Radioactive Decay Earth Science

What is the definition of PARENT ISOTOPE?

• Isotope that is unstable and decays; also called a radioactive isotope.

• Stable isotope that forms after the parent isotope decays.

• The time required for half of a sample of a radioactive isotope to break down by radioactive decay to form a daughter isotope.

• Any method of determining whether an event or object is older or younger than other events or objects.

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NGSS.HS-PS1-8

What is the definition of ABSOLUTE DATING?

• An ordered arrangement of rock layers that is based on the relative ages of the rocks (older rocks are at the bottom).

• Any method of measuring the age of an event or object in years.

• Any method of determining whether an event or object is older or younger than other events or objects.

• A method of determining the absolute age of an object by comparing the amount of parent isotope vs. daughter isotope and using half-life.

Tags

NGSS.HS-PS1-8

What is the definition of RADIOMETRIC DATING?

• An ordered arrangement of rock layers that is based on the relative ages of the rocks (older rocks are at the bottom).

• Any method of measuring the age of an event or object in years.

• Any method of determining whether an event or object is older or younger than other events or objects.

• A method of determining the absolute age of an object by comparing the amount of parent isotope vs. daughter isotope and using half-life.

Tags

NGSS.HS-PS1-8

Occurs when atoms of an unstable element break down to form atoms of another element

• Erosion

• Index Fossils

• Radioactive Decay

• Law of Superposition

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NGSS.HS-PS1-8

Radioactive decay happens when a(n)​ (a)   atom will change it's nucleus to become a​(n)​ (b)   atom.

• unstable

• stable

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NGSS.HS-PS1-8

What is the definition of RADIOACTIVE ISOTOPE?

• Stable isotope that forms after the parent isotope decays.

• The time required for half of a sample of a radioactive isotope to break down by radioactive decay to form a daughter isotope.

• The process in which a radioactive isotope tends to break down into a stable isotope of the same element or another element.

• Isotope that is unstable and decays; also called a parent isotope.

Tags

NGSS.HS-PS1-8

What is the definition of RADIOACTIVE DECAY?

• The scientific study of the origin, history, and structure of Earth and the processes that shape Earth.

• The time required for half of a sample of a radioactive isotope to break down by radioactive decay to form a daughter isotope.

• The process in which a radioactive isotope tends to break down into a stable isotope of the same element or another element.

• Isotope that is unstable and decays; also called a parent isotope.

Tags

NGSS.HS-PS1-8

What is the definition of DAUGHTER ISOTOPE?

• Isotope that is unstable and decays; also called a radioactive isotope.

• Stable isotope that forms after the parent isotope decays.

• The time required for half of a sample of a radioactive isotope to break down by radioactive decay to form a daughter isotope.

• Any method of determining whether an event or object is older or younger than other events or objects.

Tags

NGSS.HS-PS1-8

Base your answers to questions on the graph below and on your knowledge of Earth science. The graph shows the decreasing percentage of a radioactive isotope, carbon-14 (¹⁴C), as it decays and the increasing percentage of the disintegration product that forms. Carbon-14 can be used to determine the ages of both a mastodon bone and a human bone, and a lava flow and a granite intrusion. Which of the following pairs can carbon-14 be used to determine the ages of?

• quartz crystal and a calcite crystal

• lava flow and a granite intrusion

• mastodon bone and a human bone

• trilobite fossil and a dinosaur fossil

Base your answers to questions on the graph below and on your knowledge of Earth science. The graph shows the decreasing percentage of a radioactive isotope, carbon-14 (¹⁴C), as it decays and the increasing percentage of the disintegration product that forms. What is the disintegration product of this radioactive isotope?

• ⁴⁰Ar

• ²⁰⁶Pb

• ¹⁴N

• ⁸⁷Sr

Tags

NGSS.HS-PS1-8