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General Physical Geography Test 55

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General Physical Geography Test 55
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Weekly Quiz Competition
  • Question 1
    1 / -0
    The Soyuz is a Russian spacecraft which is like a lifeboat for the space station. At least one Soyuz is always docked at the space station. Which of the following statements are correct about Soyuz?
    (i) It carries people and supplies to and from the space station.
    (ii) The crew rides in the part of the spacecraft called a capsule.
    (iii) Upto three astronauts or cosmonauts can ride in a Soyuz capsule.
    Solution
    • The Soyuz is widely considered the world's safest, most cost-effective human spaceflight vehicle.
    • Soyuz spacecraft were used to carry cosmonauts to and from Salyut and later Mir space stations, and are now used for transport to and from the International Space Station.
    • Atleast one Soyuz spacecraft is docked at the ISS at all times for use as an escape craft in the event of an emergency. 
  • Question 2
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    Different stars have a number of physical characteristics that vary for each of the different types of stars. Which quality determines, the fate of a star as black hole upon its death?
    Solution
    • A black hole does not have a surface, like a planet or star. Instead, it is a region of space where matter has collapsed in on itself.
    • This catastrophic collapse results in a huge amount of mass being concentrated in an incredibly small area.
    • The gravitational pull of this region is so great that nothing can escape, not even light.
  • Question 3
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    Vesta was first discovered on March $$29, 1807$$ by Heinrich Wilhelm Olbers. It rotates on its axis every $$5.342$$ hours and has an axial tilt of $$29^o$$. According to several NASA scientists, It is the parent body of many meteorites. Which of the following statements is correct regarding Vesta?
    Solution
    4 Vesta is the largest asteroid in the solar system. Though Ceres is most massive, it is only attributable to the dwarf planets. Vesta rotates on its axis every 5.342 hours and has an axial tilt of 29°. It is the only asteroid that has resurfaced in this manner.
  • Question 4
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    In the study of black holes, what do you call a star that is produced by a supernova?
    Solution
    • Neutron stars are city-size stellar objects with a mass about 1.4 times that of the sun.
    • They are created when giant stars die in supernovas and their cores collapse, with the protons and electrons essentially melting into each other to form neutrons.
    • The gravity on a neutron star is 2 billion times stronger than gravity on Earth.
  • Question 5
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    The appearance of which of the following constellations in the east from Northern hemisphere is the first sign of spring?
    Solution
    • Leo constellation lies in the northern sky. It is one of the zodiac constellations and one of the largest constellations in the sky.
    • Leo is a highly recognizable constellation, as it is one of the few constellations that resemble its namesake.
    • It can be seen in the northern hemisphere in the spring. It is visible at latitudes between 90 degrees and -65 degrees.
  • Question 6
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    Mars has about $$\underline{(i)}$$ the gravity of Earth while Pluto has about $$\underline{(ii)}$$ the gravity of Earth. Select the option which correctly fills the blanks.
    Solution
    • The gravitation force of a planet depends on its density, mass and size.
    • Mars is similar to Earth in many key respects but when it comes to size, mass and density, it is comparatively small. Hence, the gravity of Mars is about one-third of Earth.
    • Similarly, Pluto being a dwarf planet has considerably less mass and density than Earth. Thus, its gravity is about one-fifteenth of Earth.
  • Question 7
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    The first direct observation of an extra-terrestrial collision of a solar object was observed in July $$1994$$ when a comet collided with Jupiter. This collision provided new information about Jupiter and highlighted its role in reducing space debris in the inner solar system. What is the name of that comet?
    Solution
    • Comet Shoemaker-Levy 9 was a comet. It broke apart and crashed into Jupiter, in July 1994. The event was special because people could see, for the first time, how objects in the Solar System, outside Earth, collided.
    • The comet was carefully watched by astronomers worldwide. The crash gave new information about Jupiter. It also showed up its role in reducing space debris in the inner Solar System.
  • Question 8
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    Which of the following statements is correct about the galaxy Milky Way?
    Solution
    • A galaxy is a collection of stars and interstellar material held together by gravity. The galaxy our Sun lives in is called the Milky Way.
    • The name `Milky Way' comes from the band of light that is seen overhead on very dark nights.
    • A thick layer of interstellar dust hides much of the Galaxy from observation by optical telescopes, and astronomers can determine its large-scale structure only with the aid of radio and infrared telescopes, which can detect the forms of radiation that penetrate the hidden matter.
  • Question 9
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    Which of the following Moons in the solar system is known to have its own magnetic field?
    Solution
    • Ganymede is Jupiter’s largest moon and also the largest moon in the solar system.
    • It is the only moon with its own magnetic field. The magnetic field causes auroras, which are ribbons of glowing, electrified gas, in regions circling the moon’s north and south poles.
  • Question 10
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    Read the given paragraph and select the option which correctly fills the blanks.
    When stars run out of fuel in their core, they bloat into $$\underline{(i)}$$ giants. After a few million years, the outer layers begin to 'puff off', forming a planetary nebulae, leaving behind only the dead core of mostly $$\underline{(ii)}$$ and $$\underline{(iii)}$$. They then become $$\underline{(iv)}$$ dwarf stars.
    Solution
    The process given below is the process of the death of a star:
    When stars run out of fuel in their core, they bloat into red giants. After a few million years, the outer layers begin to 'puff-off', forming a planetary nebula, leaving behind only the dead core of mostly carbon and oxygen. Finally, the core will cool into a white dwarf and then eventually into a black dwarf. This entire process will take a few billion years.
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