The Solar System One Liner Questions & Answers
| Question | Answer | |
| 1 | Who first propounded that the Sun is the centre of our Solar system and the earth revolves around it? | Galileo |
| 2 | The scientist who first discovered that the earth revolves around the sun was – | Copernicus |
| 3 | The number of planet in the solar system is – | 9 |
| 4 | The Planets between Earth and Sun are – | Mercury and Venus |
| 5 | The Earth is located between – | Venus and Mars |
| 6 | What is true about planets? | Planets shine though they are non-luminous bodies |
| 7 | The planet nearest to the sun is – | Mercury |
| 8 | ‘The term ‘Goldilocks Zone’ is often seen in the news in the context of – | Search for the Earth-like planets in outer space |
| 9 | Solar energy is due to – | Nuclear Fusion |
| 10 | Diamond Ring is a phenomenon observed – | Only along the peripheral regions of the totality trail |
| 11 | The solar eclipse occurs on – | New Moon day |
| 12 | Every solar eclipse occurs on – | Amavasya |
| 13 | When does a solar eclipse occur? |
When the moon comes between the earth and the sun
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| 14 | The Solar Eclipse achieves totality only in limited geographical regions because – |
The size of the shadow of the Moon on the Earth is small as compared to the cross section of the Earth.
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| 15 | The sun’s halo is produced by the refraction of light in – | Ice crystals in Cirrus clouds |
| 16 | One Astronomical unit is average distance – | Between Earth and Sun |
| 17 | The average or mean distance between the Earth and the sun is – | 150 × 106 Km |
| 18 | The distance between the earth and the sun is – | 149.6 Million Km |
| 19 | The earth is nearest to the sun on – | 3rd January |
| 20 | The size of the Sun is how many times bigger than that of the earth? | 109 times |
| 21 | The two planets having no satellites are – | Mercury and Venus |
| 22 | Which planets does not have a satellite? | Venus |
| 23 | The hottest planet in the solar system is – | Venus |
| 24 | Which planet is known as the ‘Evening Star’? | Venus |
| 25 | Which planet is known as the ‘Morning Star’? | Venus |
| 26 | The planet which is called the twin sister of the earth is – | Venus |
| 27 | The Spacecraft “Magellan” was sent to – | Venus |
| 28 | In the form of the organism, the Scientific name of Earth is – | Green Planet |
| 29 | The diameter of the Earth is – | 12,800 km |
| 30 | Unlike the fluid core of the Earth, the core of the moon is – | Viscous liquid |
| 31 | A chemical element found in abundance in the Earth’s crust is – | Oxygen |
| 32 | Time taken by light emitted from sun to reach earth is – | 8 minutes |
| 33 | Which of the Stars is nearest to the Earth? | Sun |
| 34 | Which of the planets is nearest to Earth? | Mars |
| 35 | The planet nearest to the Earth is – | Venus |
| 36 | In completing one revolution of the sun, Earth takes approximately – | 365.25 days |
| 37 | At which average speed the Earth revolves around the Sun? | 30 Km/ sec |
| 38 | The equatorial circumference of the Earth is nearly – | 40,000 km |
| 39 | Earth’s axis is tilted at an angle of – | 23 1/20 |
| 40 | The Earth’s axis of rotation (polar axis) is always inclined at an angle of – | 23.50 from the elliptic axis |
| 41 | The causes of Day and Night is – | Rotation of Earth on its axis |
| 42 | Who among the following was the first to explain that the rotation of the earth on its own axis accounts for the daily rising and setting of the Sun? | Aryabhata |
| 43 | When the length of day and night is equal the Sunrays falls perpendicular at – | Equator |
| 44 | What causes the change of Seasons? | Earth’s Revolution and Inclination of its Axis |
| 45 | Consider one special point at the Earth’s surface (eg. City Delhi) its temperature at noon (eg. 12 o’clock) will be higher in Summer in comparison to winter because – |
In winter the Sun rays falling on the Earth bends more towards the Earth’s surface in Comparison to the summer.
