Near Earth Objects: A Quiz To Test Your Knowledge!

10 Questions | Total Attempts: 142

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Near Earth Objects: A Quiz To Test Your Knowledge! - Quiz

Near-Earth objects (NEO) are any small solar system body whose orbit brings it to close to Earth. Most known PHOs and NEOs are asteroids, but a small fraction is comets. The United States, the European Union, and other nations are searching for NEOs through a program which is referred to as Spaceguard. NEOs have low surface gravity, and many have Earth-like orbits making them easy targets for spacecraft. This quiz is to test your knowledge on these Near Earth Objects.


Questions and Answers
  • 1. 
    Which of the following qualifies a solar system body as a NEO?
    • A. 

      If its closest approach to the sun is less than 1.3 astronomical units 

    • B. 

      If its closest approach to the sun is less than 1.7 astronomical units 

    • C. 

      If its closest approach to the sun is less than 1.5 astronomical units 

    • D. 

      If its closest approach to the sun is less than 1.4 astronomical units 

  • 2. 
    When is a NEO considered a potentially hazardous object?
    • A. 

      If its orbit crosses the Earths and it's larger than 140 meters 

    • B. 

      If its orbit crosses the Earths and it's larger than 120 meters 

    • C. 

      If its orbit crosses the Earths and it's larger than 100 meters 

    • D. 

      If its orbit crosses the Earths and it's larger than 130 meters 

  • 3. 
    There are how many known NEOs?
    • A. 

      19,220

    • B. 

      19,000

    • C. 

      19,229

    • D. 

      18,589

  • 4. 
    As of November 25, 2018, comets make up how many percent of the NEOs?
    • A. 

      7.3%

    • B. 

      46.9%

    • C. 

      0.6%

    • D. 

      0.56%

  • 5. 
    Atens make up how many per cent?
    • A. 

      7.3%

    • B. 

      42.2%

    • C. 

      0.75%

    • D. 

      7.39%

  • 6. 
    Apollos are of how many per cent? 
    • A. 

      0.89%

    • B. 

      5.5%

    • C. 

      49.7%

    • D. 

      27.9%

  • 7. 
    Amors make up how many percent?
    • A. 

      42.2%

    • B. 

      41.97%

    • C. 

      19.92%

    • D. 

      0.63%

  • 8. 
    Which of the following is a result of asteroids hitting water bodies? 
    • A. 

      Tsunamis 

    • B. 

      Flood

    • C. 

      Landslide

    • D. 

      Vulcanoes

  • 9. 
    As of January 6, 2019, how many PHAs exist?
    • A. 

      1,955

    • B. 

      1,893

    • C. 

      2,597

    • D. 

      1,981

  • 10. 
    As of March 15, 2017, how many NEAs were known to have at least one moon?
    • A. 

      59

    • B. 

      37

    • C. 

      66

    • D. 

      72

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