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Senior High School: 11th and 12th Grade
Physics
Radioactivity - Atoms And Radiation
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Q.1
What is background radiation due to?
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Nuclear fallout
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Rocks
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Cosmic rays
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All of the above
Q.2
What is an alpha particle?
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A particle which has one neutron and one proton
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A proton
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A neutron
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A particle which has two neutrons and two protons
Q.3
What is a beta particle?
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A low energy electron
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A high energy proton
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A high energy electron
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A low energy proton
Q.4
What is gamma radiation?
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A form of electromagnetic radiation
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An electron
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A proton
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A neutron
Q.5
Which type of radiation would be blocked by a thin sheet of paper?
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Alpha
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Beta
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Gamma
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None of the above
Q.6
Which type of radiation would be blocked by a thin sheet of aluminum - but not by paper?
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Alpha
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Beta
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Gamma
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They all get blocked
Q.7
Which type of radiation would be blocked by several inches of lead - but not by a thin sheet of aluminum or paper?
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Alpha
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Beta
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Gamma
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Beta and Gamma
Q.8
What types of radiation can be deflected by electric and magnetic fields?
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Alpha
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Alpha and Beta
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Alpha and Gamma
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Beta and Gamma
Q.9
What is the half-life of a radioactive isotope?
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The time it takes to be deadly to humans
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The number of isotopes in a sample
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The average time it takes for the number of nuclei of the isotope in a sample to halve
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The time it takes for the isotope in a sample to decrease by a quarter
Q.10
Which radiation is deflected more by electric and magnetic fields?
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Alpha
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Beta
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Gamma
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None are deflected
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