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