Question

The jovian planets have high masses and hence generate powerful gravitational fields, and yet they have low average densities. what does this fact indicate about their interiors?

Answer 1

The fact that the jovians planets have high masses and hence generate powerful gravitational fields, but they have a low average densities indicates about their interiors composed mainly of very light elements, such as H and He. The jovians planets compose of only very light elements like He and H.