Questions & Answers - CBSE Class 9 (60 from NCERT PDF)
20 Short (2M), 20 Medium (4M), 20 Long (8M) based on PDF exercises/content.
Short Questions (2 Marks Each) - 20 Total
1. Highest rainfall place? (PDF p.35, NCERT Q1(i))
Answer: Mawsynram.
2. Summer winds north plains? (PDF p.35, NCERT Q1(ii))
Answer: Loo.
3. Monsoon arrival India? (PDF p.35, NCERT Q1(iii))
Answer: Early June.
4. Cold season characteristic? (PDF p.35, NCERT Q1(iv))
Answer: Warm days cold nights.
5. Monsoon derived from? (PDF p.26)
Answer: Arabic 'mausim'.
6. Coriolis also known? (PDF p.28)
Answer: Ferrel's Law.
7. Mahawat? (PDF p.28)
Answer: Winter rain.
8. Loo? (PDF p.30)
Answer: Hot dry winds.
9. Kaal Baisakhi? (PDF p.30)
Answer: West Bengal storms.
10. Mango showers? (PDF p.30)
Answer: Pre-monsoon Kerala/Karnataka.
11. Wettest place? (PDF p.30)
Answer: Mawsynram.
12. October heat? (PDF p.32)
Answer: High temperature/humidity.
13. Coromandel rain from? (PDF p.32)
Answer: Depressions/cyclones.
14. Low rainfall why? (PDF p.32)
Answer: Rain shadow.
15. Monsoon unifying how? (PDF p.32)
Answer: Rhythmic seasons.
16. Tropic Cancer? (PDF p.27)
Answer: Rann Kuchchh-Mizoram.
17. Himalayas height? (PDF p.27)
Answer: 6000 m.
18. Drass temperature? (PDF p.26)
Answer: -45°C.
19. Mawsynram rainfall? (PDF p.30)
Answer: Highest world.
20. Leh precipitation? (PDF p.32)
Answer: Low.
Medium Questions (4 Marks Each) - 20 Total
1. Controls climate India? (PDF p.35, NCERT Q2(i))
Answer: Six controls: latitude (solar energy variation), altitude (temperature decrease higher), pressure/wind (temperature/rainfall pattern), distance sea (continentality extremes), ocean currents (moderate coastal), relief (mountains barrier precipitation; leeward dry).
2. India monsoon why? (PDF p.35, NCERT Q2(ii))
Answer: Seasonal wind reversal: Winter northeast trades dry; summer southwest wet from ocean. Pressure changes: Winter high north; summer low interior attract moist winds.
3. Highest diurnal range where/why? (PDF p.35, NCERT Q2(iii))
Answer: Thar Desert; day 50°C, night 15°C. Continentality far sea, no moderating influence; arid conditions.
4. Malabar coast rainfall winds? (PDF p.35, NCERT Q2(iv))
Answer: Southwest monsoon; windward Western Ghats >250 cm. Moist ocean winds forced up, cool, condense.
5. Monsoon break? (PDF p.35, NCERT Q2(v))
Answer: Wet/dry spells; trough axis moves north/south. Plains good rain when over; Himalayas dry spells plains, heavy mountain rain.
6. Monsoon unifying why? (PDF p.35, NCERT Q2(vi))
Answer: Rhythmic seasons, water agriculture; binds north-south/east-west. Uncertainties typical; revolves landscape, life, festivals.
7. Rainfall decrease east-west north? (PDF p.35, NCERT Q3)
Answer: Monsoon weakens west; moisture depletes. Bay Bengal branch loses moisture progressively.
8. Wind reversal subcontinent? (PDF p.36, NCERT Q4(i))
Answer: Pressure changes: Winter high north northeast; summer low attract southwest. Coriolis deflects.
9. Rainfall bulk few months? (PDF p.36, NCERT Q4(ii))
Answer: Southwest monsoon Jun-Sep; brings most rain. Retreating Oct-Nov some parts.
10. Tamil Nadu winter rain? (PDF p.36, NCERT Q4(iii))
Answer: Northeast trades sea-land; retreating monsoon depressions/cyclones.
11. Eastern delta cyclones? (PDF p.36, NCERT Q4(iv))
Answer: Retreating low Bay Bengal; cyclonic depressions Andaman cross east coasts.
