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GK - EDS > (50) Universe > Flashcards

(50) Universe Flashcards

1
Q

Halley’s Comet appears once in a period of

A

76 Years

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2
Q

Jupiter is larger than the earth by about

A

11 times

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3
Q

Lunar eclipse occurs on

A

Full moon

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4
Q

The hottest planet

A

Venus

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5
Q

Distance of earth and the sun in Million Kms is

A

149

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6
Q

A terrestrial planet is a planet of

A

A dense, rocky body

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7
Q

The planet having 27 moons

A

Uranus

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8
Q

the orbits of planets around the sun, or of sattelites around the earth can be

A

Circular and Elliptic

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9
Q

Fastest Planet

A

Jupiter

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10
Q

____ and ____ has no satellites

A

Mercury and Venus

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11
Q

The change in colour of stars arises due to

A

Variation in their surface temperature

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12
Q

The North Star is a part of the constellation

A

Little Dipper

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13
Q

The outermost layer of the sun is called

A

Corona

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14
Q

____ planet have the largest number of satellite in the solar system

A

Jupiter

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15
Q

The Radiant energy of the sun is transmitted in the form of

A

Short Waves

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16
Q

The planet that lies at the outermost orbit of the solar system is

A

Neptune

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17
Q

___ planet is the largest of inner planets

A

Earth

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18
Q

Tides are highest

A

when the sun, moon and earth are in line

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19
Q

Asteriods have their orbit b/w the planets

A

Mars and Jupiter

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20
Q

Year is longest on

A

Mercury

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21
Q

The bright heavenly body with a long luminous tail is called

A

A comet

22
Q

The first satellite was launched by

A

USSR

23
Q

___ planet takes the largest time to go once around the sun

A

Neptune

24
Q

Black Hole?

A
  • A body in space
  • does not allow any radiation to come out
  • this property is due to its Very Hight Density.
25
Q

Evening Star?

A

Venus

26
Q

Earth’s rank in term of size in solar system

A

5th

27
Q

The planet with the shortest rotation time around its axis is

A

Jupiter

28
Q

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

A

Gravitation and centrifugal forces

29
Q

Big Bang theory

A
  • An explosion about 10 to 15 billiion years ago

- Most astronomers believe to be the origin of the Universe

30
Q

Operation Path Finder was the mission to

A

Mars

31
Q

Black Holes are stellar objects which

A

Have intense gravitational field

32
Q

How may satellites of saturn planet

A

56

acc to wikipedia it has 62 moons out of which 53 are named

33
Q

____ and ____ planets appear as ‘Morning Star’ in the eastern sky and ‘Evening Star’ in the western sky

A

Mercury and Venus

34
Q

____ planet contain largest quantity of Carbon Dioxide 95%

A

Venus

35
Q

____ Planet reflects back to space the highest percentage of light it recives from sun

A

Venus

36
Q

___ planet takes nearly same time for a rotation on its own axis as the does the earth

A

Jupiter

37
Q

The only planet in the solar system which rotates on its own axis from East to West is

A

Uranus

38
Q

Why saturn is Unique in Solar System?

A

There is a well developed system of rings around it

39
Q

Biggest star in our galaxy

A

Proxima Centauri

40
Q

After Ibn Zubair; who observed the sun spots?

A

Galileo

41
Q

Sun Spots?

A
  • Cooler areas which move about on the Sun’s surface and show up as dark spots
42
Q

A light Year, as a unit of measurement of distances of heavenly bodies, is equal to

A

9 1/2 million kms

43
Q

Neptune takes ____ years to orbit around the sun

A

165 years

44
Q

Visible part of the sun is called

A

Photosphere

45
Q

Galileo discovered the saturn rings in

A

1610

46
Q

____ was the first to speculate that Venus is completely covered with clouds

A

Christian Huygens

47
Q

____ was first to determine that the day on the Mars was roughly 24hrs long

A

Giordano Burno

48
Q

How long does a Sun-ray take to travel from the sun to the earth

A

498 Sec

-8min 20sec

49
Q

Stars which appear single to the naked eye but are double stars when observed by a telescope, are known as

A

Bindaries

50
Q

Acc to scientific research water is presend on the surface of _____ except earth planet

A

Mars

GK - EDS (19 decks)

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