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Astronomy 1400 Review; Test 2

Astronomy 1400 Review; Test 2 - Astronomy 1400 Review for...

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Astronomy 1400 Review for Test 2 Please make sure you Carefully read each chapter Study the “ summary of key concepts ” at the end of each chapter. Know the material we have covered in class . The following is a review of the material discussed in class. All questions can be answered in a few words or sentences. All of these questions were answered in class or are in the text. If you need help with a particular question I will be happy to help provided you first make a significant EFFORT to answer the question on your own. Please bring an orange scantron and #2 pencil to the test: it will be 50 questions multiple choice. Know your “R” number!! You will not need a calculator. All of this review may not be on test 2—the extent of coverage will be announced in class. Anything not covered on test 2 will be covered on test 3. For Chapter 4, begin with question 8 (1 through 7 were on test 1). Chapter 4 1. What is the difference between speed, velocity, and acceleration? What are their units? 2. Know the accomplishments of Sir Isaac Newton that we discussed in class. 3. What are Newton’s Three Laws of Motion? Give some examples of Newton’s laws at work. 4. What is the mathematical definition of momentum and angular momentum? 5. Explain briefly as we did in class how Newton’s Laws lead to the law of conservation on momentum. 6. What is angular momentum and torque? What is the law of conservation of angular momentum? 7. Do we need to constantly fuel planets to spin and revolve? Do spacecraft constantly need fuel for propulsion through space? Why or why not? 8. What is the law of conservation of energy? 9. What are the three basic categories of energy? 10. What is temperature on a microscopic level? How is temperature different from heat? 11. What does an objects gravitational potential energy depend upon? 12. Is energy stored in matter itself? What is the meaning of E=mc 2 ? 13. Who first wrote out the law of gravity mathematically? 14. What is Newton’s law of gravity mathematically? If the mass of an object doubles, how does the force of gravity between this object and another change? What if the distance between the objects doubles? 15. If you drop a mass on a planet, does the acceleration of gravity depend upon the planet you are on? If so, how? Does it depend upon the mass of the object that you dropped? 16. What is the difference in Mass and Weight? What is your mass in free fall? What is your weight? 17. How does an apple falling to Earth have any connection to the ideas that explain the moon orbiting? (Newton’s Apple Story) 18. Do heavy objects fall faster than light ones (when there is no air resistance)? 19. How did Newton correct Kepler’s first Law? Third law? 20. How did Newton interpret Kepler’s second law? 21. Can orbits change spontaneously? Why or why not? Hint: think about conservation of energy 22. What is an escape velocity? Does it depend upon the objects mass?
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