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
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.
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.
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
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
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.
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