Tag: planets and stars

Questions Related to planets and stars

Multiple choice 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

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

  1. Sirius

  2. Mercury

  3. Saturn

  4. Earth

Reveal answer Fill a bubble to check yourself
A Correct answer
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.

Multiple choice 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

The largest planet of the solar system is :

  1. Jupiter

  2. Mars

  3. Neptune

  4. None of the above

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The largest planet of the solar system is Jupiter. It is the largest by mass, volume, and surface area among other statistics. Here are the critical measurements of Jupiter as well as a few other interesting facts about the planet.
Here are Jupiter's measurements: mass $1.8981 \times 10^{27}\ kg$, volume $1.43128 \times 10^{15}\ km^{3}$, surface area $6.1419 \times 10^{10}\ km^{2}$, and a mean circumference of $4.39264 \times 10^{5}\ km$. Despite its size, it only has a density of $1.326\ g/cm^3$, which is less than one fourth of Earths density. The low density is one way scientists are able to determine that it is made mostly of gases and probably does not have a solid core.

Multiple choice 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

The credit for the discovery of rings of the Saturn goes to

  1. Kepler

  2. Galileo

  3. Newton

  4. Copernicus

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In 1610, the year after Galileo Galilei first turned a telescope to the sky, he became the very first person to observe Saturn's rings, though he could not see them well enough to discern their true nature. In 1655, Christiaan Huygens was the first person to describe them as a disk surrounding Saturn.

Multiple choice 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

The difference between the equatorial diameter and polar diameter ofthe Earth is about

  1. 43km

  2. 82km

  3. 56km

  4. 101km

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Equitorial diameter of the earth is about $12756$ km and The polar diameter of earth is $12713.6$km

Difference $=(12756-12713.6)$km
Around $43$km $($options$)$