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Alpha decay: Quiz

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Question 1: Most of the helium produced on ________ (approximately 99% of it) is the result of the alpha decay of underground deposits of minerals containing uranium or thorium.
SunNatureMoonEarth

Question 2: Alpha decay can provide a safe power source for ________ used for space probes and artificial heart pacemakers.
Nuclear fuelUraniumRadioisotope thermoelectric generatorPlutonium

Question 3: By some estimates, this might account for most of the internal radiation damage, as the recoil nuclei are typically heavy metals which preferentially collect on the ________.
KaryotypeChromosomal translocationAutosomeChromosome

Question 4: By 1928, ________ had solved the theory of the alpha decay via tunneling.
Francis CrickBig BangGeorge GamowHans Bethe

Question 5: In general, external alpha radiation is not harmful since alpha particles are effectively shielded by a few centimeters of air, a piece of paper, or the thin layer of dead ________.
LeatherHuman skinSkinTanning

Question 6: The largest natural contributor to public radiation dose is ________, a naturally occurring, radioactive gas found in soil and rock.
RadonHeliumXenonUranium

Question 7: Russian dissident ________'s 2006 murder by radiation poisoning is thought to have been carried out with polonium-210, an alpha emitter.
Federal Security Service (Russia)Vladimir PutinBeslan school hostage crisisAlexander Litvinenko

Question 8: Alpha decay, like other cluster decays, is fundamentally a ________ process.
Schrödinger equationQuantum mechanicsQuantum tunnellingIntroduction to quantum mechanics

Question 9: An ________ is the same as a helium-4 nucleus, and both mass number and atomic number are the same.
Alpha particleIonizing radiationElectronAlpha decay

Question 10: Classically, it is forbidden to escape, but according to the then newly discovered principles of ________, it has a tiny (but non-zero) probability of "tunneling" through the barrier and appearing on the other side to escape the nucleus.
Introduction to quantum mechanicsQuantum mechanicsWave–particle dualitySchrödinger equation







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