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Worksheet 3 New discoveries |
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| Target date | 2/16/01 | ||||
| Questions | 1. What do Americans call the rays Röntgen discovered?
2. Are they visible? How can you detect them? 3. What is the link between Röntgen's discovery and Becquerel's? 4. Name a radioactive element. 5. How many kinds of radioactive radiations are there? What are they called? 6. What conservation law was radioactivity initially thought to call into doubt? 7. How does transmutation account for radioactivity? 8. Define half life. 9. For what did J.J. Thomson win the Nobel Prize? 10. What do we now say cathode rays are composed of? |
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| Copyright © Cathryn Carson 2001 |