Do You Know Drake's Equation?

10 Questions | Total Attempts: 82

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Do You Know Drake

Are we alone in space? Well, that is the eternal question. Thanks to Drake's equation, we can predict the odds of meeting another intelligent civilization. But first, we need to know all about this equation. Are you ready to ace this quiz?


Questions and Answers
  • 1. 
    What does Drake's equation try to estimate? 
    • A. 

      The number of starts in the Milky Way

    • B. 

      The number of planets in the Milky Way

    • C. 

      The number of of active, communicative extraterrestrial civilizations in the Milky Way

    • D. 

      The number of galaxies similar to Milky Way

  • 2. 
    Who created this equation? 
    • A. 

      Dr John Drake

    • B. 

      Dr Drake Francis

    • C. 

      Dr Frank Drake

    • D. 

      Dr James Drake

  • 3. 
    What does "R*" in the equation stand for? 
    • A. 

      The average rate of star formations in our galaxy

    • B. 

      The approximate number of stars in our galaxy

    • C. 

      The number of uninhabited planted

    • D. 

      The fraction of planets bearing life on which intelligent, civilized life, has developed

  • 4. 
    Which is the correct version of Drake's equation? 
    • A. 

      L = R* • fp • ne • fl • fi • fc •N

    • B. 

      N = R* • fp • ne • fl

    • C. 

      N = R* • fp • ne • fl • fi • fc

    • D. 

      N = R* • fp • ne • fl • fi • fc • L

  • 5. 
    Why is the equation challenging for scientists? 
    • A. 

      The number of stars is a constantly changing number.

    • B. 

      The number of life-suitable planets is always changing.

    • C. 

      The scientists have no firm numbers of any variable.

    • D. 

      The signals civilizations release into the space isn't detectable.

  • 6. 
    Which parameter states the fraction of planets with life that actually go on to develop intelligent life? 
    • A. 

      Fi

    • B. 

      Fp

    • C. 

      Fc

    • D. 

      L

  • 7. 
    What does the L variable stand for?
    • A. 

      The length of time for which civilizations release detectable signals into space

    • B. 

      The fraction of life bearing planets on which intelligent life emerges

    • C. 

      The fraction of those stars with planetary systems

    • D. 

      The rate of formation of stars suitable for the development of intelligent life

  • 8. 
    Who proposed the revised equation that focuses on the search for planets with biosignature gases? 
    • A. 

      Alexander Zaitsev

    • B. 

      Harlow Shapley

    • C. 

      Astronomer Sara Seager

    • D. 

      Dr Drake himself

  • 9. 
    What's another definition of Drake's equation? 
    • A. 

      It's an equation that calculates how many times intelligent civilizations have tried to contact us

    • B. 

      It's an equation that predicts the number of potential extraterrestrial contacts

    • C. 

      It's an equation that calculates the odds of finding intelligent life in the universe.

    • D. 

      It's an equation that calculates the exact number of intelligent civilizations in the universe

  • 10. 
    What is Drake's equation actually? 
    • A. 

      A probabilistic argument

    • B. 

      A model theory

    • C. 

      An axiom

    • D. 

      A theorem

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