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Which would contribute most to your annual radiation exposure?

San Francisco, US

Which would contribute most to your annual radiation exposure?A. Living at an elevation 1,000 m above sea levelB. Having a dental X-rayC. Living within 50 miles of a nuclear reactorD. Taking a coast-coast trip on a commercial flightWhich is a common characteristic of both nuclear and conventional electric power plants?A. Smoke stacksB. Fuel rodsC. Water cooling systemsD. TurbinesWhich of the following is used to bathe the control rods and fuel bundles of the nuclear reactor?A. CadmiumB. Primary coolantC. WaterD. BoronThe core of the nuclear reactor consists of:A. fuel pellet.B. fuel rod.C. fuel assembly.D. All of the aboveDue to the nuclear accident of the Ukraine in the 1980’s, children in the nearby country of Belarus have suffered from:A. heart disease.B. juvenile diabetes.C. thyroid cancer.D. ear infections.Question 6 of 205.0 PointsWhich of the following radiation is without particles, mass, or electrical charge?A. BetaB. AlphaC. GammaD. X-rayWhich of the following radiation exposure is from human-related sources?A. SoilB. RockC. RadonD. Diagnostic X-raysStorage or disposal of Uranium-238 waste is more difficult than other types of waste due to its toxicity and its:A. extreme mass.B. quick decomposition into other isotopes.C. long half-life.D. value to smugglers.Question 9 of 205.0 PointsAll of the following are potential risks associated with nuclear-powered electricity, EXCEPT:A. black lung disease.B. reactor meltdown like Chernobyl.C. leakage of stored HLW into aquifers and soil.D. enriched uranium used as weapons by terrorist organizationsWhat is a device that converts electrical energy to chemical energy?A. Galvanic cellB. Electrolytic cellC. BatteryD. Electrochemical cellThe __________ produces electricity by “burning” hydrogen with oxygen without a flame and with relatively little heat and no light being produced.A. storage batteryB. fuel cellC. galvanic cellD. anodeWhat is the positive electrode of a battery where reduction takes place called?A. AnodeB. CathodeC. VoltageD. Electrochemical potentialThe rate of electron flow is:A. the size of the cell.B. the current.C. the voltage.D. electrical energyWhich of the following is mainly considered for use in electric vehicles?A. Hydrogen fuelB. Methanol fuelC. Proton exchange membraneD. Platinum based fuelAll of the following are drawbacks to hydrogen-powered vehicles, EXCEPT:A. cheap generation of hydrogen fuel.B. toxic emissions from hydrogen combustion.C. safe storage of highly reactive hydrogen gas.D. cheap and effective transport of hydrogen fuel.All of the following are drawbacks to hydrogen-powered vehicles, EXCEPT:A. cheap generation of hydrogen fuel.B. toxic emissions from hydrogen combustion.C. safe storage of highly reactive hydrogen gas.D. cheap and effective transport of hydrogen fuel.What kind of energy is primarily used to bring electricity to remote areas that are far from power lines?A. KeroseneB. BatteriesC. Solar electric unitsD. Electrical networkWhenever a substance is oxidized:A. it is called the oxidizing agent.B. some other substance must be reduced.C. it gains electrons.D. hydronium ions are produced.What condition must be met for a battery to be rechargeable?A. Either its anode or its cathode must generate a gas as a result of the electrochemical reaction.B. It must generate electricity via an acid-base reaction rather than via an oxidation reduction reaction.C. The battery must be open to the outside so that it can vent any internal pressure that builds up from gases within it.D. The electrochemical reaction of the battery must be reversibleVery small mercury batteries have been made and used in a multitude of applications. Why have they been replaced by other kinds of batteries for most applications?A. Mercury has become far too expensive to use in batteries.B. Mercury is poisonous and difficult to dispose of.C. These batteries cannot generate enough current for any modern devices.D. Though they may be made very small, they are far too heavy to use in most applications.

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