NASA Space Observation Quiz: Near Earth Objects!

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NASA Space Observation Quiz: Near Earth Objects! - Quiz

The National Aeronautics and Space Administration (NASA) is an independent agency of the United States Federal Government which is laddened with the responsibility of handling and exercising civilian space program as well as aeronautics and aerospace researches. It was formed on July 29, 1958, and has its headquarters in Washington, DC. This test is to ascertain your knowledge regarding the NEOs which have been observed over the years.


Questions and Answers
  • 1. 

    When was the message which suggested there was a chance 1997 XF11 could hit Earth in 2028 received? 

    • A.

      1998

    • B.

      1997

    • C.

      1999

    • D.

      2000

    Correct Answer
    A. 1998
    Explanation
    The message suggesting that there was a chance 1997 XF11 could hit Earth in 2028 was received in 1998.

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  • 2. 

    Based on orbit calculations of identified NEOs, the risk of future impact is assessed on how many scales? 

    • A.

      3

    • B.

      2

    • C.

      5

    • D.

      4

    Correct Answer
    B. 2
    Explanation
    The correct answer is 2. The risk of future impact is assessed on two scales based on orbit calculations of identified Near-Earth Objects (NEOs). These scales are the Torino Scale and the Palermo Technical Impact Hazard Scale. The Torino Scale is used to categorize the potential impact threat of NEOs on a scale from 0 to 10, while the Palermo Scale calculates the probability of a NEO impact based on its size and orbit.

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  • 3. 

    Spaceguard has been in existence since when? 

    • A.

      1998

    • B.

      1997

    • C.

      1999

    • D.

      2000

    Correct Answer
    A. 1998
    Explanation
    Spaceguard has been in existence since 1998.

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  • 4. 

    The initial US Congress mandate to NASA was to catalogue at least how many percent of NEOs which are at least 1 kilometer?

    • A.

      90%

    • B.

      95%

    • C.

      80%

    • D.

      100%

    Correct Answer
    A. 90%
    Explanation
    The initial US Congress mandate to NASA was to catalogue at least 90% of NEOs (Near-Earth Objects) that are at least 1 kilometer in size. This means that NASA was required to identify and track a significant majority of these potentially hazardous objects in order to better understand and mitigate the risk they pose to Earth.

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  • 5. 

    There used to be how many planets? 

    • A.

      10

    • B.

      9

    • C.

      8

    • D.

      7

    Correct Answer
    B. 9
    Explanation
    The question is asking about the number of planets that used to exist. According to the traditional classification, there used to be nine planets in our solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto. However, in 2006, the International Astronomical Union redefined the definition of a planet, and Pluto was reclassified as a "dwarf planet." Therefore, the correct answer is 9.

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  • 6. 

    Which of the following was decided by scientists to not be big enough? 

    • A.

      Mercury 

    • B.

      Pluto

    • C.

      Eros

    • D.

      Vesta

    Correct Answer
    B. Pluto
    Explanation
    Pluto was decided by scientists to not be big enough. This is because in 2006, the International Astronomical Union (IAU) redefined the definition of a planet, and Pluto did not meet the new criteria. According to the new definition, a planet must orbit the Sun, be spherical in shape, and have cleared its orbit of other debris. Pluto failed to meet the third criterion as it shares its orbit with other objects in the Kuiper Belt. Therefore, scientists concluded that Pluto is not big enough to be considered a planet.

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  • 7. 

    How many known dwarf planets exist?

    • A.

      5

    • B.

      3

    • C.

      1

    • D.

      2

    Correct Answer
    B. 3
    Explanation
    There are currently three known dwarf planets in our solar system. These dwarf planets are Pluto, Eris, and Haumea. They are similar to planets in that they orbit the Sun, but they are smaller in size and have not cleared their orbits of other debris. The classification of dwarf planets was introduced by the International Astronomical Union (IAU) in 2006.

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  • 8. 

    Halley's comet appears in how many years? 

    • A.

      67

    • B.

      28

    • C.

      76

    • D.

      53

    Correct Answer
    C. 76
    Explanation
    Halley's comet appears every 76 years. This is a well-known astronomical phenomenon that has been observed for centuries. The comet was first recorded by Edmund Halley in 1705, who predicted its return based on historical observations. Since then, it has been observed multiple times, with the most recent appearance in 1986. The next predicted appearance of Halley's comet is in 2061, which will be approximately 76 years after its previous appearance.

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  • 9. 

    Asteroids travel between the orbits of which of the following? 

    • A.

      Jupiter and Pluto

    • B.

      Mercury and Saturn

    • C.

      Mars and Jupiter 

    • D.

      Earth and Jupiter 

    Correct Answer
    C. Mars and Jupiter 
    Explanation
    Asteroids travel between the orbits of Mars and Jupiter. This region is known as the asteroid belt, which is located between the innermost and outermost planets of our solar system. The gravitational pull from Jupiter prevents the asteroids from forming into a planet, causing them to remain scattered throughout this region.

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  • 10. 

    What's the diameter of Ceres?

    • A.

      880km

    • B.

      650km

    • C.

      950km

    • D.

      550km

    Correct Answer
    C. 950km
    Explanation
    Ceres, the largest object in the asteroid belt between Mars and Jupiter, has a diameter of 950km. This measurement indicates the distance across the widest point of the celestial body.

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  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 26, 2019
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    AdewumiKoju
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