Solar System — Set 2
Geography · सौर मंडल · Questions 11–20 of 70
The term 'Goldilocks Zone' refers to?
Correct Answer: A. Habitable zone around a star
The 'Goldilocks Zone' refers to the habitable zone around a star. It is the range of orbits where a planet can support liquid water on its surface. Earth is located in the Sun's Goldilocks Zone.
Which celestial body was reclassified as a 'Dwarf Planet' in 2006?
Correct Answer: A. Pluto
Pluto was reclassified as a 'Dwarf Planet' by the International Astronomical Union in 2006. It failed to meet the criteria of clearing its orbit of other debris. It is now considered part of the Kuiper Belt objects.
The nuclear reaction that produces energy in the Sun is called?
Correct Answer: B. Nuclear Fusion
The energy in the Sun is produced by Nuclear Fusion. In this process, hydrogen nuclei combine to form helium nuclei under extreme heat and pressure. This releases a tremendous amount of energy in the form of light and heat.
Which is the smallest planet in our solar system?
Correct Answer: D. Mercury
Mercury is the smallest planet in our solar system. It is also the closest planet to the Sun. It has no moons and a very thin atmosphere.
The outermost layer of the Sun's atmosphere, visible during a total solar eclipse, is called?
Correct Answer: A. Corona
The Corona is the outermost layer of the Sun's atmosphere. It appears as a pearly white halo during a total solar eclipse. It is extremely hot, extending millions of kilometers into space.
Which planet is known as the 'Blue Planet'?
Correct Answer: D. Earth
Earth is known as the 'Blue Planet'. This is because about 71% of its surface is covered with water. From space, the oceans give it a distinct blue appearance.
Ganymede is the largest moon of which planet?
Correct Answer: D. Jupiter
Ganymede is the largest moon of Jupiter. It is also the largest moon in the entire solar system, even bigger than the planet Mercury. It is the only moon known to have its own magnetic field.
The point in a planet's orbit where it is closest to the Sun is called?
Correct Answer: A. Perihelion
Perihelion is the point in an orbit where a planet is closest to the Sun. For Earth, this occurs around early January. The opposite point, where it is farthest, is called Aphelion.
Which gas makes up the majority of the atmosphere on Venus?
Correct Answer: B. Carbon Dioxide
Carbon Dioxide makes up the majority of Venus's atmosphere. It accounts for about 96% of the atmospheric composition. This thick greenhouse gas causes extreme surface temperatures.
Which planet spins on its side, effectively rolling along its orbital path?
Correct Answer: A. Uranus
Uranus spins on its side with an axial tilt of about 98 degrees. This gives the appearance that it is rolling along its orbital path. This unique tilt is likely due to a massive collision in its past.