Jovian planets did not lose their atmosphere but many terrestrial planets did Which of the following...........

Geography Space

Jovian planets did not lose their atmosphere, but many terrestrial planets did. Which of the following factor(s) may explain the loss of atmosphere from many terrestrial planets?

1. The terrestrial planets are smaller and their lower gravity could not hold the escaping gases.

2. Terrestrial planets being near to the Sun faced more intense solar winds.

Select the correct answer using the codes given below

1 only

2 only

All of the above

None of the above

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Explanation:

Terrestrial planets are solid, e.g. Mercury, Venus, Mars,earth, whereas Jovian planets are gassy.The terrestrial planets were formed in the close vicinity of the parent starwhere it was too warm for gases to condense to solid particles. Jovianplanets were formed at quite a distant location and thereby allowing them to have gaseous atmospheres.
Gravity attracts any atmosphere and keepsit intact with a terrestrial body, for e.g. that of earth. Gravity depends on mass and size of the planet. Since the terrestrial planets were small,gravity was less and gases escaped.
The solar wind was most intense nearer the sun; so, it blew off lots of gasand dust from the terrestrial planets. The solar winds were not all thatintense to cause similar removal of gases from the Jovian planets.