(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

22
Q

The first satellite was launched by

23
Q

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

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
Evening Star?
Venus
26
Earth's rank in term of size in solar system
5th
27
The planet with the shortest rotation time around its axis is
Jupiter
28
The planets are kept in motion in their respective orbits by the
Gravitation and centrifugal forces
29
Big Bang theory
- An explosion about 10 to 15 billiion years ago | - Most astronomers believe to be the origin of the Universe
30
Operation Path Finder was the mission to
Mars
31
Black Holes are stellar objects which
Have intense gravitational field
32
How may satellites of saturn planet
56 | acc to wikipedia it has 62 moons out of which 53 are named
33
____ and ____ planets appear as 'Morning Star' in the eastern sky and 'Evening Star' in the western sky
Mercury and Venus
34
____ planet contain largest quantity of Carbon Dioxide 95%
Venus
35
____ Planet reflects back to space the highest percentage of light it recives from sun
Venus
36
___ planet takes nearly same time for a rotation on its own axis as the does the earth
Jupiter
37
The only planet in the solar system which rotates on its own axis from East to West is
Uranus
38
Why saturn is Unique in Solar System?
There is a well developed system of rings around it
39
Biggest star in our galaxy
Proxima Centauri
40
After Ibn Zubair; who observed the sun spots?
Galileo
41
Sun Spots?
- Cooler areas which move about on the Sun's surface and show up as dark spots
42
A light Year, as a unit of measurement of distances of heavenly bodies, is equal to
9 1/2 million kms
43
Neptune takes ____ years to orbit around the sun
165 years
44
Visible part of the sun is called
Photosphere
45
Galileo discovered the saturn rings in
1610
46
____ was the first to speculate that Venus is completely covered with clouds
Christian Huygens
47
____ was first to determine that the day on the Mars was roughly 24hrs long
Giordano Burno
48
How long does a Sun-ray take to travel from the sun to the earth
498 Sec | -8min 20sec
49
Stars which appear single to the naked eye but are double stars when observed by a telescope, are known as
Bindaries
50
Acc to scientific research water is presend on the surface of _____ except earth planet
Mars