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- 1. Multiple ChoiceThe theory that explains the formation of the solar system is called ____.Nebulis TheoryNebular TheoryBig Bang TheoryBig Nebulan Theory
- 2. Multiple ChoiceWhat caused the nebula to collapse and start spinning?SupernovaAsteroid collisionBig BangNearby star exploded
- 3. Multiple ChoiceWhat is the period of rotation?How long it takes a planet to orbit the sunHow fast a planet orbits the sunHow fast a planet spinsHow elliptical a planet's orbit is
- 4. Multiple ChoiceWhat is the period of revolution?How long it takes a planet to orbit the sunHow long it takes a planet to spin aroundHow fast a planet spinsHow elliptical a planet's orbit is
- 5. Multiple ChoicePlanets move in elliptical orbits is Kepler's _____ Law.1st2nd3rd4th
- 6. Multiple ChoicePlanets that are farther from the sun have larger orbits is Kepler's ___ Law.1st2nd3rd4th
- 7. Multiple ChoiceWhat is the shape of a planet's orbit?circularellipticalsphericalround
- 8. Multiple ChoiceLine drawn from the sun to planet sweeps out equal areas in equal time is Kepler's _____ Law.1st2nd3rd4th
- 9. Multiple ChoiceThe average distance between the Earth and the sun is a(n) ____.light yearlight minuteastronomical yearastronomical unit
- 10. Multiple ChoiceKepler's 2nd Law states that a planet's velocity is ____ when farther from the sun.fastestslowestunchangedthe same
- 11. Multiple ChoiceNebulae are primarily composed of what element?HydrogenHeliumOther hard elementsZinc
- 12. Multiple ChoiceA giant sphere of glowing gases is a ___________GalaxyLight-yearStarMagnitude
- 13. Multiple Choice
The __________ has planets, moons, comets, and asteroids.solar systemearthrotationUnited States - 14. Multiple Choicethe planets of the solar system formed asthe center of the gas cloud cooledplanetesimals flattened into a rotating diskplanetesimals collided into one anotherthe sun absorbed extra gas and dust from the solar system
- 15. Multiple ChoiceHow long ago was our sun formed?10 million years ago5 million years ago4.5 billion years ago2 billion years ago
- 16. Multiple ChoiceWhat force acted on the massive nebula to collapse it and eventually form our sun?electrostatic forcestrong forceweak forcegravity
- 17. Multiple ChoiceWhat is the nebular hypothesis?Prediction about how the universe was formedPrediction of how the moon was formedPrediction of how comets were formedPrediction of how the Solar System was formed
- 18. Multiple Choicethe process that provides the sun with its energysolar flarePhotosphereradiative zonenuclear fusion
- Answer choicesTagsAnswer choicesTags