12. Rajasthan/Gujarat drought? (PDF p.36, NCERT Q4(v))
Answer: Arid; monsoon weak/scanty; high variability low rainfall.
13. Regional variations climate? (PDF p.36, NCERT Q5)
Answer: Temperature: Desert hot, Himalayas cold; Precipitation: Northeast wet, west dry. Controls latitude, relief, distance sea cause.
14. Cold season weather/characteristics? (PDF p.36, NCERT Q6)
Answer: Clear sky, low temperature/humidity; northeast trades dry; mahawat rabi; snow mountains.
15. Monsoon rainfall characteristics/effects? (PDF p.36, NCERT Q7)
Answer: Southwest Jun-Sep; heavy windward, shadow less; breaks; floods/droughts; agriculture depends.
16. Continentality? (PDF p.27)
Answer: Extreme weather interior; hot summers cold winters far sea.
17. Jet streams? (PDF p.28)
Answer: Upper air circulation; influence monsoon.
18. El Nino? (PDF p.28, implied)
Answer: Warm current affects monsoon.
19. October heat? (PDF p.32)
Answer: Oppressive high temperature/humidity transition.
20. Variability rainfall? (PDF p.32)
Answer: High low areas; drought/flood prone.
Long Questions (8 Marks Each) - 20 Total
1. Highest rainfall place? (PDF p.35, NCERT Q1(i))
Answer: The place that receives the highest rainfall in the world is Mawsynram. Located in the southern ranges of the Khasi Hills in Meghalaya, it has the highest average rainfall due to its position where the monsoon winds are forced to rise over the hills, leading to orographic precipitation. This contrasts with options like Silchar, Cherrapunji (nearby but slightly less), or Guwahati (lower). Mawsynram's rainfall is part of the advancing monsoon's heavy precipitation in the northeast, influenced by relief features. In exams, explain the mechanism: moist southwest winds from the Bay of Bengal branch hit the hills, cool, and condense, causing over 400 cm annually. This highlights India's regional rainfall variations and the role of monsoons in creating wettest spots.
2. Summer winds north plains? (PDF p.35, NCERT Q1(ii))
Answer: The wind blowing in the northern plains in summers is known as Loo. These are strong, gusty, hot, dry winds that blow during the day in north and northwestern India, sometimes continuing into the evening. Direct exposure can be fatal. Unlike Kaal Baisakhi (thunderstorms in West Bengal), Trade Winds (general circulation), Loo is a local phenomenon in the hot weather season (March-May) due to low pressure in the northwest attracting hot continental winds. Discuss its effects: lowers humidity, causes heat strokes, but dust storms following may bring relief with light rain. This exemplifies regional climatic variations in India, influenced by pressure systems and continentality.
3. Monsoon arrival India? (PDF p.35, NCERT Q1(iii))
Answer: Monsoon arrives in India approximately in early June. The southwest monsoon intensifies with low pressure over northern plains attracting trade winds from the southern hemisphere, crossing the equator and entering as southwest winds. This contrasts with early May (pre-monsoon showers), early July/August (already arrived). The arrival covers the country in about a month, except extreme northwest. Explain the process: Winds blow at 30 km/h, bring abundant moisture, leading to heavy rainfall starting from Kerala (mango showers) and advancing north. Discuss importance for agriculture and uncertainties like breaks or delays affecting farming schedules.
4. Cold season characteristic? (PDF p.35, NCERT Q1(iv))
Answer: One of the following characterises the cold weather season in India: Warm days and cold nights. From mid-November to Feb in north, with Dec-Jan coldest, temperatures decrease south to north (Chennai 24-25°C, plains 10-15°C). Frost common north, snowfall higher Himalayas. Unlike warm days/nights or cool/cold all, this diurnal range is due to clear skies and low humidity. Northeast trades blow land to sea, dry season mostly; Tamil Nadu gets rain sea to land. Western disturbances bring mahawat for rabi. Peninsular no marked cold due sea. Highlight moderating influences and regional variations.
5. Controls climate India? (PDF p.35, NCERT Q2(i))
Answer: The controls affecting the climate of India are latitude, altitude, pressure and wind system, distance from the sea, ocean currents, and relief features. Latitude: Tropic Cancer divides tropical south and subtropical north. Altitude: Himalayas block cold winds, milder winters. Pressure/winds: Monsoon reversal due seasonal pressure changes. Distance sea: Continentality causes extremes interior. Ocean currents: Onshore warm/cold moderate coasts. Relief: Mountains cause orographic rain, shadow areas dry. These interact for monsoon type; examples like Thar desert or wet northeast illustrate. Discuss how they vary temperature/precipitation regionally/seasonally.
