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- 1. Multiple Choice
What is the reason for the motion of the moon on its orbit?
The gravitational force exerted on the Earth by the moon
The gravitational force exerted by the sun
The gravitational force exerted by the planets
The gravitational force exerted on the Moon by the earth
- 2. Multiple ChoiceThe path a planet travels around the sun is called itsorbitellipsebarycenterprecession
- 3. Multiple ChoiceA planet moves __________ when it is farthest from the sun.fasterslower
- 4. Multiple Choice
Which planet will take the most amount of time to revolve around the Sun?
Mercury
Venus
Earth
Mars
- 5. Multiple ChoiceAn ellipse is drawn around two points calledaphelionperihelionfociaxis
- 6. Multiple Choice
When a planet orbits the Sun, one of the foci of the elliptical orbit is
the axis
the radius
the center
the Sun
- 7. Multiple ChoiceKepler's first law states that the orbits of the planets are oval in shape orellipsesperfect circles
- 8. Multiple ChoiceKepler's 2nd Law deals withthe shape of the planets' orbitsthe speed/area the planet travelsthe length of time it takes the planet to orbit the sun
- 9. Multiple Choice
Kepler’s third law states
The orbit of a planet around the sun is an ellipse, with the sun at one focus
The semimajor axis is equal to the planet’s average distance from the sun
The square of the orbital period of a planet is proportional to its orbital radius
None of these answers is correct
- 10. Multiple ChoiceAccording to Kepler's 3rd law, the square of the time it takes for an object to orbit, T, is directly related to the cube of the distance, r, between the object and what it is orbiting.
What this means is that if a satellite moves away from what it is orbiting,the larger the constant k is.the smaller the constant k is.the longer the orbital period is.the shorter the orbital period is. - 11. Multiple Choice
The period of a satellite in a circular orbit of radius R is T. The period of another satellite in circular orbit of radius 4R is
8T
2T
- 12. Multiple Choice
A line drawn from a planet to the Sun always sweeps over equal areas in equal intervals of time, when the planet moves further from the sun, the planet will move
Faster
Slower
Constant at every point
None of the above
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