Question

17 multiple choice 4 points a huge interstellar cloud collapsed into a rotating disk with a central bulge. what did this object become? the disk was a solar nebula and the bulge became the sun. they formed the outer planets which eventually met up with the sun. the disk was the solar nebula and the bulge became jupiter. a large belt containing asteroids in a gap between the orbits of mars and jupiter. 18 multiple choice 4 points why are uranus and neptune known as ice giants rather than gas giants? uranus and neptune are much colder than jupiter or saturn. their interiors may contain liquid water and other materials that would be ices if not for the hot cores of those planets. uranus and neptune are much small than jupiter or saturn. their interiors may contain large quantities of water ice and other ices under tremendous pressure.

Explanation:

For question 17: According to the solar nebula theory, when an interstellar cloud collapses, it forms a rotating disk (solar nebula) with a central bulge. The central bulge becomes the Sun, while the disk material forms planets and other solar system bodies.
For question 18: Uranus and Neptune are classified as ice giants because their interiors are thought to hold large amounts of water ice and other ices (like ammonia and methane ice) under extreme pressure, unlike gas giants Jupiter and Saturn which are dominated by hydrogen and helium.

Answer:

1. The disk was a solar nebula and the bulge became the Sun.
2. Their interiors may contain large quantities of water ice and other ices under tremendous pressure.