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- 1. Multiple ChoiceThe Nebular Theory is:A theory on how the Milky Way galaxy was formedA theory on how the universe was formedA theory on how the solar system will be destroyedA theory on how the solar system was formed
- 2. Multiple ChoiceA nebula is:A cloud of iceA cloud of dust and gasA cloud of just gasA cloud of just dust
- 3. Multiple ChoiceThe most abundant gases in a nebula are:Hydrogen & OxygenNitrogen & OxygenHydrogen & HeliumOxygen & Helium
- 4. Multiple ChoiceA nebula starts to move because:A nearby supernovaA nearby starA passing spaceshipA passing comet
- 5. Multiple ChoiceA nebula starts to collapse because of:A nearby star shining it's lightA passing spaceshipA passing cometGravity
- 6. Multiple ChoiceAs a nebula collapses it also begins:ExpandRotateShakeTurn to ice
- 7. Multiple ChoiceA nebula collapses down into a disk known called:A compact diskAn irregular cloudAn accretion diskAn circular disk
- 8. Multiple ChoiceWhat forms in the very center of the accretion disk?A protosunA planetA protoplanetA planetesimal
- 9. Multiple ChoiceWhat is forming in the accretion disk away from the center?LightProtostarsPlanetesimalsHydrogen
- 10. Multiple ChoiceThe planetesimals keep:Colliding and breaking apartColliding and sticking togetherColliding and bouncing aroundBreaking down into smaller pieces
- 11. Multiple ChoiceThe group of inner planets are known as:The Terrestrial PlanetsThe Gas GiantsThe Outer PlanetsThe Hallow Planets
- 12. Multiple ChoiceWhat caused the lighter elements to leave the terrestrial planets?Gravity from the Gas GiantsNothing, the lighter elements stayedGravity from the SunHeat from the Sun
- 13. Multiple ChoiceThe group of outer planets are known as:The Terrestrial PlanetsThe Gas GiantsThe Inner PlanetsThe Rocky Planets
- 14. Multiple Choice
Why did the lighter elements stay in the Gas Giants?
Just because the solar wind does not affect these planets
Because they less dense
Because the solar wind does not affect these planets AND their own gravity is strong enough
Just because their own gravity is strong enough
- 15. Multiple Choice
How long ago did these nebular processes start?
4.6 years ago
4.6 million years ago
5.6 billion years ago
4.6 billion years ago
- 16. Multiple ChoiceIntense pressure in the protosun (protostar) caused:Fire in the Sun to startHelium to break down into HydrogenNuclear Fusion to startNuclear Fusion to end
- 17. Multiple ChoiceWhat percentage of the nebula will the Sun accumulate?99%1%50%75%
- 18. Multiple ChoiceThe shape of the planets and dwarf planets after accumulating all their material is:IrregularA SphereAn OvalA disk
- 19. Multiple ChoiceWhat materials could not survive the heat where the rocky planets were formed?Gamma RaysPlasmaIce and GasRocks
- 20. Multiple ChoiceWhat two objects do scientists study to learn about the formation of the solar system?Comets & AsteroidsComets & ExoplanetsExoplanets & AsteroidsAsteroids & Distant Stars
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