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Geography > 5/4/2024 geography1 universe and solar system > Flashcards

5/4/2024 geography1 universe and solar system Flashcards

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1
Q

who is the first person to start the systematic study of Astronomy

A

claudius Ptolemy

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2
Q

who Introduced Earth centric approach

A

Claudus Ptolemy

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3
Q

who introduced Heliocentric theory

A

Copernicus

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4
Q

what is the name of the person who introduced the term bigbang theory

A

George Lemaitre

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5
Q

The universe was formed after

A

13.6 billion years

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6
Q

what is the name of the spiral shaped Galaxy

A

Milky way Galaxy

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7
Q

How distance are measured in space

A

the speed of light

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8
Q

the speed of the light is

A

3 x 10^8 m/s

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9
Q

one light year is equal to

A

9.46x10^12kms

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10
Q

one Parsec

A

3.26 light years

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11
Q

what is the average distance between Earth and Sun

A

14.98 crore kms

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12
Q

what is the distance between the earth and the sun in astronomical units

A

1 Astronomical units

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13
Q

who is the father of Geography

A

Hecateus

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14
Q

the term geography was first used by

A

Eratosthenes

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15
Q

what is the circumference of Earth

A

40075 kms

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16
Q

what is known as the evolution theory of the Universe

A

The big bang theory

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17
Q

sun is

A

a star

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18
Q

the composition of Sun are

A

71% Hydrogen
28.5% Helium
2.5% heavy elements

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19
Q

what is the reason behind the source of energy behind the Sun

A

Nuclear fussion

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20
Q

the size of the star increases as the

A

star ages

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21
Q

diameter of the sun is

A

110 times of the EArth

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22
Q

according to Kepler the distance between EArth and the sun is longer it is called

A

Apehelion

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23
Q

according to Kepler the distance between EArth and the sun is shorter it is called

A

Perihelion

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24
Q

what is the apehelion distance

A

152 million kilometres

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25
Q

what is the Perihelion distance

A

147 million kilometres

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26
Q

what is the diameter of the sun

A

1392000 kms

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27
Q

what is the time taken by the sunlight to reach earth

A

8 minutes and 16.6 seconds

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28
Q

what are the inner planets or earth like planets in the solar system

A

Mercury , Venus , Earth and Mars

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29
Q

what are the outer planets of the solar system or the Jovian planets of the solar system

A

Jupiter , saturn ,Uranus and Neptune

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30
Q

the existence of galaxies beyond milky way galaxy was first demonstrated by

A

Edwin Hubble

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31
Q

what are the three types of Galaxies present in teh universe

A

Elliptical , spiral and irregular.

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32
Q

milky way galaxy is a

A

spiral Galaxy

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33
Q

what is the time taken by the milky way Galalxy to complete one orbit around the Galactic centre

A

230 million years

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34
Q

one light year is equal to

A

60000 astronomical units

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35
Q

the brightest star outside our solar system is

A

Sirius also called Dog star

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36
Q

the closest star in the solar system is

A

Proxima centauri- 4.2 light years away

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37
Q

what is the second closest star to the solar system

A

Alpha centauri - 4.3 lighy tears away

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38
Q

what is the third closest star to the solar system

A

Barnards star- 5.9 light years away

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39
Q

what is the nearest planet to the sun

A

Mercury

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40
Q

what is the name of the planet which has no satellite and it is the smallest planet

