According to Our Theory of Solar System Formation, Why Did

question 38

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)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.
• 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)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.
• D)The size differences are thought to be a random coincidence.

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Definitions:

Two-wire Control

A control circuit configuration using two wires to connect the control element, typically for simple on/off operations.

No-voltage Drop-out

A feature in electrical control circuits that causes the device to trip or shut off when the supply voltage falls below a certain level, enhancing safety.

Low-voltage Drop-out

A protective feature in electrical devices that causes them to turn off when voltage levels fall below a specified threshold.

Motor Stator

The motor stator is the stationary part of an electric motor, consisting of coils which create a magnetic field that induces rotation in the motor's rotor.