REVIEW - 2.2 Absolute-Age Dating

What is the difference between Relative-Age and Absolute-Age Dating?

• Relative-Age Dating gives an exact numerical age of an object.

• Absolute-Age Dating is an approximation of the age of rock layers.

• Absolute-Age Dating gives an exact numerical age of an object.

• Relative-Age Dating is used to date living things.

How do scientists determine the absolute age of a rock?

• They check its ID.

• They estimate its age using the Principle of Superposition.

• They use Radiometric Dating and the ratio between parent and daughter nuclei.

• There is no way to know the age of a rock.

What is one advantage of using Absolute-Age Dating?

• It is unaffected by location, climate, or temperature.

• It is only affected by location.

• It is only affected by climate.

• It is only affected by temperature.

What objects is Radiocarbon Dating used for?

• Objects that were once living

• Metamorphic Rocks

• Volcanic Ash

• Sedimentary Rocks

Which of the objects below would be dated using Radiocarbon Dating?

• Volcanic ash

• A giant boulder

• A dinosaur bone

• A sedimentary rock

What happens to the amount of parent isotope as it undergoes radioactive decay?

• The amount of parent isotope increases

• The amount of daughter isotope decreases

• The amount of parent isotope decreases

• The amount of parent isotope doesn't change

How much of the parent and daughter isotope remain after one half-life?

• 25% parent, 75% daughter

• 25% daughter, 75% parent

• 50% daughter, 50% parent

• 12.5% parent, 87.5% daughter

How much of the parent and daughter isotope remain after two half-lives?

• 25% parent, 75% daughter

• 25% daughter, 75% parent

• 50% daughter, 50% parent

• 12.5% parent, 87.5% daughter

What is Radiocarbon Dating?

• A type of dating that determines the absolute age of rocks

• A type of dating that determines the absolute age of once living things

What is Radiometric Dating?

• A type of dating that determines the absolute age of rocks

• A type of dating that determines the absolute age of once living things