6. India monsoon why? (PDF p.35, NCERT Q2(ii))
Answer: India has a monsoon type of climate due to seasonal reversal in wind direction. Winter: Northeast trades from subtropical high blow south, deflected right by Coriolis, dry as over land. Summer: Low pressure interior attracts southeast trades from southern ocean, cross equator become southwest, bring moisture/rain. Pressure unique: Winter high north Himalayas; summer low northwest/interior. This reversal defines monsoon (mausim: season). Despite unity, variations; unifies country. Contrast with arid if no reversal; discuss Coriolis/Ferrel's Law role.
7. Highest diurnal range where/why? (PDF p.35, NCERT Q2(iii))
Answer: The part of India that experiences the highest diurnal range of temperature is the Thar Desert in Rajasthan, where day temperatures may rise to 50°C and drop to near 15°C the same night. This is due to continentality: far from sea, no moderating influence, leading to rapid heating during day and cooling at night in arid conditions. Contrast with coastal areas like Andaman/Nicobar or Kerala with minimal range due sea breeze. This highlights distance from sea control; examples like Pahalgam or islands show variations.
8. Malabar coast rainfall winds? (PDF p.35, NCERT Q2(iv))
Answer: The winds that account for rainfall along the Malabar coast are the southwest monsoon winds. These moist winds from the Arabian Sea branch hit the windward Western Ghats, forced to rise, cool, and condense, causing heavy orographic rainfall >250 cm. This occurs during advancing monsoon (Jun-Sep). Contrast with leeward Deccan in shadow getting less. Relief plays key role; discuss branch paths and importance for Kerala/Karnataka agriculture.
9. Monsoon break? (PDF p.35, NCERT Q2(v))
Answer: Monsoons refer to seasonal wind reversal during a year. 'Break' in monsoon means wet and dry spells where rains occur few days interspersed with rainless intervals. Related to monsoon trough movement: over plains good rain; shifts Himalayas longer dry plains, heavy mountain rain/floods. This uncertainty varies intensity/frequency/duration; causes floods one part, droughts another; irregular arrival/retreat disturbs farming. Depressions Bay Bengal influence amount/duration.
10. Monsoon unifying why? (PDF p.35, NCERT Q2(vi))
Answer: The monsoon is considered a unifying bond because it provides a rhythmic cycle of seasons across India, binding north-south and east-west. Himalayas protect from cold, enabling uniform higher temperatures; peninsula moderate sea. Despite variations, monsoon alterations and uncertainties are typical, influencing landscape, flora/fauna, agriculture, river valleys, people's lives including festivities. Eagerly awaited arrival sets agricultural motion; water unites as single valley unit. This perceptible influence lends climatic unity.
11. Rainfall decrease east-west north? (PDF p.35, NCERT Q3)
Answer: The rainfall decreases from the east to the west in Northern India because the Bay of Bengal branch of the southwest monsoon moves parallel to the Himalayas, losing moisture progressively as it advances west. Starting heavy in West Bengal/Bihar, it weakens by Punjab/Rajasthan due to distance from moisture source and depletion. Arabian Sea branch focuses west coast/Ghats; northern plains rely on Bay branch. This gradient influenced by pressure/winds; results scanty west, variability high causing droughts.
12. Wind reversal subcontinent? (PDF p.36, NCERT Q4(i))
Answer: Seasonal reversal of wind direction takes place over the Indian subcontinent due to pressure changes and Coriolis force. Winter: High pressure north Himalayas causes northeast trades blow south, deflected right, dry over land. Summer: Low pressure interior/northwest from heat causes reversal; high southern Indian Ocean pushes air southeast, crosses equator turns right (Coriolis) to southwest, moist over ocean. This unique system makes India monsoon; without, arid. Discuss Ferrel's Law and impacts on rainfall.
