Copyright

TExES Science 7-12: Radioactivity 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!

Page 1

Question 1 1. Why is nuclear power thought to be a 'climate friendly' form of energy?

Question 2 2. How does a nuclear reaction differ from a chemical reaction?

Question 3 3. Which type of reaction is involved with nuclear reactors?

Question 4 4. A 6.95 gram sample of radioactive nobelium-259 has a half-life of 58 min. How much is left after 2 hours and 54 minutes?

Question 5 5. If a substance has a half-life of 5 years, then how much of the initial sample remains after 15 years?

Page 2

Question 6 6. Becky was recently diagnosed with an aggressive brain tumor. Her oncologist recommended treating the tumor with cobalt-60 due to its precision with treating this type of cancer. This substance is being used for _____.

Question 7 7. The difference between the mass of the nucleus and the sum of each individual nucleon is:

Question 8 8. Which of the following is Yucca Mountain in Nevada known for?

Question 9 9. Two artifacts have recently been discovered. After testing, it is found that Artifact A has 20% of carbon-14 in it, while Artifact B has 35% of carbon-14 in it. Which of the two artifacts is the OLDEST?

Question 10 10. When does nuclear fusion occur?

Page 3

Question 11 11. Which particles are present in the nucleus of an atom?

Question 12 12. Which of the following terms describes an illness caused by exposure to a large dose of radiation over a short period of time?

Question 13 13. A sample of thulium-171 has a mass of 0.4055 grams. How much is left after 6 half-lives?

Question 14 14. The equation E = mc2 shows that mass and energy are:

Question 15 15. The equation E = mc2 shows that a small amount of mass creates _____.

Page 4

Question 16 16. Carbon-10 has a half-life of about 19 seconds. How many half-lives does it undergo in 2 minutes and 32 seconds?

Question 17 17. Which of these is not a real-life use of a radioactive substance?

Question 18 18. Cobalt-57 has a half-life of about 272 days. If a sample has an initial mass of 2.24 grams and undergoes decay until it has a mass of 0.140 grams, then how many half-lives passed?

Question 19 19. During a nuclear reaction, mass is lost. Which of the following does this result in?

Question 20 20. Which of these is not a type of dangerous radiation produced by radioactive substances?

Page 5

Question 21 21. The charges on beta particles (Β - ), alpha particles (α) and gamma (γ) rays are _____ respectively.

Question 22 22. Why is it difficult to dispose of radioactive waste?

Question 23 23. Rochelle has been experiencing fatigue, depression, and has had difficulty concentrating. Her physician believes she has an underperforming thyroid and wants to run some tests. Iodine-131 will be used to study the activity of Rochelle's thyroid. This substance is an example of _____.

Question 24 24. Which of these materials will block gamma rays?

Question 25 25. Which radioactive substance is used in smoke detectors?

Page 6

Question 26 26. Which of the following statements is NOT true regarding the process of nuclear fusion?

Question 27 27. A radioactive substance ______.

Question 28 28. The type of nuclear power that occurs when a heavier atom splits into smaller pieces, which is the most common on Earth is known as _____.

Question 29 29. What is the energy required to break a nucleus into its individual nucleons called?

Question 30 30. What is the term used to describe an accident that involves severe overheating of the nuclear reactor?

TExES Science 7-12: Radioactivity 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!

TExES Science 7-12 (236): Practice & Study Guide  /  Science Courses
Support