Tag: solar system and sun

Questions Related to solar system and sun

The planet Jupiter is bulged at the centre and flattened at the poles because of ___________.

physics our solar system planets of the solar system solar system and sun introduction to solar system

  1. movement of gases

  2. heaviness of the planet

  3. rotation of the planet

  4. revolution of the planet

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Correct Option: C

Which of the following planets takes maximum time to complete one revolution around the Sun?

physics our solar system planets of the solar system solar system and sun introduction to solar system

  1. Mercury

  2. Jupiter

  3. Saturn

  4. Neptune

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Correct Option: D
Explanation:

Neptune takes maximum time to complete one revolution as it is the farthest planet.

Ans: Neptune

The planets revolve round the sun in _______ orbits.

physics our solar system planets of the solar system solar system and sun introduction to solar system

  1. circular

  2. spiral

  3. elliptical

  4. helical

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Correct Option: C
Explanation:

Ans: Elliptical 

The difference in the length of a mean solar day and a sidereal day is about

physics our solar system planets of the solar system solar system and sun introduction to solar system

  1. $1$ minute

  2. $4$ minute

  3. $15$ minute

  4. $56$ minute

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Correct Option: B
Explanation:

Solar day is the time taken by earth to complete one rotation about its axis with respect to sun. Sidereal day is the time taken by earth to complete one rotation about its axis with respect to distant star. There is a difference of $4$ minutes between solar day and sidereal day. Solar day is longer as earth has to rotate greater angle to attain same position with respect to sun due to its own motion (revolution) round the sun. Its position with respect to distant star remains almost fixed.

Which is the correct sequence of planets in increasing order of size?

geography the sun, the moon and the earth planets of the solar system solar system and sun introduction to solar system

  1. Saturn, Jupitar, Uranus, Neptune

  2. Jupitar, Saturn, Uranus, Neptune

  3. Jupitar, Uranus, Neptune, Saturn

  4. Neptune, Uranus, Saturn, Jupitar

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Correct Option: B
Explanation:

A star and all the objects travelling around it — planets, moons, asteroids, comets and meteoroids constitute a solar system. Our solar system is located in Milky Way galaxy. Sun is the star of our solar system. The eight planets and their natural satellites, dwarf planets and their satellites, as well as asteroids, comets and other celestial bodies revolve around the sun.

Order of the planets of solar system on the basis of their size is given as following: -

  1. Jupiter - Its diameter is 69,911 km.
  2. Saturn - Its diameter is 58,232 km.
  3. Uranus - Its diameter is 25,362 km.
  4. Neptune - Its diameter is 24,622 km.
  5. Earth - Its diameter is 6,371 km.
  6. Venus- Its diameter is 6,052 km.
  7. Mars - Its diameter is 3,390 km.
  8. Mercury- Its diameter is 2,440 km.

If the axis of rotation of the earth were extended into space then it would pass close to

physics our solar system planets of the solar system solar system and sun introduction to solar system

  1. The moon

  2. The sun

  3. The polar star

  4. The centre of mass of all the planets in the solar system

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Correct Option: C
Explanation:

A pole star is a visible star, which lies approximately directly overhead when viewed from earth's north pole or south pole. In practice the term pole star usually refers to polars, which is the current northern pole star, also known as north star. The south celestial pole lacks a bright star like polarise to mark its position.

Which of the following describes ecliptic orbit?

physics our solar system planets of the solar system solar system and sun introduction to solar system

  1. Orbit travelled by the Moon round the Sun.

  2. Path travelled by the Earth round the Sun

  3. Orbit along which Sun appears to move among the stars

  4. Orbit along which Moon appears to move among the stars

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Correct Option: C
Explanation:
An ecliptic orbit is the one, in which the Sun appears to move among all the stars.

What is Minor Planet?

geography the sun, the moon and the earth planets of the solar system solar system and sun introduction to solar system

  1. Term used to describe an astronomical object that is neither a dominant planet nor a comet

  2. It includes away planet that orbits around the sun

  3. Both A and B

  4. None of the above

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Correct Option: C
Explanation:

Minor planet is a term used to refer to a celestial object – that is not a planet or comet – which orbits the Sun. Found in 1801, Ceres, also known as a dwarf planet, was the first minor planet discovered. 

Who was the first to suggest, "A planet moves most quickly when it is closest to the sun, but slows down as it moves farther away"?

physics our solar system planets of the solar system solar system and sun introduction to solar system

  1. Johannes Kepler

  2. Galileo Galilei

  3. Tycho Brahe

  4. Edwin Hubble

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Correct Option: A
Explanation:

Kepler's law states that a line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time. So a planet moves most quickly when it is closest to the sun,as it have to cover more distance in same time but it again  slows down as it moves farther away as covering distance is less.

Which of the following is NOT a planet of our Solar System?

evs - ii our earth and our solar system solar system and sun planets and stars introduction to solar system planets sunita's experience in space space exploration

  1. Sirius

  2. Mercury

  3. Saturn

  4. Earth

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Correct Option: A
Explanation:

Planets of solar system are : Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. 
Sirius is not a planet of the Solar system. It is a star. It is the brightest star in the night sky and located close to Orion.