Solar System Formation

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Across
  1. 1. the name for the four inner rocky planets like earth that are made of high density materials
  2. 4. a large body in orbit around a star that is in process of becoming a planet
  3. 5. the process where a young , molten earth separated into layers ( curst , mantle , core ) based on density
  4. 7. Cloud of dust and gas
  5. 8. a measure of mass per volume , this property determined which materials sank to the core and which stayed at the surface
  6. 9. a type of unstable chemical element that decays and provides the internal energy needed for mantle conection
Down
  1. 2. the process where gravity pulls small particles together to form large bodies like planets
  2. 3. decay provides heat for early earth to stay molten and differentiate into layers
  3. 6. the force that caused the solar nebula to collapse and later pulled the densest materials to earths center
  4. 10. the heavy element that sank to the core during earth formation