According to Our Theory of Solar System Formation,why Did Uranus

question 53

Multiple Choice

According to our theory of solar system formation,why did Uranus and Neptune end up to be much less massive than Jupiter and Saturn?

• A)Ices were able to condense at the distance of Jupiter and Saturn,but only rock and metal could condense at the distances of Uranus and Neptune.
• B)Particles in the solar nebula were more spread out at greater distances,so that accretion took longer and there was less time to pull in gas before the solar wind cleared the nebula.
• C)The colder gas in the outer regions of the solar nebula had less gravity and therefore could not gather up into such large balls as it could closer in.
• D)The size differences are thought to be a random coincidence.

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Definitions:

Semen

A fluid containing spermatozoa and secretions from the male reproductive glands, involved in the fertilization of female ova.

Secondary Sex Characteristic

Physical features that emerge during puberty and distinguish the two sexes but are not directly involved in reproduction, such as facial hair in males and breast development in females.

Primary Sex Characteristics

The biological and physiological features, such as the reproductive organs, that distinguish males and females.

Masculinity

A set of attributes, behaviors, and roles associated with boys and men as socialized in a given society.