Ultimate Quiz On Earth And Space Science! Trivia Facts

36 Questions | Total Attempts: 207

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Ultimate Quiz On Earth And Space Science! Trivia Facts - Quiz

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Questions and Answers
  • 1. 
    A Lagrange point in the Earth-Moon system is a position
    • A. 

      On the Earth's surface that the Moon's gravity is concentrated

    • B. 

       on the surface of the Moon that points directly away from the Earth

    • C. 

      In space where the effects of the Earth's and Moon's gravity cancel each other out 

    • D. 

      Directly between the Earth and Moon

  • 2. 
    An optical SETI signal would most likely consist of
    • A. 

      Using mirrors to reflect light from the surface of a planet

    • B. 

       using a giant disk to block out the light from the parent star

    • C. 

      A continuous beam of laser light

    • D. 

       rapid, short bursts of intense laser light 

  • 3. 
    An organism with an Encephalization Quotient (EQ) of 4 is expected to be of
    • A. 

      Above-avg intelligence

    • B. 

      Lowest possible intelligence

    • C. 

      Below-avg intelligence

    • D. 

      Avg intelligence

  • 4. 
    Any reply to a detected SETI signal should
    • A. 

      Represent a consensus of the Earth's population 

    • B. 

      Be decided upon by the group of scientists who first detected the signal

    • C. 

      Be decided upon by the government of the country who first detected the signal

    • D. 

      Be sent immediately as a signal is received

  • 5. 
    If we were to intercept a signal from a civilization that was sent to another of its colonies on the other side of the galaxy, this would be an example of
    • A. 

       an intentional signal beacon

    • B. 

      A signal used for communication between a civilization's home world and another planet in its own planetary system

    • C. 

      A signal used for communication between a civilization's home world and another star system 

    • D. 

       a signal used for local communication the world where the intelligent beings exist

  • 6. 
    In 1974 we transmitted a message toward the globular cluster M13 which is 21,000 ly away. What is one reason that this object was probably not ideal for sending a message to?
    • A. 

       it is so far away that we will probably have stopped communicating before we receive and return signal

    • B. 

      The message will be absorbed by interstellar dust before it reaches the cluster

    • C. 

      Globular clusters contain, old, low mass stars with fewer heavy elements and hence are not ideal places for life 

    • D. 

      Globular clusters contain young, high mass stars with insufficiently long main sequence lifetimes and hence are unsuitable places for life

  • 7. 
    Intelligence may be subject to convergent evolution because it
    • A. 

       is required for survival

    • B. 

      Is a fundamental characteristic of life

    • C. 

      Has survival value 

    • D. 

       is inevitable

  • 8. 
    Sending signals at optical wavelengths might be a viable alternative to radio wavelengths
    • A. 

       over relatively short distances where absorption by interstellar matter would not be a problem 

    • B. 

       over all distances as long as the intensity of the signal is strong enough

    • C. 

      Only between civilizations around solar-type stars whose eyes have evolved to see such radiation

    • D. 

      As long as the light transmitted is a different color than the light given off by the parent star

  • 9. 
    The 1420 MHz (21 cm) radio line generated by neutral hydrogen atoms is a good choice for interstellar communications because
    • A. 

       it is the easiest radio frequency to generate

    • B. 

       it is the only frequency to which radio telescopes can be tuned

    • C. 

       all intelligent civilizations should be aware of its universal significance and would probably also think of sending and receiving signals at this frequency 

    • D. 

      It is the only radio frequency that is not blocked by interstellar matter

  • 10. 
    The adoption of very similar streamlined body shapes by both sharks and dolphins provides evidence for
    • A. 

      Genetic mutations

    • B. 

      Convergent evolution

    • C. 

      Cross-breeding

    • D. 

      Life originating in the oceans

  • 11. 
    The Declaration of Principles Concerning Activities Following the Detection of Extraterrestrial Intelligence states that the first thing to do after the detection of a possible signal is to
    • A. 

