Modern Physics Overview 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. What was discovered about cathode rays and the electric charge in a CRT with J. J. Thomson's first experiment?

Question 2 2. When J. J. Thomson first discovered the electron, he did not call it that. What did he call it?

Question 3 3. The cathode and anode in a cathode ray tube carry which of the following charges?

Question 4 4. In J. J. Thomson's 2nd experiment, he discovered that the charge in the cathode rays was negative. How did he find this out?

Question 5 5. Which of the following is Yucca Mountain in Nevada known for?

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Question 6 6. What is the term used to describe an accident that involves severe overheating of the nuclear reactor?

Question 7 7. Why is nuclear power thought to be a 'climate friendly' form of energy?

Question 8 8. Which of the following terms describes an illness caused by exposure to a large dose of radiation over a short period of time?

Question 9 9. Which of the following would be good at conducting electricity?

Question 10 10. Why are metals shiny?

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Question 11 11. Why are metals malleable?

Question 12 12. What is the electron sea model?

Question 13 13. Which of the following has a mass of 1 and an atomic number of 1?

Question 14 14. Which of the following can be shielded by a piece of paper?

Question 15 15. Despite human skin providing protection against alpha particles, why is it dangerous to ingest alpha particles?

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Question 16 16. Which of the following is really just a high-energy electron?

Question 17 17. Which of the following is true about what Henri Becquerel discovered?

Question 18 18. If you put a sample of radioactive uranium in a dark room, would it emit any radiation? Why or why not?

Question 19 19. Why did Henri Becquerel win the Nobel Prize?

Question 20 20. In what country was Henri Becquerel born?

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Question 21 21. When polonium-218 decays, it emits a beta particle, followed by an alpha particle. The resulting isotope is:

Question 22 22. When neptunium-238 decays, it emits two alpha particles, a beta particle, and a gamma particle. The resulting isotope is:

Question 23 23. What is the product of a cobalt-60 atom that undergoes two beta decays?

Question 24 24. An element undergoes gamma decay to form lead-206. What was the identity of that initial element?

Question 25 25. What force holds the nucleus together?

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Question 26 26. What is mass defect?

Question 27 27. What is binding energy?

Question 28 28. Which of the following reactions describes when small atoms are combined together to form larger ones, releasing energy?

Question 29 29. In J. J. Thomson's 3rd experiment he decided that the particles making up the cathode rays must be smaller than an atom. This ended up being correct, but what was the other possibility?

Question 30 30. Why is it difficult to dispose of radioactive waste?

Modern Physics Overview 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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