Matching Pairs Protoplanet TheoryOnline version Direction: Match the different stages of Protoplanet Theory formation on the left side with the illustration it represents on the left side. You have only 3 trials to accomplish the activity, so be careful in answering. by Easci Club 1 Cloud collapse to a rotating disc. 2 This dust provide sites for condensation of gas. 3 Milky Way galaxy is filled with cold clouds of molecular hydrogen gas, also filled with dust. 4 Evolves slower into thin disk of particles and a thicker outer disk of gases 5 Cloud begins to collapse under self gravity and dust begins to accrete. 6 Proto-Sun forms before planets Formation of outer region Formation of inner region