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Physical World

    • Question 1
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    What is science?

    Solution
    The word Science originates from the Latin verb Scientia meaning 'to know'. 

    Science is a systematic attempt to understand natural phenomena in as much detail and depth as possible, and use the knowledge so gained to predict, modify and control phenomena. Science is exploring, experimenting and predicting from what we see around us.



    Question 2
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    Name some of the popular branches of science.

    Solution
    Some of the popular branches of science are:
    1. Physics
    2. Chemistry
    3. Botany
    4. Zoology
    5. Geology
    Question 3
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    What is Physics?

    Solution
    Physics is that branch of science which deals with the study of properties of matter, energy and their interactions.

    Question 4
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    In Physics, matter and energy are used together in an equation. What is the relation between them?

    Solution
    Yes, the mass of an object is a measure of its energy content. 

    The relation between mass-energy is given by, 
                                  E =mc2

    where, 
    m = Mass of an object
    c  = Speed of Light

    This equation is also known as Mass-Energy Equivalence relation. 

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