Every language has its own rich vocabulary for describing weather because people have observed and lived with these conditions for generations. This is an open-ended, activity-based question — students are expected to talk to family members and note down local-language weather words. Here are sample answers in a few Indian languages to help you get started:

• Hindi: गर्मी (garmi – hot), सर्दी/ठंड (sardi/thand – cold), उमस (umas – humid/mugginess), बूँदाबाँदी (boondabaandi – drizzle), तेज़ हवा (tez hawa – strong wind)
• Marathi: ऊन (un – sunny/hot), गार (gaar – cool), दमट (damat – humid)
• Tamil: வெப்பம் (veppam – heat), குளிர் (kulir – cold), ஈரப்பதம் (eerapatham – humidity)
• Bengali: গরম (gorom – hot), ঠান্ডা (thanda – cold), স্যাঁতস্যাঁতে (shyantshyante – damp/humid)

Tip for the activity: Ask grandparents or elders at home which weather words they use — many regional words also describe seasonal transitions, like the word for the first monsoon shower, which don’t have exact one-word English equivalents.

Krishnan cannot rely on the word “chilly” alone, because it means different things in different climates. Chennai rarely gets very cold, so a temperature that feels chilly there might feel warm or pleasant in Kashmir, which is used to much lower temperatures.

The only reliable way for Krishnan to communicate exactly how cold it is, is to give Amir the actual temperature reading in degrees Celsius (or Fahrenheit), measured with a thermometer — for example, “It is 20°C in Chennai right now.” Because the Celsius/Fahrenheit scale is a common, standard measure, Amir can understand precisely how cold it is, even though his personal sense of “cold” is different from Krishnan’s.

This shows why we need standard units and instruments to measure weather elements — personal words like “chilly” or “hot” are subjective, but a number on a thermometer means the same thing everywhere.

Measuring weather precisely helps in many everyday and large-scale decisions. Some reasons include:

• Daily planning: Deciding what clothes to wear, whether to carry an umbrella, or whether it’s a good day for outdoor sports.
• Agriculture: Farmers decide when to sow seeds, irrigate, or harvest crops based on expected rainfall and temperature.
• Travel and transport: Airlines, ships, and railways need accurate forecasts to avoid delays or accidents caused by storms, fog, or heavy rain.
• Disaster preparedness: Advance warning of cyclones, floods, or heat waves allows people and governments to evacuate areas or stock up on supplies, saving lives.
• Events and construction: Outdoor events, sports tournaments, and construction schedules are planned around expected weather.
• Health: Doctors and hospitals prepare for heat-stroke or cold-related illnesses when extreme weather is forecast.

This is a field activity meant for students to interview elders. Here are some traditional weather-prediction signs commonly reported across India that can serve as a sample answer:

• Ants carrying their eggs to higher ground before heavy rain.
• Frogs croaking loudly before rainfall.
• Birds flying low signal an approaching storm.
• A red sky at sunset is often said to predict fair weather the next day, while a red sky at sunrise may predict rain.
• Regional saying (Hindi belt): “काले बादल घिर आए, बारिश का संकेत लाए” (Dark clouds gathering bring the sign of rain.)
• Regional saying (South India, on the monsoon): Farmers observe the flowering of certain trees (like the Indian laburnum) as a traditional sign that the monsoon is near.

Tip: When you do this activity yourself, write down the exact words your grandparents or neighbours use — this preserves valuable local, traditional knowledge.

Answer: Maximum = 32°C, Minimum = 14°C, Range = 18°C.

Since Amir lives in Kashmir, where winters bring much lower temperatures (often close to 0°C or below), 20°C would feel quite mild or even warm to him — not cold at all.

So Amir’s likely reaction would be surprise or amusement — something like, “20°C is cold for you? That’s a pleasant, warm day for us here in Kashmir!” This shows that even though both now use the same standard number (20°C), how a temperature feels still depends on what a person is used to — but at least now they both understand the exact same physical value, which was the whole point of using a common measurement scale.

