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1. Your Information:

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2. How many theories have been proposed over the years to explain the destruction of the Twin Towers?

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3. The National Institute of Standards and Technology (NIST) was tasked by Congress with determining how and why the Twin Towers collapsed. After three years of study, what did NIST conclude was the cause the total collapse of the Twin Towers?

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4. When there are several different hypotheses proposed to explain a physical event, what is the best way to determine which hypothesis is the most correct?

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5. True or False: The total time for all structural elements of the Twin Towers to completely fall to the ground was less than 15 seconds.

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6. The final “decline and fall” of the North Tower's inner core columns (aka “The Spire”) has been explained by NIST and is described in the mathematical crush-down crush-up theory.

(This concludes the quiz. The following questions are optional.)

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7. Optional: Do you believe that a new investigation into the collapse of the World Trade Center Twin Towers is warranted?

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8. Optional: Would you like to receive our occasional email news bulletins?

 
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