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Science M.C.Q. [I MARKS]

Stars and the Solar System · Bihar Board (BSEB) STD 8 (BSEB - English Medium). 20 questions.

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M.C.Q. [I MARKS]

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20 questions · timed · auto-graded

MCQ 11 Mark
Phases of the Moon occur because:
  • A
    We can see only that part of the Moon which reflects light towards us.
  • B
    Our distance from the Moon keeps changing.
  • C
    The shadow of the Earth covers only a part of the Moon's surface.
  • ✓
    The thickness of the Moon's atmosphere is not constant.
Answer
Correct option: D.
The thickness of the Moon's atmosphere is not constant.
Explanation:
The size of the illuminated part of the moon visible from the Earth increases each day after the new moon day. After the full moon day, the sunlit part of the moon visible from the Earth decreases in size every day. This process leads to the phases of the Moon.
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MCQ 21 Mark
The two pointer stars the line passing through which points to the direction of pole star are a part of the constellation called:
  • ✓
    Ursa Major.
  • B
    Orion.
  • C
    Cassiopeia.
  • D
    Leo Major.
Answer
Correct option: A.
Ursa Major.
Explanation:
Ursa Major is the constellation which reminds us of a large ladle or a question mark in the night sky.
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MCQ 31 Mark
Which of the following is not a planet of the Sun?
  • ✓
    Sirius.
  • B
    Mercury.
  • C
    Saturn.
  • D
    Earth.
Answer
Correct option: A.
Sirius.
Explanation:
Sirius is the brightest star in the sky. It is located close to the Orion constellation.
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MCQ 41 Mark
Which of the following are non$-$luminous objects?
$A.$ Orion.
$B.$ Morning Star.
$C.$ Moon.
$D.$ Pole star.
  • A
    $A$ and $B$
  • B
    $B$ and $C$
  • C
    $B$ and $D$
  • ✓
    Only $C$
Answer
Correct option: D.
Only $C$
The moon does not have light of its own. We are able to see the moon because the sunlight falling on its surface gets reflected towards us.
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MCQ 51 Mark
After the Sun, the next nearest star to the Earth is:
  • A
    Alpha Centauri.
  • B
    Polestar.
  • C
    Sirius.
  • ✓
    Proxima Centauri.
Answer
Correct option: D.
Proxima Centauri.
The next nearest star to Earth is ‘Proxima Centauri’. It is $4.24$ light years from the Sun. Its light will take $4.24$ years to reach us.
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MCQ 61 Mark
Which of the following is not a member of the Solar System?
  • A
    An asteroid.
  • B
    A satellite.
  • ✓
    A constellation.
  • D
    Earth.
Answer
Correct option: C.
A constellation.
Explanation:
The stars forming a group that has a recognisable shape is called a constellation. For example, Ursa Major is a constellation.
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MCQ 71 Mark
The brightest star in the night sky called Sirius is located close to one of the following constellations. This constellation is:
  • A
    Great Bear.
  • B
    Leo Major.
  • C
    Cassiopeia.
  • ✓
    Orion.
Answer
Correct option: D.
Orion.
Explanation:
Sirius is the brightest star in the sky. It is located close to the Orion constellation.
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MCQ 81 Mark
The smallest planet of the solar system is:
  • A
    Earth.
  • B
    Mars.
  • ✓
    Mercury.
  • D
    Saturn.
Answer
Correct option: C.
Mercury.
Explanation:
Mercury is the smallest planet of the Solar system. It is nearest to the Sun.
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MCQ 91 Mark
Ursa Major is a:
  • A
    Star.
  • B
    Planet.
  • ✓
    Constellation.
  • D
    Satellite.
Answer
Correct option: C.
Constellation.
Explanation:
Ursa Major is the constellation which reminds us of a large ladle or a question mark in the night sky. It is also known as the Big Dipper, the Great Bear or the Saptarshi.
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MCQ 101 Mark
Which of the following planets show phases like the moon?
$A.$ Venus.
$B.$ Mercury.
$C.$ Jupiter.
$D.$ Mars.
  • ✓
    $A$ and $B$
  • B
    $B$ and $C$
  • C
    $A$ and $C$
  • D
    $C$ and $D$
Answer
Correct option: A.
$A$ and $B$
Mercury and Venus shows phases like the Moon. They have the orbits which are smaller than the Earth and exhibit the full range of phases like the moon.
