1. Three different instruments are used for measuring these weather elements: Rain gauge measures how much rain falls in a day or over a period. Anemometer measures wind speed using rotating cups that spin faster with stronger wind. Hygrometer measures humidity or moisture in the air. Each tool is esseRead more

    Three different instruments are used for measuring these weather elements:

    Rain gauge measures how much rain falls in a day or over a period.

    Anemometer measures wind speed using rotating cups that spin faster with stronger wind.

    Hygrometer measures humidity or moisture in the air.
    Each tool is essential in tracking specific weather elements and is used by meteorologists to prepare accurate forecasts. These instruments are also installed in Automated Weather Stations for continuous, real-time data collection.

     

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  2. According to Class 7, weather describes daily atmospheric conditions—such as temperature, rain, and wind—which can change within hours or days. Climate, on the other hand, refers to the long-term average of weather patterns over a period of 30 years or more in a particular region. For example, a hotRead more

    According to Class 7, weather describes daily atmospheric conditions—such as temperature, rain, and wind—which can change within hours or days. Climate, on the other hand, refers to the long-term average of weather patterns over a period of 30 years or more in a particular region. For example, a hot day is weather, but if a place is hot for most of the year, that’s its climate. Climate helps categorize regions, while weather helps with daily planning.

     

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  3. Temperature is measured with thermometers, which may be traditional (using mercury or alcohol) or digital. It fluctuates daily—typically coldest just before sunrise and warmest in the early afternoon. Over seasons, it varies due to Earth’s tilt and orbit: summers are hot, winters are cold. Factors lRead more

    Temperature is measured with thermometers, which may be traditional (using mercury or alcohol) or digital. It fluctuates daily—typically coldest just before sunrise and warmest in the early afternoon. Over seasons, it varies due to Earth’s tilt and orbit: summers are hot, winters are cold. Factors like altitude, cloud cover, and wind also affect it. Maximum and minimum thermometers help record temperature ranges, which are used in statistics and forecasts to understand weather patterns over time.

     

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  4. Accurate weather forecasts are vital due to increasing climate-related events like droughts, floods, and storms. Early predictions allow people to prepare, reducing risks to life and property. Farmers can safeguard crops, fishermen avoid storms, and disaster teams plan evacuations. With climate chanRead more

    Accurate weather forecasts are vital due to increasing climate-related events like droughts, floods, and storms. Early predictions allow people to prepare, reducing risks to life and property. Farmers can safeguard crops, fishermen avoid storms, and disaster teams plan evacuations. With climate change making weather more unpredictable, reliable forecasts are necessary for agriculture, travel, health, and safety. Governments also use forecasts to manage emergencies and mobilize resources effectively. Thus, prediction plays a crucial role in saving lives and managing resources.

     

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  5. Humidity plays a key role in maintaining environmental conditions. In museums, high humidity can damage paintings, manuscripts, or sculptures by causing mold or corrosion. Therefore, humidity is carefully monitored and controlled. In industries like food processing, textiles, and electronics, wrongRead more

    Humidity plays a key role in maintaining environmental conditions. In museums, high humidity can damage paintings, manuscripts, or sculptures by causing mold or corrosion. Therefore, humidity is carefully monitored and controlled. In industries like food processing, textiles, and electronics, wrong humidity levels can spoil products or interrupt production. A hygrometer helps maintain suitable levels. Controlled humidity ensures safety, longevity, and proper functioning of both delicate materials and high-precision industrial processes, making measurement very important.

     

    For more NCERT Solutions for Class 7 Social Science Chapter 2 Understanding the Weather Questions & Answer:

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