29/03/2020 Radioactivity(Senior Class Physics Study by Topics) 0Comments by Gate Academy Welcome to your Radioactivity(Senior Class Physics Study by Topics) NAME EMAIL PHONE NUMBER 1. The origin of cosmic rays is the Cosmos.Sun.Earth.Clouds.2. Which experiences the greatest electrical force in an electric field? Gamma rayAlpha particleElectronBeta particle3. From the results of this experiment, which element would probably be gone if we came back and tested again in 500 million years? Y onlyX onlyW, X, and Y onlyW only4. Electric forces within an atomic nucleus tend to Hold it together.Push it apart.Neither of these5. Which of the following materials are able to block some form of radiation? SkinAll of he aboveClothingLead foil6. Found in the nucleus Protons, electrons and neutronsProtons and neutronsElectrons and protonsElectrons and neutrons7. When a beta particle is ejected from a nucleus, the nucleus then has a greaterMass.Both of theseNeither of theseCharge.8. If an alpha particle and a beta particle have the same energy, which particle will penetrate farther into an object? They both penetrate the same distance.Beta particleAlpha particle9. The helium nucleus here would be called: An alpha particleThe daughter nucleusThe parent nucleus10. When a gamma ray is emitted by a nucleus, the nucleus then has less Both of theseEnergy.Neither of theseCharge.11. This particle has a mass that is about 1800 times smaller than the other two.ProtonNeutronElectron12. When a nucleus emits a beta particle, its atomic number Increases by 1.Decreases by 2Decreases by 1.Increases by 213. An element will decay to an element with higher atomic number in the periodic table if it emitsA beta particle.An alpha particle.A gamma ray.A proton.14. Radium-211 has a half-life of 13 seconds. If you started with 600 mg of Ra-211, how many seconds would it take until you only had 18.75 mg? 12117.0324.56515. Over 99% of the mass of an atom is located within the tiny nucleus. TrueFalse16. When radium (A = 88) emits an alpha particle, the resulting nucleus has atomic number 8890869217. What conclusion can be reached based on the data from location Z? The Geiger counter needs a new battery.The filter has a negative net count which means the air removed radiation from it.The filter has a net count of 29, and thus is radioactive.The filter has a net count of basically zero which means there was no radioactive material floating in the air.18. Which answer is closest to the half-life of the parent shown here?45 seconds1.5 years82 minutes5730 years19. A gram of radioactive material has a half-life of one year. After 4 years, how much radioactive material will be left?0 gNone of these1/4 g1/2 g20. When an element undergoes nuclear transmutation, the result is a completely different Isotope of the same element.Ion of the same element.Element21. Which body is heated in its interior by nuclear processes? BothThe sunNeitherThe Earth22. When thorium (A = 90) emits a beta particle, the resulting nucleus has atomic number8890None of these8923. In nuclear fusion, atoms of hydrogen are combined under intense heat and pressure to form ?HeliumNitrogenHydrogenCarbon24. The atomic mass number of an element is the same as the number of itsNone of theseNucleons.Neutrons.Protons.25. This picture most closely shows: Beta decayNeutron captureNuclear fissionAlpha decay26 out of 25Time is Up!