5/4/2024 geography1 universe and solar system Flashcards
1
Q
who is the first person to start the systematic study of Astronomy
A
claudius Ptolemy
2
Q
who Introduced Earth centric approach
A
Claudus Ptolemy
3
Q
who introduced Heliocentric theory
A
Copernicus
4
Q
what is the name of the person who introduced the term bigbang theory
A
George Lemaitre
5
Q
The universe was formed after
A
13.6 billion years
6
Q
what is the name of the spiral shaped Galaxy
A
Milky way Galaxy
7
Q
How distance are measured in space
A
the speed of light
8
Q
the speed of the light is
A
3 x 10^8 m/s
9
Q
one light year is equal to
A
9.46x10^12kms
10
Q
one Parsec
A
3.26 light years
11
Q
what is the average distance between Earth and Sun
A
14.98 crore kms
12
Q
what is the distance between the earth and the sun in astronomical units
A
1 Astronomical units
13
Q
who is the father of Geography
A
Hecateus
14
Q
the term geography was first used by
A
Eratosthenes
15
Q
what is the circumference of Earth
A
40075 kms
16
Q
what is known as the evolution theory of the Universe
A
The big bang theory
17
Q
sun is
A
a star
18
Q
the composition of Sun are
A
71% Hydrogen
28.5% Helium
2.5% heavy elements
19
Q
what is the reason behind the source of energy behind the Sun
A
Nuclear fussion
20
Q
the size of the star increases as the
A
star ages
21
Q
diameter of the sun is
A
110 times of the EArth
22
Q
according to Kepler the distance between EArth and the sun is longer it is called
A
Apehelion
23
Q
according to Kepler the distance between EArth and the sun is shorter it is called
A
Perihelion
24
Q
what is the apehelion distance
A
152 million kilometres
25
what is the Perihelion distance
147 million kilometres
26
what is the diameter of the sun
1392000 kms
27
what is the time taken by the sunlight to reach earth
8 minutes and 16.6 seconds
28
what are the inner planets or earth like planets in the solar system
Mercury , Venus , Earth and Mars
29
what are the outer planets of the solar system or the Jovian planets of the solar system
Jupiter , saturn ,Uranus and Neptune
30
the existence of galaxies beyond milky way galaxy was first demonstrated by
Edwin Hubble
31
what are the three types of Galaxies present in teh universe
Elliptical , spiral and irregular.
32
milky way galaxy is a
spiral Galaxy
33
what is the time taken by the milky way Galalxy to complete one orbit around the Galactic centre
230 million years
34
one light year is equal to
60000 astronomical units
35
the brightest star outside our solar system is
Sirius also called Dog star
36
the closest star in the solar system is
Proxima centauri- 4.2 light years away
37
what is the second closest star to the solar system
Alpha centauri - 4.3 lighy tears away
38
what is the third closest star to the solar system
Barnards star- 5.9 light years away
39
what is the nearest planet to the sun
Mercury
40
what is the name of the planet which has no satellite and it is the smallest planet
Mercury
41
mercury revolves around the sun in
88 days
42
mercury completes its single rotation in
59 days
43
which planet is known as the Roman God of commerce
Mercury
44
what is the second closest planet to the sun
Venus
45
which planet is called as Earths twin
Venus
46
Venus completes its revolution in
225 days
47
Venus completes its rotation in
243 days
48
what is the total number of satellites does the Venus have
none
49
which planet is termed as pressure cooker planet
Venus
50
venus rotates from
East to west
51
which planet is called morning and evening star
Venus
52
what isthe fifth largest planet in the solar system
Earth
53
the Earth is called blue planet because
the prescence of water
54
what is the third closest planet to sun in the solar system
The Earth
55
due to the rotation of the earth
the day and night happens
56
The earth revolves around the sun in
365 days 5 hours 48 minutes and 46 seconds
57
the time taken by earth to make one revolution of the sun is called
solar year
58
what is the only satellite of Earth
the moon
59
two thirds of Earth is surrounded by
water
60
the moon revolves around the earth in
27 days 7 hours and 43 minutes and 11.47 seconds
61
the study of the moon is called
the Selenology
62
what is the diameter of the moon
3500kms
63
what is the mass of the moon
7.35 x 10^22 kg
64
what is the distance of moon from the earth
384400 kms
65
what is the circumference of the moon
11000km
66
what is the revolution time of the moon
27.3 days
67
what is the gravitational pull of the moon
1/6 th of that of the earth
68
which planet is called the red planet
Mars
69
which planet is the fourth closest planet to sun
Mars
70
Mars completes its rotation in
24 hours and 37 minutes
71
mars completes its revolution in
687 days
72
what are the two moons of Mars
phobos and deimos
73
what is the name of the mountain present in the mars
Nix olympia which is three times larger than the Mount everest
74
which planet is known as the God of war
Mars
75
what is the name of the smallest moon of the solar system
Deimos
76
what is the height of the Mount Everest
8848 metres
77
which planet is called mini solar system
the Jupiter
78
which planet has the highest number of moons in the solar system
the Jupiter
79
how long it takes jupiter to revolve around the sun
11.86 years
80
Jupiter completes its one rotation in
9 hours 55 minutes and 30 seconds
81
mass of the Jupiter is
318 times that of our Earth
82
what is the name of the biggest storm taking place in the Jupiter which is 1.3 ktimes bigger than earth
the Great red spot
83
what planet is called the yellowish planet
SAturn
84
what is the name of the largest satellite in the solar system
Ganymede
85
the saturn completes its revolution in
29.5 years
86
what is the total number of moon does saturn have
82 moons
87
what are the important moons of SAturn
Titan, Phoene, Tethys and Mimas
88
the uranus rotates from which direction to which direction
east to west
89
what are the total number of satellites in the uranus
27
90
what is the biggest moon of the uranus
Titania
91
which planet is called the Green planet
The Uranus . it is due to the presence of methane gas
92
uranus completes its revolution in
84 years
93
Uranus completes its rotation in
16.8 hours
94
what is the fourth largest planet in the solar system
Neptune
95
what is the eight planet from the sun
Neptune
96
Neptune takes how long to revolve around the sun
165 years
97
what is the name of the spacecraft which visited neptune
Voyager 2
98
what are the total number of moon in the Neptune
14 moons
99
what is the name of the satellite which has the same atmosphere as that of Earth
The Titan
100
what is the smallest planet
Mercury
101
which planet has the fastest rotation in the solar system
The Jupiter
102
what isthe densest planet in the solar system
The earth
103
what isthe descending order of planets in terms of mass
Jupiter saturn neptune venus earth uranus mars mercury
104
what is the name of spot in the neptune which is same as that of the Planet earth
Dark green spot
105