13. Rainfall bulk few months? (PDF p.36, NCERT Q4(ii))
Answer: The bulk of rainfall in India is concentrated over a few months because it is brought by the southwest monsoon during June to September. These winds carry moisture from warm oceans, leading to widespread rain over mainland. Pre-monsoon scattered; retreating Oct-Nov some coasts like Tamil Nadu from northeast/depressions. Most parts dry rest year. This seasonal nature due wind reversal/pressure; uncertainties like breaks affect distribution. Vital for agriculture but causes floods/droughts.
14. Tamil Nadu winter rain? (PDF p.36, NCERT Q4(iii))
Answer: The Tamil Nadu coast receives winter rainfall from the northeast trade winds blowing sea to land during cold season, and retreating monsoon with cyclonic depressions/cyclones from Bay Bengal in Oct-Nov. While most India dry winter (northeast land-sea), Tamil Nadu/Coromandel gets bulk this period. Depressions Andaman cross east coasts heavy destructive rain. This contrasts southwest summer rain elsewhere; sea moderates no cold season but rain variation.
15. Eastern delta cyclones? (PDF p.36, NCERT Q4(iv))
Answer: The delta region of the eastern coast is frequently struck by cyclones because during retreating monsoon (Oct-Nov), low pressure shifts to Bay Bengal, forming cyclonic depressions over Andaman Sea. These cross east coasts (Godavari, Krishna, Kaveri deltas) with heavy rain/winds, often destructive causing damage life/property. Thickly populated; strike Odisha/WB/Bangladesh too. Tropical cyclones intensity/frequency determine; contrast advancing monsoon depressions.
16. Rajasthan/Gujarat drought? (PDF p.36, NCERT Q4(v))
Answer: Parts of Rajasthan, Gujarat and the leeward side of the Western Ghats are drought-prone due to scanty rainfall <60 cm, high variability in low precipitation areas. Rajasthan arid as monsoon weakens west; Arabian branch doesn't reach far inland. Gujarat parts similar; leeward Ghats rain shadow from southwest winds. Continentality, pressure systems cause; prone droughts unlike flood-liable high rain areas. Discuss impacts on agriculture, need conservation.
17. Regional variations climate? (PDF p.36, NCERT Q5)
Answer: Describe the regional variations in the climatic conditions of India with the help of suitable examples. Temperature: Rajasthan desert 50°C summer, Drass -45°C winter; Pahalgam 20°C summer, Thiruvananthapuram 22°C winter. Diurnal: Thar high range, Kerala minimal. Precipitation: Meghalaya >400 cm, Ladakh <10 cm; June-Sep most, Tamil Nadu Oct-Nov. Coastal less contrast, interior more; rainfall east-west decrease Northern Plains. Examples: Houses Rajasthan thick walls/flat roofs heat; sloping roofs Goa rain; stilts Assam floods. Controls cause variations.
18. Cold season weather/characteristics? (PDF p.36, NCERT Q6)
Answer: Give an account of weather conditions and characteristics of the cold season. Mid-Nov-Feb north; Dec-Jan coldest. Temperature south-north: Chennai 24-25°C, plains 10-15°C. Warm days cold nights; frost north, snow Himalayas. Northeast trades dry; Tamil Nadu rain. Feeble high north; winds Ganga west/northwest. Clear sky, low temperature/humidity, feeble winds. Western disturbances mahawat rabi, snow mountains. Peninsular no cold sea moderates. Influences agriculture like rabi cultivation.
19. Monsoon rainfall characteristics/effects? (PDF p.36, NCERT Q7)
Answer: Give the characteristics and effects of the monsoon rainfall in India. Characteristics: Southwest Jun-Sep; heavy windward Ghats >250 cm, northeast max Mawsynram; Ganga east-west decrease; breaks wet/dry; uncertainties intensity/frequency/duration; depressions determine amount. Effects: Total weather change; agriculture depends (kharif); floods devastate plains (Himalayan catchment heavy rain); droughts dry spells; irregular disturbs farming millions. Unifying bond rhythms life.
20. Houses variations why? (PDF p.27)
Answer: Why the houses in Rajasthan have thick walls and flat roofs? Thick walls insulate heat; flat roofs collect water arid. Tarai/Goa/Mangalore sloping roofs heavy rain drain. Assam stilts floods/marshy. Variations reflect climate: hot dry Rajasthan, wet coastal, flood-prone northeast. Relief too: hills cooler. Examples show adaptation to temperature/precipitation.
Practice Tip: 2M: 2min; 4M: 5min; 8M: 12min; use PDF maps/figures.
