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GK - EDS > (50) Universe > Flashcards

(50) Universe Flashcards

1
Q

Morning Star?

A

Venus

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2
Q

Comets are celestial bodies moving around the solar system in

A

Elliptical or hyperbolical orbits, usually accompanied by a shining tail

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3
Q

The temperature of Sun’s outer surface is

A

6000 degree Celcius

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4
Q

______ planet of the solar system spins on its axis as the fastest rate

A

Jupiter

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5
Q

____ planet dropped from the list of planets in 2006

A

Pluto

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6
Q

_____ planet has the longest period of rotation is:

A

Venus

225 Days

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7
Q

Statement regarding shooting stars is ?

A

They are meteors

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8
Q

Watery Planet?

A

Earth

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9
Q

Solar System was discovered by

A

Copernicus

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10
Q

Huge congregation of stars that are held together by the force of gravity are known as

A

Galaxies

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11
Q

The unit of measuring distances b/w the stars is known as

A

Cosmic Kilometre

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12
Q

___ Planet looks reddish in the night sky

A

Mars

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13
Q

The planets are kept in motion in their respective orbits by:

A

Gravitation annd centrifugal force

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14
Q

The study of heavenly bodies is known as

A

Astrophysics

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15
Q

Supernova is a

A

Dying Star

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16
Q

The milky way extends through a distance of:

A

10^5 Light years

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17
Q

Atmospheric Refraction?

A

The altitudes of heavenly bodies appears to be greater than they actually are

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18
Q

the period of one year revolution of sun around the centre of galaxy is called

A

Cosmic Year

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19
Q

Cosmography?

A

is concerned with the description and mapping of the main features of the universe

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20
Q

The same side of the moon always faces the earth because?

A

The period of rotation of the moon on its axis and period of revolution around the earth is almost the same

21
Q

The light coming from stars gives the idea of their

A

Rotational Speed

22
Q

The constellation of stars appears at different postions in the sky at different times during night mainly coz?

A

Coz earth rotates about its axis

23
Q

The Sun Spots cause

A
  • Aurora australis and aurora borealis
  • Magnetic storms on the surface of the sun
  • Polar Auroras
24
Q

“Parsec” is the unit of measurement of:

A

Astronomical Distance

25
Q

The distance of the nearest star besides the sun from the earth is

A

4 light years

26
Q

Lunar eclipse does not occur every month because

A

The moon’s orbit is not all the time in the same plane as the earth

27
Q

______ celestial body bear ‘The sea of Tranquality’ and ‘The ocean of storms’.

A

Moon

28
Q

The time required by moonlight to reach the earth is

A

1.3 seconds

29
Q

The brightest star in the sky is

A

Sirius

30
Q

Lunar sea refers to

A

A dark plain on the moon

31
Q

Lunar eclipsed cause when the

A

The Earth comes b/w the sun and the moon

32
Q

The SOLAR CORONA mainly consists of

A

Molten Lava

33
Q

___ and___ planets have no satellites

A

Mercury and Venus

34
Q

____ gas is the predominant in the sun

A

Hydrogen

35
Q

Smallest planet?

A

Mercury

36
Q

____ planet is at the farthest distance from the earth

A

Neptune

37
Q

tides are caused by the gravitational pull of the

A

Sun and The moon on earth

38
Q

The solar wind is composed of

A
  • Outward stream of protons on the sun surface
  • Ionized gas
  • Plasma
39
Q

Solar Eclipse occurs when

A

Moon Comes b/w sun and earth

40
Q

The largest planet of solar system

A

Jupiter

41
Q

Sattelites of Jupiter

A
  • Lo
  • Europa
  • Gennymade
  • Callisto
42
Q

Titan is the satellite of which planet?

A

Saturn

43
Q

Moon is called a satellite of the earth because

A

It produces tides on earth

44
Q

Comets revolved around

A

Sun

45
Q

The position of a planet when it is nearest to the sun, is called

A

Perihelion

46
Q

Red Planet?

A

Mars

47
Q

Earth’s Twin?

A

Venus

48
Q

The Saturn Rings were discovered by

A

Galileo

GK - EDS (19 decks)

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