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| 46 | If the distance between the sun and the earth is reduced by quarter to present distance, then probability of which one will increase – | The duration of our year will be decreased. |
| 47 | The possibility of a desert on earth is more – | Nearby 23° latitude |
| 48 | A Ball thrown outside from an artificial satellite revolving around the Earth will – |
Revolve around the Earth in the same orbit with the same time period as the satellite
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| 49 | In the structure of planet Earth, below the mantle, the core is mainly made up of – | Iron |
| 50 | The World Earth Day is celebrated on – | 22 April |
| 51 | The duration of its day and the tilt of its axis are almost identical to those of the Earth. This is true of – | Mars |
| 52 | Phoenix Mars Lander landed on the surface of Mars on – | 26 May, 2008 |
| 53 | The moons of the Planet Jupiter were discovered by – | Galileo |
| 54 | Which is the largest Planet in the Solar System? | Jupiter |
| 55 | Which is the heaviest planet of our Solar System? | Jupiter |
| 56 | The ring of Jupiter is composed of – | Silicates |
| 57 | Which of the following planets has the largest number of natural satellites or moons? | Jupiter |
| 58 | Time Saturn takes to complete one revolution around the Sun – | 29.5 years |
| 59 | Which of the following planets has rings around it – | Saturn |
| 60 | After seven years of its journey spacecraft Cassini started its revolution in June-2004 around which planet – | Saturn |
| 61 | Planet Saturn – | Warmer than Neptune |
| 62 | Titan is the largest moon of the planet – | Saturn |
| 63 | For one revolution around the Sun, Uranus takes – | 84 years |
| 64 | The year is largest on – | Pluto |
| 65 | Which planet takes the longest period in revolving around the Sun ? | Pluto |
| 66 | According to a new definition adopted by ‘International Astronomical Union’ in 2006, which of the following is not a ‘planet’? | Pluto |
| 67 | Which is the smallest planet of the solar system – | Pluto |
| 68 | The coldest planet in the solar system is – | Neptune |
| 69 | Which of the following planets is the farthest planet of the solar system – | Sometimes Neptune and sometimes Pluto |
| 70 | Although Pluto is the farthest planet, its orbital path is excessively elliptical and crosses other planets’ orbital paths, resulting in the period starting from 1979 for 20 years Pluto is not the farthest planet, which planet is the farthest planet – | Neptune |
| 71 | Nix and Hydra are the moons of – | Pluto |
| 72 | When did man first land on the Moon? | 1969 |
| 73 | The “Sea of Tranquility” lies on – | Moon |
| 74 | On the surface of the moon, two persons cannot listen to each other as – | There is no atmosphere on the Moon |
| 75 | When does a Lunar eclipse take place? |
When the earth comes between the sun and the moon
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| 76 | Lunar Eclipse is caused when – | Earth comes between Sun and Moon |
| 77 | In which situation lunar eclipse occurs? | Full Moon |
| 78 | The main condition responsible for greater brightness of the moon on the full moon day of 22nd Dec. 99′ was – | Perigee |
| 79 | When the moon size is half of the full moon, the angle between the Sun, the Earth and the Moon is – | 900 |
| 80 | The ‘blue moon’ phenomenon occurs when – | Two full moons occur in the same month |
| 81 | When any object is taken from the Earth to the Moon – | Its weight decrease |
| 82 | The distance of the Moon from the Earth is – | 364 thousand km |
| 83 | A country by sending its ‘SELENE’ (Selenological and Engineering Explorer) in the orbit of the Moon became the first country in Asia. The country which achieved this fame is – | Japan |
| 84 | The group of small pieces of rock revolving around the sun between the orbits of Mars and Jupiter are called– | Asteroids |
| 85 | The Asteroids are small celestial bodies in the solar system which are found between the planets – | Mars and Jupiter |
| 86 | The tail of a comet is directed away from the Sun, because – |
The radiation emitted by the Sun exerts a radial pressure on the comet throwing its tail away from the Sun.
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| 87 | Hale-Bopp is the name of a – | Comet |
| 88 | With which planet comet Shoemaker-Levy collided – | Jupiter |
| 89 | Meteor is a – |
A piece of matter which has entered the earth’s atmosphere from outer space
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