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MCQ 111 Mark
Which of the following constellations can be seen in the night sky during the winter season?
$A.$ Orion.
$B.$ Ursa Major.
$C.$ Leo Major.
$D.$ Cassiopeia.
  • A
    $A$ and $B$
  • B
    $B$ and $C$
  • ✓
    $A$ and $D$
  • D
    $B$ and $D$
Answer
Correct option: C.
$A$ and $D$
The constellation Orion is visible during winter in the late evenings. It also has seven or eight bright stars. It is also called the Hunter. Cassiopeia is another prominent constellation in the northern sky. It is visible during winter in the early part of the night.
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MCQ 121 Mark
Which of the following is not a member of the Solar System?
  • A
    Asteroids.
  • B
    Morning Star.
  • C
    Satellites.
  • ✓
    Constellations.
Answer
Correct option: D.
Constellations.
Explanation:
The stars forming a group that has a recognizsable shape is called a constellation. For example, Ursa Major is a constellation.
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MCQ 131 Mark
Which of the following is the hottest planet in the Solar System?
  • A
    Earth.
  • B
    Mercury.
  • ✓
    Venus.
  • D
    Mars.
Answer
Correct option: C.
Venus.
Venus is the hottest planet of the solar system. It is the second planet from the Sun and has a temperature that is maintained at $462$ degrees Celsius.
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MCQ 141 Mark
The agency responsible for the development of space science programmes in India is:
  • A
    $INSAT$
  • B
    $ORS$
  • C
    $IRS$
  • ✓
    $ISRO$
Answer
Correct option: D.
$ISRO$
$ISRO$ is also known as Indian Space Research Organisation is the agency responsible for the development of space science programs in India.
The Indian Space Research Organisation is the space agency of the Government of India headquartered in the city of Bengaluru.
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MCQ 151 Mark
Which of the following constellations are visible in the summer season?
$A.$ Cassiopeia.
$B.$ Orion.
$C.$ Leo Major.
$D.$ Big Bear.
  • A
    $A$ and $B$
  • B
    $B$ and $C$
  • ✓
    $A$ and $C$
  • D
    $C$ and $D$
Answer
Correct option: C.
$A$ and $C$
Ursa Major can be seen during summer time in the early part of the night. It has seven prominent stars. Leo Major is visible in the northern hemisphere around the spring. It is easily identifiable through may.
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MCQ 161 Mark
The distances between the various celestial objects are usually expressed in the unit of:
  • A
    Kilometres.
  • B
    Light minutes.
  • ✓
    Light years.
  • D
    Light seconds.
Answer
Correct option: C.
Light years.
Explanation:
Light year is the unit used to express distance between the various celestial bodies. Light year is the distance travelled by light in one year.
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MCQ 171 Mark
Asteroids revolve around the Sun between the orbits of the planets:
  • A
    Mars and Earth.
  • B
    Venus and Mars.
  • ✓
    Jupiter and Mars.
  • D
    Mars and Saturn.
Answer
Correct option: C.
Jupiter and Mars.
Explanation:
There is a large gap in between the orbits of Mars and Jupiter. This gap is occupied by a large number of small objects that revolve around the Sun. These are called asteroids.
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MCQ 181 Mark
Which of the following is not a planet?
  • A
    Mercury.
  • B
    Saturn.
  • C
    Mars.
  • ✓
    Moon.
Answer
Correct option: D.
Moon.
Explanation:
Moon is the natural satellite of the Earth. It revolves around the Earth.
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MCQ 191 Mark
The planet with a system of well-developed rings encircling it is:
  • A
    Jupiter.
  • B
    Venus.
  • ✓
    Saturn.
  • D
    Neptune.
Answer
Correct option: C.
Saturn.
Explanation:
Saturn is the planet having a well-developed system of rings around it. These rings are not visible with the naked eye. They can be observed with a small telescope.
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MCQ 201 Mark
The biggest planet of the solar system is:
  • A
    Mars.
  • B
    Saturn.
  • C
    Mercury.
  • ✓
    Jupiter.
Answer
Correct option: D.
Jupiter.
Explanation:
Jupiter is the biggest planet of the Solar system. It is so large that about 1300 earths can be placed inside this giant planet.
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