The interior rotation of Uranus is considerably slower than the rotation rate of the clouds on its surface. How have astronomers measured the interior rotation rate?
A) by measuring the differential rotation between the poles and the equator
B) The moons have locked into synchronous rotation at the same rate.
C) by measuring the wobble of the magnetosphere
D) by measuring the speeds of the cloud layers at different depths and extrapolating to the surface

Question

Quizplus · Accepted Answer

Astronomers have measured the interior rotation rate of Uranus by observing the wobble of its magnetosphere, which is influenced by the planet's internal rotation.

The Interior Rotation of Uranus Is Considerably Slower Than the Rotation