When an organism dies, the intake of carbon atoms stops, and as the radioactive isotope carbon-14 decays over time into the more stable atom ______, the amount of the remaining ______ can be used to estimate the age of a fossil.Multiple choice question.carbon-12; carbon-14carbon-12; carbon-12

Age of fossil may be found out by determining the ratio of two isotopes of carbon. The isotopes are1 point(a) C-12 and C-13(b) C-13 and C-14(c) C-12 and C-14(d) C-12 and carbon black

Carbon-14 is a radioactive nucleus with a half-life of 5760 years. In livingmatter the amount of carbon-14 decays at a rate of 15.3 decay events perminute per gram of carbon. A fossil is analysed and found to have a carbon-14 decay rate of 7.70 decay events per minute per gram of carbon. How oldis the fossil?

Carbon-14 dating, a type of radiometric dating, uses ______ as a type of clock to measure the age of fossils.Multiple choice question.isotopesprotonselectronshydrogen atoms

What elements’ isotopes are used to estimate how old something is? Why do scientists use morethan one type? (Be specific, it is not just to get repeated results)3. Pretend you are a scientist and have a tool like the one on Dating Game tab:a. How do you decide which to use: Carbon-14 or Uranium-238?b. How does the percentage help you estimate the age?c. If you can’t get a reading on one object like the fish fossil , what else canyou try? Determine the approximate age of the fish fossil and explain what you did toestimate the fossil age.4. If you were a forensic scientist and found a dead buried body, could you use one of the isotopesin the simulation to figure out how long ago the person died? Explain.5. What type of reaction do Carbon -14 and Uranium- 238 undergo? Explain how you figured thisout and write the reaction for each.

In the process of radiometric dating, if the percent of the original amount of carbon-14 present in a fossil is 12.5%, how old is the fossil? The half-life of carbon-14 is 5,730 years.Multiple choice question.11,460 years old17,190 years old5,700 years old22,920 years old