Celestial Orbit Characteristics Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. In general, what are Kepler's Laws?

Question 2 2. What is an elliptical orbit?

Question 3 3. A planet's average distance from the sun is equal to the:

Question 4 4. If a planet's orbit all of a sudden became more elongated, then:

Question 5 5. At aphelion:

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Question 6 6. An object moving with a speed faster than escape velocity will follow which path?

Question 7 7. A planet is orbiting its star at a maximum radius of 1.2 x 10^7 meters. If the mass of the star is 2 x 10^30 kg, and the current radius is 0.9 x 10^7 meters, what is the velocity of the orbit?

Question 8 8. This is an example of an open curve:

Question 9 9. This is the extent to which an orbit deviates from a circle:

Question 10 10. If a planet has an orbital eccentricity equal to 0.70, then its orbit is:

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Question 11 11. At perihelion:

Question 12 12. This is the minimum velocity a body needs to escape the gravitational attraction of a more massive body:

Question 13 13. At perihelion:

Question 14 14. A planet is orbiting its star at a maximum radius of 1.2 x 10^7 meters. If the mass of the star is 2 x 10^30 kg, what is the time period of the orbit?

Question 15 15. A celestial object moving with a speed equal to escape velocity will:

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Question 16 16. A __is one of two fixed points from which an ellipse can be generated:

Question 17 17. Stored energy subject to gravitational attraction by another body is called:

Question 18 18. The planets in our solar system all have ___orbits:

Question 19 19. Which of the following orbital eccentricities is NOT an elliptical orbit?

Question 20 20. This is a conic section obtained when a right circular cone is cut by a plane that intersects the cone's axis and surface to produce a closed elongated curve:

Celestial Orbit Characteristics Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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