A

Mercury

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41
Q

mercury revolves around the sun in

A

88 days

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42
Q

mercury completes its single rotation in

A

59 days

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43
Q

which planet is known as the Roman God of commerce

A

Mercury

44
Q

what is the second closest planet to the sun

A

Venus

45
Q

which planet is called as Earths twin

A

Venus

46
Q

Venus completes its revolution in

A

225 days

47
Q

Venus completes its rotation in

A

243 days

48
Q

what is the total number of satellites does the Venus have

A

none

49
Q

which planet is termed as pressure cooker planet

A

Venus

50
Q

venus rotates from

A

East to west

51
Q

which planet is called morning and evening star

A

Venus

52
Q

what isthe fifth largest planet in the solar system

A

Earth

53
Q

the Earth is called blue planet because

A

the prescence of water

54
Q

what is the third closest planet to sun in the solar system

A

The Earth

55
Q

due to the rotation of the earth

A

the day and night happens

56
Q

The earth revolves around the sun in

A

365 days 5 hours 48 minutes and 46 seconds

57
Q

the time taken by earth to make one revolution of the sun is called

A

solar year

58
Q

what is the only satellite of Earth

A

the moon

59
Q

two thirds of Earth is surrounded by

A

water

60
Q

the moon revolves around the earth in

A

27 days 7 hours and 43 minutes and 11.47 seconds

61
Q

the study of the moon is called

A

the Selenology

62
Q

what is the diameter of the moon

A

3500kms

63
Q

what is the mass of the moon

A

7.35 x 10^22 kg

64
Q

what is the distance of moon from the earth

A

384400 kms

65
Q

what is the circumference of the moon

A

11000km

66
Q

what is the revolution time of the moon

A

27.3 days

67
Q

what is the gravitational pull of the moon

A

1/6 th of that of the earth

68
Q

which planet is called the red planet

A

Mars

69
Q

which planet is the fourth closest planet to sun

A

Mars

70
Q

Mars completes its rotation in

A

24 hours and 37 minutes

71
Q

mars completes its revolution in

A

687 days

72
Q

what are the two moons of Mars

A

phobos and deimos

73
Q

what is the name of the mountain present in the mars

A

Nix olympia which is three times larger than the Mount everest

74
Q

which planet is known as the God of war

A

Mars

75
Q

what is the name of the smallest moon of the solar system

A

Deimos

76
Q

what is the height of the Mount Everest

A

8848 metres

77
Q

which planet is called mini solar system

A

the Jupiter

78
Q

which planet has the highest number of moons in the solar system

A

the Jupiter

79
Q

how long it takes jupiter to revolve around the sun

A

11.86 years

80
Q

Jupiter completes its one rotation in

A

9 hours 55 minutes and 30 seconds

81
Q

mass of the Jupiter is

A

318 times that of our Earth

82
Q

what is the name of the biggest storm taking place in the Jupiter which is 1.3 ktimes bigger than earth

A

the Great red spot

83
Q

what planet is called the yellowish planet

A

SAturn

84
Q

what is the name of the largest satellite in the solar system

A

Ganymede

85
Q

the saturn completes its revolution in

A

29.5 years

86
Q

what is the total number of moon does saturn have

A

82 moons

87
Q

what are the important moons of SAturn

A

Titan, Phoene, Tethys and Mimas

88
Q

the uranus rotates from which direction to which direction

A

east to west

89
Q

what are the total number of satellites in the uranus

A

27

90
Q

what is the biggest moon of the uranus

A

Titania

91
Q

which planet is called the Green planet

A

The Uranus . it is due to the presence of methane gas

92
Q

uranus completes its revolution in

A

84 years

93
Q

Uranus completes its rotation in

A

16.8 hours

94
Q

what is the fourth largest planet in the solar system

A

Neptune

95
Q

what is the eight planet from the sun

A

Neptune

96
Q

Neptune takes how long to revolve around the sun

A

165 years

97
Q

what is the name of the spacecraft which visited neptune

A

Voyager 2

98
Q

what are the total number of moon in the Neptune

A

14 moons

99
Q

what is the name of the satellite which has the same atmosphere as that of Earth

A

The Titan

100
Q

what is the smallest planet

A

Mercury

101
Q

which planet has the fastest rotation in the solar system

A

The Jupiter

102
Q

what isthe densest planet in the solar system

A

The earth

103
Q

what isthe descending order of planets in terms of mass

A

Jupiter saturn neptune venus earth uranus mars mercury

104
Q

what is the name of spot in the neptune which is same as that of the Planet earth

A

Dark green spot

105
Q
A

Geography (31 decks)

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