Tag: planets

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Multiple choice evs - i our earth and our solar system solar system and sun planets and stars planets sunita's experience in space space exploration

A ring system around planet Uranus was discovered by:

  1. Phobos and Deimos

  2. Prof.J.C.Bhattacharya and K.Kuppuswamy

  3. William Herschel

  4. Galileo
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ring system around planet Uranus is discovered by William Herschel detailing his observation of Uranus in ${ 18 }^{ th }$ century

Definitive discovery was made by  James L. Elliot, Edward W. Dunham and Jessica Mink.

Multiple choice evs - i our earth and our solar system solar system and sun planets and stars planets sunita's experience in space space exploration

Planets are divided in to two groups based on their characteristic.

Group - 1 Group - 2
- Structure of planets resemble to earth - Structure of planets resembles Jupiter
- They have fewer natural satellites - They have large number of natural satellites 
- They have thin atmosphere - Rings are seen around planets.

Which of the following are included in Group - 2?

  1. Mercury and Venus

  2. Saturn and Mercury

  3. Jupiter and Saturn

  4. Jupiter and Venus
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

All the planets among Jupiter, Saturn, Neptune and Uranus all in the second group.


Hence, for among given options the pair Jupiter and Saturn fall in second group.

Answer-(C)

Multiple choice evs - i our earth and our solar system solar system and sun planets and stars planets sunita's experience in space space exploration

Asteroid or planetoids are _____________.

  1. shining stars near the Earth

  2. shooting stars

  3. meteorites

  4. a swarm of small bodies revolving round the sun between the orbits of Mars and Jupiter
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Asteroids and planetoids are small bodies of varying sizes ranging from few kilometres to few hundred kilometres of diameter. They are found in a large number in a belt between Mars and Jupiter and they revolve around the sun like planets but are not large enough to be called planets.
  • Sometimes very small asteroids enter into earth's atmosphere. If these bodies reach the earth's surface then they are called meteorites. Most of the time they get burned up due to the friction caused by the atmosphere of the earth and thus appear like shooting stars.
  • Hence option D is correct.