Question

part 1
do the scenarios below describe a persons absolute or relative age? circle your answer

1. katiana is older than deyonna.

absolute age
relative age

1. katiana is 14 years old.

absolute age
relative age

1. mariana was born after daniel but before sylvia.

absolute age
relative age

1. my grandmother is the oldest member of my family.

absolute age
relative age

1. my grandmother is 99.5 years old.

absolute age
relative age
part 2
answer the following questions in a few sentences.

1. what is radiometric dating? how do scientists use it?

Explanation:

1. "Katiana is older than Deyonna" compares Katiana's age to Deyonna's, so it's relative age.
2. "Katiana is 14 years old" gives a specific numerical age, so it's absolute age.
3. "Mariana was born after Daniel but before Sylvia" shows the order of births, so it's relative age.
4. "My grandmother is the oldest member of my family" is a comparison within the family, so it's relative age.
5. "My grandmother is 99.5 years old" gives a specific age value, so it's absolute age.

For radiometric dating, it's a method in geology and archaeology. Scientists use the decay rate of radioactive isotopes in a sample to determine its age. They measure the amounts of parent - and daughter - isotopes in a sample and use the known half - life of the parent isotope to calculate the age of the sample.

Answer:

1. relative age
2. absolute age
3. relative age
4. relative age
5. absolute age

Radiometric dating is a method to determine the age of a sample using the decay rate of radioactive isotopes. Scientists measure parent and daughter isotopes in a sample and use the known half - life of the parent isotope to calculate the sample's age.