      Classify it top secret

    • B. 

      Announce the discovery to the public

    • C. 

      Send a reply

    • D. 

      Confirm that it is genuine

  • 12. 
    The Drake equation allows us to estimate the number of
    • A. 

       intelligent civilizations that have existed in our galaxy during its entire lifetime

    • B. 

       intelligent civilizations capable of communicating in our galaxy now 

    • C. 

      Intelligent civilizations capable of traveling to the Earth

    • D. 

      Habitable planets on which life has arisen

  • 13. 
    The fact that Encephalization Quotients (EQs) of organisms have generally increased with time provides evidence for
    • A. 

      Convergent evolution toward increasing intelligence

    • B. 

      Genetic mutations

    • C. 

      Cross-breeding between organisms

    • D. 

      Artificial selection

  • 14. 
    The fundamental principles of radio SETI were first discussed in a seminal 1959 paper by
    • A. 

      Drake

    • B. 

      Cocconi and Morrison

    • C. 

      Marconi and Tesla

    • D. 

      Sagan and Oliver

  • 15. 
    The organisms with the highest Encephalization Quotient (EQ) ratios are
    • A. 

      Whales

    • B. 

      Humans

    • C. 

      Dolphins

    • D. 

      Chimps

  • 16. 
    The ratio of an organism's brain weight to body weight is thought to be roughly proportional to its
    • A. 

      Sex drive

    • B. 

      Rate of movement

    • C. 

      Height

    • D. 

      Intelligence

  • 17. 
    The search for radio signals from intelligent civilizations on planets around nearby solar-type stars is an example of a
    • A. 

      Sky survey

    • B. 

      Intentional sweep

    • C. 

      Random sweep

    • D. 

      Targeted search

  • 18. 
    What do we know for certain about the various factors in the Drake equations?
    • A. 

      That none of them can equal 0

    • B. 

      That at least one of them must equal 1

    • C. 

      That at least one of them must equal 0 

    • D. 

      That none of them can equal 1

  • 19. 
    What kind of civilization can life on Earth currently be classified as?
    • A. 

      Type III

    • B. 

      Type IV

    • C. 

      Type II

    • D. 

      Type I

  • 20. 
    What type of civilization would be able to use all the energy around its parent star to capture its radiation?
    • A. 

      Type II

    • B. 

      Type III

    • C. 

      Type I

    • D. 

      Type IV

  • 21. 
    Which factor in the modified Drake equation are we best able to estimate?
    • A. 

      Nhp, the number of habitable planets in our galaxy 

    • B. 

       fciv, fraction of life-bearing planets where intelligent civilizations have at some time arisen

    • C. 

      Flife, fraction of life-bearing habitable planets which are intelligent now

    • D. 

       fnow, fraction of civilization-bearing planets that have intelligent civilizations on them now

  • 22. 
    Which of the following kinds of signal do we currently have the best chance of detecting with currently technology?
    • A. 

      A signal used for communication between a civilization's home world and another star system

    • B. 

      A signal used for communication between a civilization's home world and another planet in its own planetary system

    • C. 

       an intentional signal beacon 

    • D. 

      A signal used for local communication in the world where the intelligent beings exist

  • 23. 
    Which of the following signals from an advanced civilization would be easiest to detect?
    • A. 

      Small amplitude, wide bandwidth

    • B. 

      Large amplitude, narrow bandwidth

    • C. 

      Small amplitude, narrow bandwidth

    • D. 

      Large amplitude, wide bandwidth

  • 24. 
    Which type of electromagnetic radiation is able to carry the most information?
    • A. 

      All types have equal ability 

    • B. 

      Microwaves

    • C. 

      Gamma rays

    • D. 

      Radio waves

  • 25. 
    Which type of signal could carry the largest amount of information?
    • A. 

      Small bandwidth

    • B. 

      High intensity

    • C. 

      Low intensity

    • D. 

      Large bandwidth

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