Understanding the Weather

Given: A list of five weather instruments and five weather elements to be matched.

Concept: Each weather instrument is designed to measure one specific element of weather.

Matching:

| Instrument | Element |
|---|---|
| (1) Hygrometer | (d) Humidity |
| (2) Anemometer | (c) Wind direction and speed |
| (3) Barometer | (b) Atmospheric pressure |
| (4) Thermometer | (e) Temperature |
| (5) Rain gauge | (a) Precipitation |

Brief Justification:
- A Hygrometer measures the amount of moisture (humidity) in the air.
- An Anemometer measures wind speed and can also indicate wind direction.
- A Barometer measures atmospheric (air) pressure.
- A Thermometer measures temperature.
- A Rain gauge measures the amount of precipitation (rainfall/snowfall).

Given:
- Destination: Mumbai, Month: June
- Forecast: Temperature = $29°C$, Humidity = $84\%$

Concept: Humidity refers to the amount of water vapour present in the air. High humidity (above $70\%$) makes the air feel much hotter and stickier than the actual temperature because sweat does not evaporate easily from the body, reducing the body's natural cooling mechanism. June in Mumbai also falls in the pre-monsoon/early monsoon period, so rainfall is likely.

Advice to Jyotsna:

1. Pack light, loose, and breathable clothing — Cotton or linen clothes in light colours are ideal because they absorb sweat and allow air circulation, helping the body stay cool despite the high humidity.

2. Avoid synthetic or heavy fabrics — These trap heat and moisture, making the sticky feeling worse.

3. Carry a light raincoat or a compact umbrella — June marks the onset of the South-West Monsoon in Mumbai, so sudden heavy showers are very likely.

4. Stay hydrated — High humidity causes the body to lose more fluids; carrying a water bottle is important.

5. Avoid dark-coloured clothes — Dark colours absorb more heat, which will add to the discomfort in hot and humid conditions.

Conclusion: At $29°C$ with $84\%$ humidity, the weather will feel very hot and muggy. Light cotton clothes and rain gear are the most practical choices for Jyotsna's trip.