The Interior Rotation of Uranus Is Considerably Slower Than the Rotation

question 41

Multiple Choice

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

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