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Physical World Test - 9

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Physical World Test - 9
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Earth pulls every object towards it with a force called:
    Solution
    Gravitational force of the earth acts from the centre of the earth and pulls every substance towards itself.
  • Question 2
    1 / -0
    Gravity is :
    Solution
    Gravity acts from the centre of the earth, therefore it is a down ward acting force.
  • Question 3
    1 / -0
    A scientific way of doing things involve
    Solution
    The scientific method is a way to ask and answer scientific questions by making observations and doing experiments.The steps of the scientific method are to:
    • Ask a Question
    • Do Background Research
    • Construct a Hypothesis
    • Test Your Hypothesis by Doing an Experiment
    • Analyze Your Data and Draw a Conclusion
    • Communicate Your Results                                                                      
    From these we can tell that all the options mentioned above are correct. Hence option D is the correct answer.
  • Question 4
    1 / -0
    The man who is known as the Father of Experimental Physics is 
    Solution
    Galileo Galilei was and is sometimes referred to as "the father of experimental science." Galileo didn't take much on faith, rather, he tested his ideas through experiments and expressed them in mathematical form. Hence, option C is the correct answer.
  • Question 5
    1 / -0
    Gravity is defined  as:
    Solution
    Gravitational force of the earth acts from the centre of the earth and pulls every substance towards itself.
  • Question 6
    1 / -0
    Earth has no gravitational force:
    Solution
    Gravitational force of the earth acts from the centre of the earth and pulls every substance towards itself.
  • Question 7
    1 / -0
    _____ suggested that the ships should be marked with load lines.
    Solution
    A load line, also called Plimsoll mark found by Samuel plimsoli, is a marking indicating the extent to which the weight of a load may safely submerge a ship, by way of a waterline limit. The purpose of the load line is to ensure that a ship has sufficient freeboard (the height from the waterline to the main deck) and thus sufficient reserve buoyancy (volume of ship above the waterline).
  • Question 8
    1 / -0
    The person who has been awarded the title of the Father of Physics of $$20^{th}$$ century is 
    Solution
    It is because the inventions or the theories formulated by Isaac Newton is more of real life things which could be more or less be seen and is of common sense. The physics of this real objects is known as classical mechanics. Mostly classical mechanics is enriched with Newtonian laws , Hamiltonians and Lagrangian approach. In 1905 three papers were published by Einstein which led to a hell of new discoveries and the discoveries and theories followed is under the branch of modern Physics. Hence, option D is the correct answer.
  • Question 9
    1 / -0
    Which of the following is true regarding the physical science?
    Solution
    It means any of  the sciences concerned with non-living matter, energy, the physical properties of the universe, such as physics, chemistry, astronomy, and geology. Thus, option C is the correct option.

  • Question 10
    1 / -0
    The man who has won Nobel Prize twice in physics is 
    Solution
    John Bardeen, an American physicist who was the winner of the Nobel Prize for Physics in both 1956 and 1972. He shared the 1956 prize with William Shockley.  and Walter H. Brattain for their joint invention of the transistor. With Leon N. Cooper and John R. Scheiffer he was awarded the 1972 prize for development of the theory of superconductivity.
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