces
• South-west also borders Rajasthan's Thar Desert region

**Answer**: Distance from moisture source (Bay of Bengal monsoon) and proximity to Thar Desert cause lower rainfall in south-western Haryana.

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Common Mistakes

• **Confusing Rotation and Revolution** → Rotation = spinning on axis (day-night); Revolution = orbiting Sun (seasons). Remember: "Rotate on spot, Revolve around."

• **Mixing up Western and Eastern Ghats rivers** → Most major Peninsular rivers flow EASTWARD (originate in Western Ghats). Only Narmada and Tapi flow westward through rift valleys.

• **Assuming Haryana has perennial rivers** → Except Yamuna (perennial, Himalayan origin), most Haryana rivers like Ghaggar, Markanda are seasonal/monsoon-fed.

• **Forgetting Tropic of Cancer states** → Students often miss Jharkhand or include wrong states. Use mnemonic: "GRMCJWTM" (Gujarat, Rajasthan, MP, Chhattisgarh, Jharkhand, WB, Tripura, Mizoram)—west to east order.

• **Confusing alluvial plains location** → Haryana's alluvial soil is in the NORTH-EAST (Yamuna belt), not the sandy south-west (Aravalli region).

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Quick Reference

• **Earth's tilt**: 23.5° — causes seasons during revolution around Sun

• **India's Standard Meridian**: 82°30'E passes through Mirzapur (UP); IST = GMT + 5:30

• **Haryana**: 22 districts, landlocked, semi-arid climate, Yamuna only perennial river

• **Monsoon months**: June to September (southwest monsoon brings 75% of India's rainfall)

• **Highest point in Haryana**: Karoh Peak (1,514 m) in Morni Hills, Panchkula district

• **India's largest state by area**: Rajasthan; by population: Uttar Pradesh