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Warm Up December 3, 2012

Warm Up December 3, 2012. DIRECTIONS: For each of the following, decide whether you think the statement is true or false. Then explain why. Radiation can both cause and treat cancer. Radioactivity did not exist before humans discovered it and started building nuclear weapons.

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Warm Up December 3, 2012

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  1. Warm Up December 3, 2012 DIRECTIONS: For each of the following, decide whether you think the statement is true or false. Then explain why. • Radiation can both cause and treat cancer. • Radioactivity did not exist before humans discovered it and started building nuclear weapons. • Once a material is radioactive, it will be radioactive forever. • Radiation has more to do with the electrons of an atom than with the nucleus. • Humans have a clear plan for how to safely dispose of radioactive waste.

  2. Answers • True. Radiation can tamper with the DNA in cells, making them abnormal. But, since radiation kills cells, it can also be used to target damaged cancerous cells. • False. Radioactivity has been around since the Big Bang. • False. The thing about radioactive decay is that eventually the radioactive substance breaks down into other non-radioactive substances. However, this process can take thousands of years. • False. Radioactivity ONLY has to do with the nucleus. An unstable nucleus means a radioactive atom. • False. We have some possibilities but no definite, safe way to dispose of nuclear waste (as you will see in the video).

  3. Agenda • Warm Up • Periodic Table Quiz • Radioactivity Investigation Lab • “Eyes of Nye: Nuclear Waste” Video • Cool Down • HW: • Read 4.5 • p. 163 #1a-c, #2a-c, #3a-b • 4.5 Vocabulary Foldable (6 words on p. 158) This is the international symbol for radioactivity.

  4. Cool Down • Title: Radioactivity Circle Map In the square, write the things that affect your understanding of radioactivity In the large circle, write what you know about radioactivity Radioactivity

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