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Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.<br />
Name Date Class<br />
3<br />
<strong>Study</strong> Guide<br />
Detecting Radioactivity<br />
Chapter<br />
18<br />
Directions: Determine whether the italicized term makes each statement true or false. If the statement is true,<br />
write true in the blank. If the statement is false, write in the blank the term that makes the statement true.<br />
1. Radiation forms ions by removing protons from matter as it<br />
passes through.<br />
2. In a cloud chamber, alpha particles leave long, thin trails.<br />
3. In a bubble chamber, a moving radioactive particle leaves ions<br />
behind, causing the liquid to boil along the trail.<br />
4. The common method of measuring radioactivity at job sites is<br />
to use an electroscope.<br />
5. In a cloud chamber, beta particles leave short, thick trails.<br />
6. Small and portable Geiger counters are often used to test for<br />
radioactivity.<br />
7. A radioactive particle moving through the air near an electroscope<br />
will cause the leaves of the electroscope to move together.<br />
Directions: Match each type of radiation detector in Column II with its description in Column I. Write the letter<br />
of the correct term in the space provided.<br />
Column I<br />
Column II<br />
8. ionizing rays pass through a superheated liquid<br />
9. ionizing rays pass through water vapor or ethanol<br />
10. loses charge in the presence of radiation<br />
11. radiation causes a current to flow from a wire to produce<br />
clicking sound or flashing light<br />
a. Geiger counter<br />
b. electroscope<br />
c. bubble chamber<br />
d. cloud chamber<br />
Detecting Radioactivity 67
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