Q1. What is weather?

A1. Weather is the short-term condition of the atmosphere at a place.

Q2. What is climate?

A2. Climate is the long-term average pattern of weather in a region.

Q3. Give two elements of weather.

A3. Temperature and rainfall (also wind, humidity, air pressure).

Q4. How long is weather observed for?

A4. Weather is observed over hours to days.

Q5. How is climate different from weather in one line?

A5. Weather is temporary; climate is the typical pattern over years.

Q6. What instrument measures temperature?

A6. A thermometer measures temperature.

Q7. What instrument measures rainfall?

A7. A rain gauge measures rainfall amount.

Q8. What does a hygrometer measure?

A8. A hygrometer measures humidity (water vapour in air).

Q9. What unit is temperature commonly measured in?

A9. Degrees Celsius (°C).

Q10. What instrument measures air pressure?

A10. A barometer measures air pressure.

Q11. How does air move between pressure areas?

A11. Air moves from high-pressure to low-pressure areas (causing wind).

Q12. What is wind?

A12. Wind is the horizontal movement of air due to pressure differences.

Q13. Which instrument measures wind speed?

A13. An anemometer measures wind speed.

Q14. What is a wind vane used for?

A14. A wind vane shows wind direction.

Q15. Define humidity briefly.

A15. Humidity is the amount of water vapour in the air.

Q16. What causes cloud formation?

A16. Rising, cooling air causes water vapour to condense into clouds.

Q17. Name three forms of precipitation.

A17. Rain, snow and hail.

Q18. What is a rain shadow?

A18. A dry area on the leeward side of mountains receiving less rain.

Q19. Which clouds bring heavy rain?

A19. Cumulonimbus clouds bring heavy rain and thunderstorms.

Q20. What does a rain gauge collect?

A20. It collects and measures the amount of rain that falls.

Q21. What information does a weather station record?

A21. Temperature, rainfall, humidity, pressure, wind and sunshine duration.

Q22. What is the use of weather satellites?

A22. Satellites observe large-scale cloud patterns and storms from space.

Q23. How does radar help meteorologists?

A23. Radar detects precipitation intensity and storm movement.

Q24. What instrument measures sunshine duration?

A24. A sunshine recorder measures hours of bright sunshine.

Q25. Why do meteorologists use weather maps?

A25. Weather maps show pressure systems, fronts and help forecast weather.

Q26. What is an observatory?

A26. A place where scientific observations, including weather, are recorded.

Q27. Name one modern tool used for forecasting cyclones.

A27. Weather satellites and Doppler radar are used to forecast cyclones.

Q28. How do automatic weather stations help?

A28. They continuously record data with sensors and transmit information in real time.

Q29. Give a one-line definition of climate.

A29. Climate is the average pattern of weather over many years in a region.

Q30. Name two major climate types in India.

A30. Tropical wet and arid/semi-arid climates.

Q31. Which part of India has mountain climate?

A31. The Himalayan region has mountain climate.

Q32. What climate type is the Thar Desert?

A32. Arid (desert) climate.

Q33. Which regions receive heavy rainfall due to orographic effect?

A33. Western Ghats and northeastern hills receive heavy orographic rainfall.

Q34. What is a monsoon climate?

A34. A climate with distinct wet and dry seasons caused by seasonal wind reversal.

Q35. How does latitude affect climate?

A35. Latitude influences sunlight received; equatorial areas are warmer than higher latitudes.

Q36. Why are coastal areas' climates moderate?

A36. Oceans moderate temperature swings, keeping coasts milder than interiors.

Q37. When does the southwest monsoon usually arrive in India?

A37. It usually arrives in early June on the southern coast and progresses northwards.

Q38. Which monsoon brings rain to southeast India in October–December?

A38. The northeast monsoon (retreating monsoon) brings rain to southeast India.

Q39. What causes the monsoon winds to change direction?

A39. Differential heating between land and ocean causes pressure changes that reverse wind direction seasonally.

Q40. Name one factor that affects monsoon intensity.

A40. Sea surface temperatures, Himalayas, or El Niño/La Niña events affect monsoon intensity.

Q41. What is 'onset' of monsoon?

A41. Onset is when monsoon rains begin in a region, starting in Kerala and moving northwards.

Q42. What is 'withdrawal' of monsoon?

A42. Withdrawal is the retreat of monsoon rains, typically around September–October.

Q43. How does monsoon rainfall affect agriculture?

A43. Timely monsoon supports sowing and crop growth; weak monsoon causes drought and crop failure.

Q44. How does weather influence health?

A44. Weather affects disease spread (e.g., malaria increases in wet conditions, heatwaves cause heatstroke).

Q45. Name one effect of extreme rainfall events.

A45. Flooding leading to damage of crops, homes and infrastructure.

Q46. How can farmers reduce monsoon risk?

A46. Use drought-resistant crops, diversified cropping and water conservation techniques.

Q47. What is climate change in one sentence?

A47. Climate change is long-term alteration in average weather patterns, often due to human activities.

Q48. Name two greenhouse gases.

A48. Carbon dioxide (CO₂) and methane (CH₄).

Q49. Give one local action to reduce climate change.

A49. Plant trees or use less fossil fuel (e.g., ride a bicycle, use public transport).

Q50. Name one natural disaster linked to weather/climate.

A50. Cyclones (also floods, droughts and heatwaves).