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NCERT GRADE 10

     Unit II: Electronic Spreadsheet (Advanced) using LibreOffice Calc 1. What is an electronic spreadsheet? An electronic spreadsheet is a computer program that helps you enter, store, and calculate data in rows and columns. You can use formulas to do quick calculations and create charts to show the data. Example: Microsoft Excel or LibreOffice Calc. 2. What is LibreOffice Calc? LibreOffice Calc is a free spreadsheet software, just like Microsoft Excel. It is used to enter data, perform calculations, make graphs, and analyze information. It is a part of the LibreOffice package. 3. What is data analysis? Data analysis means studying data to find useful information, patterns, or answers. It helps in making better decisions. For example, analyzing marks of students to find the average and highest score. Chapter 4: Analyse Data Using Scenarios and Goal Seek 1. Define the terms: (a) Consolidate function It is used to combine data from different sheets or ranges into one summa...
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Space Grade 7

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Module 1: Rockets  Pre Class Activity (do by your own) Q2. How do rockets work    Class Notes  How Rockets Work Rockets move using Newton’s Third Law : when hot gases are pushed down , the rocket moves up . This is called rocket propulsion . Fuel and oxidizer burn in the engine, making gases that shoot out at high speed. Types of fuels : Solid fuel → simple, powerful, can’t be stopped. Liquid fuel → controllable, used for big rockets. Cryogenic fuel (very cold liquid hydrogen + oxygen) → gives very high power. 👉 ISRO uses PSLV (workhorse), GSLV (for heavy satellites), and LVM-3 (heaviest rocket for moon and human missions). Theory Module 2: Rocket Transportation and Launch Pre-Class Analysis Questions (for discussion) How do you think such a huge rocket is moved from the factory to the launch site? Can we transport a rocket in a normal truck like other goods? Why or why not? Why do you think water transport (ships/barges) migh...
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