The sun is the ultimate source of energy that drives the entire water cycle, which is why rain can be said to “arise” from it:

1. The sun’s heat causes water from oceans, rivers, and lakes to evaporate into water vapour.
2. This warm, moist air rises into the atmosphere and cools down as it goes higher.
3. The cooling water vapour condenses into tiny water droplets, forming clouds.
4. When these droplets combine and become heavy enough, they fall back to Earth as rain.

So without the sun’s heat, there would be no evaporation, no clouds, and therefore no rain — the sun is truly the engine behind the entire water cycle and, ultimately, all weather.

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Why it matters: A sudden drop in atmospheric pressure often signals the approach of a storm, cyclone, or other severe weather (called a “depression” or “low-pressure system”). Measuring pressure changes therefore gives an early warning of dangerous weather before it visibly arrives.

Who uses it:

• Meteorologists — to detect and track depressions, storms, and cyclones, and issue forecasts/warnings.
• Pilots and airlines — aircraft altimeters use air pressure to calculate altitude, and pressure changes affect flight safety.
• Sailors and fishermen — to know if a storm is approaching the sea before setting out.
• Mountaineers and trekkers — since pressure (and oxygen availability) drops sharply at high altitude, this affects planning and acclimatisation.
• Farmers — pressure changes help anticipate rain, which affects sowing and harvesting decisions.

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Many plants (such as dandelions, milkweed, and cotton) have developed light, feathery or fluffy seeds specially adapted to be carried by the wind — this is called wind dispersal.

If there was no wind, these seeds would simply drop straight to the ground right beneath the parent plant. This would mean:

• All the new seedlings would grow crowded together in one spot, competing heavily for sunlight, water, and nutrients.
• The plant species would not be able to spread to new areas, reducing its chances of survival if that one spot became unfavourable (e.g., due to disease, fire, or lack of resources).
• Over time, the plant might struggle to colonise new habitats, reducing biodiversity in the wider area.

So wind plays a vital ecological role in helping plants reproduce and spread across a wider area.

Kochi is likely to have much higher humidity than Jaipur. Kochi is a coastal city, so there is a huge surface of the Arabian Sea nearby from which water constantly evaporates into the air, keeping the atmosphere moist. Jaipur, on the other hand, is located inland in a semi-arid region of Rajasthan, far from any large water body, so its air holds far less water vapour.

How to know for sure: A guess based on location isn’t proof — we need to actually measure it. This is done using an instrument called a hygrometer, which gives the exact relative humidity (as a percentage) of the air at a given place and time.

Comparing Kochi and Mangaluru: Since both are coastal cities, we cannot simply guess which is more humid — we would need to place hygrometers (or use data from weather stations/IMD records) in both cities and compare their actual relative-humidity readings, ideally recorded at the same time of day and averaged over a similar period, to get a fair and accurate comparison.

This depends on how easily water can evaporate into air that already contains water vapour.

Sample list of situations, grouped into categories:

• Daily life: Choosing clothes, carrying an umbrella, planning a picnic or outdoor event.
• Agriculture: Deciding sowing/harvesting time, protecting crops from frost, hail, or drought.
• Transport & travel: Flight schedules, ship routes, train safety during fog or storms.
• Disaster management: Evacuating coastal areas before a cyclone, warning fishermen, flood preparedness.
• Health: Preparing for heat waves or cold waves that affect vulnerable people.
• Sports & events: Rescheduling outdoor matches, concerts, or festivals.
• Construction & infrastructure: Scheduling work around expected heavy rain or high winds.

Counting the above, students should be able to identify at least 5–7 broad categories — this is exactly the kind of variety expected in the discussion.

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Note: Since exact colour zones can shift slightly depending on how the map is viewed, students should verify shading region-by-region on their own printed copy — the reasoning method above (matching icon → hazard, colour → severity) is what matters for the answer.