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- 1. Multiple ChoiceThe rate at which a radioactive element decays is its ____.quarter lifewhole lifewonderful lifehalf life
- 2. Multiple ChoiceEnergy in the sun is produced as a result of nuclear ____ reactions.fusionfissionwastesub
- 3. Multiple ChoiceThe three types of nuclear radiation in order of increasing penetrating power arealpha, beta, gammaalpha, gamma, betabeta, alpha, gammagamma, alpha, beta
- 4. Multiple Choice
The process by which nuclei having small masses are combined to form a single larger nucleus is called nuclear ____.
fusion
fission
reactivity
waste
- 5. Multiple ChoiceName the type of radioactive particle that can be stopped by a sheet of paper.alphabetagammalambda
- 6. Multiple ChoiceName the most penetrating type of radiation.alphabetagammalambda
- 7. Multiple ChoiceWhat makes something radioactive?elements with an atomic number above 81an unstable nucleuscontaminated sewageIt decays over time
- 8. Multiple ChoiceIf the half life of a radioactive element is 100yrs, how long would it take for the radioactivity to reduce by one half?200yrs100yrs50yrs300yrs
- 9. Multiple ChoiceWhat is nuclear fission?Big nucleus splits to small nucleiSmall nuclei fuse into a bigger nucleusStarsMaking compounds
- 10. Multiple ChoiceBarium-122 has a half-life of 2 minutes. A fresh sample weighing 80 g was obtained. If it takes 10 minutes to set up an experiment using barium-122, how much barium-122 will be left when the experiment begins?0.25g2.5g25g80g
- 11. Multiple ChoiceThe half-life of strontium-90 is 25 years. How much strontium-90 will remain after 100 years if the initial amount is 4.0 g?3.0g0.25mg0.3g0.25g
- 12. Multiple ChoiceAfter the third half-life, how much of the sample is left?1/21/31/161/8
- 13. Multiple Choice_______________ is the process by which unstable atoms emit radiation until they become stable.RadiationChemical ReactionRadioactive DecayIsotopes
- 14. Multiple ChoiceA benefit to using nuclear fission power is that it:supplies a lot of electricityconserves organic fuels, like oil, coal, and woodeliminates huge quantities of sulfur dioxides, which pollute our airall of the choices
- 15. Multiple Choice
what's the half life of this substance?1 day2 days3 days4 days - 16. Multiple ChoiceAn isotope of an element has the same number of _________, but a different number of _________.Protons, electronsProtons, neutronsElectrons, neutrons
- 17. Multiple ChoiceWhat type of radioactive decay is shown here?Alpha decayBeta decayGamma decay
- 18. Multiple ChoiceWhich type of radiation releases an electron?Alpha radiationBeta radiationgamma radiation
- 19. Multiple ChoiceWhat particle is released when an unstable isotope undergoes alpha radiation?an helium nucleusan electrona photon of light
- 20. Multiple ChoiceWhich is NOT a characteristic of gamma radiation?High energized photon of lightCan be stopped by a sheet of aluminum foilIs the most harmful type of radiation to humansOur use of protection is concrete, or several inches of lead
- 21. Multiple ChoiceWhat type of decay is shown herealpha decaybeta decaygamma decay
- 22. Multiple Choice
What percent of an isotope will remain after 2 half lives?
50%
35%
12.5%
25%
- 23. Multiple Choice
What fraction of an isotope has decayed after 4 half lives?
3/4
7/8
15/16
1/2
- 24. Multiple Choice
Which particle below will be attracted to negatively charged matter?
alpha particle
beta particle
gamma ray
- 25. Multiple Choice
Which particle below will be attracted to positively charged matter?
alpha particle
beta particle
gamma ray
- 26. Multiple ChoiceHow many neutrons does the isotope of lithium have?8345
- 27. Multiple ChoiceHow many protons does this isotope of titanium have?48222670
- 28. Multiple ChoiceWhat is an isotope?A charged atomAn atom with different amounts of neutronsAn atom with different amounts of protonsA neutral atom
- Answer choicesTagsAnswer choicesTags