Science 30 January 1999 Grade 12 Diploma Examination

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31. Which of the following graphs represents the relationship between the distancefrom transmission lines and the degree of exposure to electromagnetic radiation?A.B.Degree of exposureDegree of exposureDistance from sourceDistance from sourceC.D.Degree of exposureDegree of exposureDistance from sourceDistance from source20
Use the following information to answer the next question.Diagrams of Processes Used in the Production of Electricity<strong>12</strong>3Boiling waterSteam4C +CNumerical Response09. Match each diagram, as numbered above, with the name of its corresponding process.Chemical reaction _____ (Record in the first column.)Nuclear fission _____ (Record in the second column.)Nuclear fusion _____ (Record in the third column.)Physical change _____ (Record in the fourth column.)(Record your answer in the numerical-response section on the answer sheet.)21
Page 1 and 2: cience 30 Science 30 Science 30 Sci
Page 3 and 4: Multiple Choice• Decide which of
Page 5 and 6: The principles of biology, chemistr
Page 7 and 8: 6. The blood in the veins of the le
Page 9 and 10: Use the following additional inform
Page 11 and 12: 12. The zygote is cultured and is i
Page 13: 15. Sparks from static electricity
Page 16 and 17: Use the following information to an
Page 18 and 19: 24. The use of pesticides may pose
Page 30 and 31: A series of experiments were conduc
Page 34 and 35: Long Answer - 15%1. Many scientists
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Page 42 and 43: Scoring Guide - Short Answer Januar
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Science 30 January 1999 Grade 12 Diploma Examination

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