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Natural and Man-Made Radiation Sources in Medicine

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Natural and Man-Made Radiation Sources in Medicine

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Questions and Answers

What is the primary natural source of cosmic radiation?

Gamma rays from uranium and thorium

Charged particles from the sun and stars (correct)

Radon gas inhaled with food and water

Radioactive decay products in soil

Which radioactive elements are important components of terrestrial radiation?

Actinium and radon

Uranium and thorium (correct)

Polonium and radium

Plutonium and cesium

What is the primary mode of transport for cosmic radiation to reach the earth?

Seeping through the earth's crust

Reflection by the ozone layer

Absorption by ocean waters

Interaction with the earth's atmosphere and magnetic field (correct)

Which component of natural background radiation is inhaled by living organisms?

Radon gas Signup and view all the answers

What factors cause variations in the amount of cosmic radiation in different parts of the world?

Differences in elevation and the effects of the earth's magnetic field Signup and view all the answers

Which of the following is a primary source of natural background radiation?

Radioactive material in soil and water Signup and view all the answers

What is a significant factor causing variations in the amount of cosmic radiation in different parts of the world?

Differences in elevation Signup and view all the answers

Which of the following is ingested by living organisms as part of natural background radiation?

Radon gas from uranium decay Signup and view all the answers

What is a significant component of terrestrial radiation found in nature?

Uranium and thorium Signup and view all the answers

What is a primary mode of transport for cosmic radiation to reach the earth?

Protons and alpha particles from outer space Signup and view all the answers