UNIVERSE
SOLAR SYSTEM FORMATION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
disk.
|
|
|
sphere.
|
|
|
star.
|
|
|
nebula.
|
Detailed explanation-1: -44 The Nebular Theory This states that the solar system developed out of an interstellar cloud of dust and gas, called a nebula .
Detailed explanation-2: -As a ball of gas collapses, its gravitational potential energy changes. Half of this change is radiated away, the other half heats up the collapsing cloud. So the very central portions of the cloud are getting denser and hotter.
Detailed explanation-3: -Gravitational collapse Before it was moulded into a neat set of planets, every scrap of matter in the solar system was part of a gigantic nebula-a floating interstellar cloud. This giant cloud was made up of dust, hydrogen, and other gases. It began to collapse in on itself after becoming gravitationally unstable.