NCERT Class 7 Social Science Chapter 2 Understanding the Weather

NCERT Class 7 Social Science Chapter 2 Understanding the Weather Solutions English Medium to each chapter is provided in the list so that you can easily browse through different chapters NCERT Class 7 Social Science Chapter 2 Understanding the Weather and select need one. NCERT Class 7 Social Science Chapter 2 Understanding the Weather Question Answers Download PDF. NCERT Class 7 Social Science Texbook Solutions in English.

NCERT Class 7 Social Science Chapter 2 Understanding the Weather

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Also, you can read the NCERT book online in these sections Solutions by Expert Teachers as per Central Board of Secondary Education (CBSE) Book guidelines. CBSE Class 7 Social Science Textual Solutions in Englishi Medium are part of All Subject Solutions. Here we have given NCERT Class 7 Social Science Notes, CBSE Class 7 Social Science in Hindi Medium Textbook Solutions for All Chapters, You can practice these here.

Understanding the Weather

Chapter: 2

THEME – A: India and the World: Land and the People

The Big Questions? 

1. How can we measure and monitor the weather around us? 

Ans: We can measure and monitor the weather around us using different instruments. A thermometer measures air temperature, while a barometer checks air pressure to predict weather changes. A hygrometer measures humidity, and an anemometer measures wind speed. A wind vane shows the direction of the wind, and a rain gauge measures rainfall. Weather satellites and radars help observe clouds, storms, and rainfall from above. Weather stations combine these tools to give regular updates, helping us understand and predict the weather accurately.

2. How do weather predictions help us prepare for events like heavy rain, storms, drought and heat waves?

Ans: Weather predictions help us prepare by providing early warnings. For heavy rain or storms, we can stay safe indoors and protect property. In case of drought, farmers can manage water use and crop planning. During heat waves, people can take precautions to stay hydrated and avoid heat-related health issues. Early forecasts help minimize risks, save lives, and protect property.

1. Match the instrument with the weather element it measures.

Ans: 

2. Jyotsna is deciding what clothes to pack for her school trip to Mumbai in June. She looks at the weather forecast, which predicts 29°C and 84% humidity. What would be your advice to her? 

Ams: The weather forecast of 29°C and 84% humidity in Mumbai during June, Jyotsna should pack:

(i) Light, breathable clothes: Cotton or linen shirts, dresses, or shorts will keep you cool and comfortable.

(ii) Light-colored clothing: It reflects the heat, keeping you cooler compared to dark colors.

(iii) Comfortable footwear: Opt for breathable shoes, preferably sandals or sneakers.

(iv) Protection from the sun: A hat, sunglasses, and sunscreen will help protect you from the intense sun.

(v) Rain gear: Pack a light umbrella or raincoat for the occasional monsoon showers.

(vi) Stay hydrated: Carry a water bottle to keep yourself hydrated in the humid weather.

3. Imagine that a small group of students is setting up a rain gauge. Here are some options for the site. 

(i) The school vegetable garden. 

(ii) The terrace of the school building. 

(iii) Open ground with elevated platform. 

(iv) Compound wall of school. 

(v) Verandah of the school laboratory.

Discuss in your group and finalise the site. Write down the reasons for your decision. 

Ans: (i) The school vegetable garden: A vegetable garden might be an open area, but depending on the size and height of the plants, they could potentially obstruct rain from reaching the gauge, especially as they grow. The ground might also not be perfectly flat, which is required for accurate measurements.

(ii) The terrace of the school building: Terraces are generally open, which is a good starting point. However, they can be subject to specific wind patterns around the building, and structures like low parapet walls could potentially interfere with accurate rainfall collection by causing turbulence or blocking rain. It would likely provide a flat surface.

(iii) Open ground with elevated platform: This option specifically mentions “Open ground,” directly aligning with the instruction to place the gauge in an open area. Being on open ground suggests it is likely away from obstructing objects. The “elevated platform” is key because it provides a flat surface and helps ensure the gauge is stable, preventing tilting or toppling with the wind. It also keeps the gauge slightly above ground level, away from splashes or ground-level obstructions.

(iv) Compound wall of the school: A compound wall is not a suitable location. It is not a flat surface and would significantly obstruct rain, preventing accurate measurement. The School Compound Wall is a sturdy construction designed to serve as a boundary fence for schools. 

(v) Verandah of the school laboratory: A verandah is a covered or partially covered area. Rain would not fall directly into a rain gauge placed on a verandah, making it impossible to measure rainfall accurately. Science laboratory in schools is a space where all the technological research and scientific experiments occur.

Based on the analysis, the best choice for setting up the rain gauge is the open ground with an elevated platform as it ensures accurate, unobstructed, and stable rainfall measurements.

4. Below is a chart taken from IMD, Jammu and Kashmir. Looking at the data available, write a short script to report the weather conditions in different parts of Jammu and Kashmir on the date shown. (Hint: Cover the temperature range, maximum and minimum temperatures, humidity, precipitation, etc.)

Note: ACT means actual; NOR means normal; DEP is departure from normal; R/F is rainfall; S/N is snowfall; TR means trace amount. 

Ans: The weather in Jammu and Kashmir shows a significant drop in temperatures, with most places recording below-normal values.

(i) Temperatures: Srinagar recorded a max of 6.5°C (2.4°C below normal) and min of -0.7°C. Qazigund, Pahalgam, and Kupwara also experienced colder-than-normal days, while Gulmarg recorded a chilling -2.6°C as the maximum.

(ii) Precipitation: Rainfall was substantial in most areas, with Qazigund receiving 36.2 mm (22.0 cm snowfall) and Gulmarg getting 35.2 mm (29.0 cm snowfall). Srinagar recorded 13.4 mm of rain, while Muzaffarabad saw 25.8 mm.

(iii) Humidity: High relative humidity prevailed, with Gulmarg recording 100% in the evening. Srinagar maintained 89-90% throughout the day.

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