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- 1. Multiple ChoiceKepler's first law states that the orbits of the planets around the sun areCirclesEllipsesSpheresirregular shapes
- 2. Multiple ChoiceHow does changing the mass of objects affect the force of gravity?Increasing mass will decrease gravityDecreasing mass will increase gravityMass will not affect gravityIncreasing mass increases gravity
- 3. Multiple ChoiceHow does changing the distance between objects affect the force of gravity?Decreasing distance increases gravityincreasing distance increases gravityDistance does not affect gravity
- 4. Multiple ChoiceWhat did Kepler say in his third law about the velocity of objects in large orbits and distances compared to smaller objects and distances?The velocity is faster in larger orbitsThe velocity is slower in larger orbitsThe velocity is constant no matter what size the orbit isThere is no relationship between velocity and size of orbit
- 5. Multiple ChoiceThe point in Earth's orbit when it is closest to the sun is called theAphelionperihelionmaximum ellipseminimum elipse
- 6. Multiple ChoiceThe point in the Earth's orbit when it is furthest from the sun is calledaphelionperihelionminimum ellipsemaximum ellipse
- 7. Multiple ChoiceThe Earth is moving slowestat its perihelionat its aphelionwhen perpendicular to the major axisduring our winter
- 8. Multiple ChoiceThe Earth is moving fastest in its orbit when it iswinterat its perihelionat its aphelionwhen it is farthest away
- 9. Multiple ChoiceThe amount of time it takes Earth to spin on its axis is calledan houra montha daya year
- 10. Multiple ChoiceThe planet with the shortest year isEarthNeptunePlutoMercury
- 11. Multiple ChoiceWhy does the moon orbit the Earth and not the Sun?The Earth is bigger than the SunThe sun is too close to the moonThe Earth is closer to the moon.The Sun did not exist when the moon formed
- 12. Multiple ChoiceWhen the distance between foci is increased, what happens to the shape of the ellipse?it gets rounderit gets flatterits major axis decreasesits minor axis increases
- 13. Multiple ChoiceThe rounder the ellipse, the ______________ the eccentricitylowerhigher
- 14. Multiple ChoiceHow many laws of planetary motion did Kepler discover?1234
- 15. Multiple ChoiceWhich scientist discovered the law of gravitational attraction?KeplerBraheGalileoNewton
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