Question

How was the rotation rate of Jupiter's core determined?

-by observing the Great Red Spot
-by watching lo move across the disk of Jupiter
-by radio observations of Jupiter's rapidly spinning magnetosphere
-by measuring the oblateness of Jupiter's disk

Answer 1

The rotation rate of Jupiter's core was determined by analyzing variations in radio waves coming from Jupiter's magnetosphere, which reflects the inner rotation of the planet.

Step-by-step explanation:

The rotation rate of Jupiter's core and mantle was determined by observing periodic variations in radio waves emitted by its magnetosphere. The magnetic field of Jupiter, which controls these radio emissions, originates deep inside the planet. Therefore, these radio waves reflect the rotation of Jupiter's interior. Observations have shown that Jupiter has the shortest 'day' of any planet with a rotation period of 9 hours 56 minutes. Similar methodologies were employed for measuring the rotation periods of other planets such as Saturn, Uranus, and Neptune.

Answer 2

C. by radio observations of Jupiter's rapidly spinning magnetosphere

Step-by-step explanation:

Jupiter refers to one of the planetary bodies in the solar system. It is considered to be the largest (twice as large or big as every other combined) planetary body and the fifth (5th) from the Sun.

Jupiter is a planet that rotates rapidly and as a result it is referred to as being noticeably oblate. It has the fastest rotation rate among the planets of the solar system because it completes a rotation about an axis in 9.9 hours.

The rotation rate of Jupiter's core was determined by radio observations of Jupiter's rapidly spinning magnetosphere.