select all the correct answers.\nsully works as a geologist in the southwestern united states. he plans to…

select all the correct answers.\nsully works as a geologist in the southwestern united states. he plans to choose an unstable isotope to find the absolute age of a rock sample. which two aspects must he consider before making his choice?\n□ there should be a sufficient amount of the selected isotope in the rock.\n□ the isotope should be one that decays at a very fast rate.\n□ the isotope must not be found in any neighboring rocks.\n□ the half - life of the isotope must be long enough to capture the age of the rock.\n□ there should be more than one unstable isotope in the rock.\nreset next

select all the correct answers.\nsully works as a geologist in the southwestern united states. he plans to choose an unstable isotope to find the absolute age of a rock sample. which two aspects must he consider before making his choice?\n□ there should be a sufficient amount of the selected isotope in the rock.\n□ the isotope should be one that decays at a very fast rate.\n□ the isotope must not be found in any neighboring rocks.\n□ the half - life of the isotope must be long enough to capture the age of the rock.\n□ there should be more than one unstable isotope in the rock.\nreset next

Answer

Brief Explanations:

To find the absolute age of a rock sample using an unstable isotope, there needs to be enough of the isotope present for measurement. Also, the half - life of the isotope should be long enough to accurately capture the rock's age. A fast - decaying isotope may not be present in sufficient amounts for old rocks, and the presence or absence in neighboring rocks is not a key factor for the age - determination of the specific rock sample. Having more than one unstable isotope is not a necessary condition for age - determination with a single isotope.

Answer:

There should be a sufficient amount of the selected isotope in the rock. The half - life of the isotope must be long enough to capture the age of the rock.