Fusion 8 Unit 3 Lesson 3

determining the absolute age of an event or object in years

• relative dating

• absolute dating

atoms of the same element that have a different number of neutrons and are unstable

• absolute dating

• radioactive decay

• half-life

• radioactive isotopes

Tags

NGSS.HS-PS1-8

the breakdown of a radioactive isotope into a stable isotope of the same or different element

• radioactive isotope

• radioactive decay

• radiometric dating

• half-life

Tags

NGSS.HS-PS1-8

the original radioactive isotope before decay happens

• parent

• daughter

Tags

NGSS.HS-PS1-8

the new isotope formed after decay occurs

• Parent

• Daughter

Tags

NGSS.HS-PS1-8

the time needed for half of a sample of a radioactive substance to undergo radioactive decay

• radioactive isotope

• radioactive dating

• half-life

• radioactive decay

Finding the absolute age of a sample by determining the relative percentages of a radioactive parent isotope and a stable daughter isotope

• radioactive decay

• radioactive isotope

• absolute age

• radiometric dating

Tags

NGSS.HS-PS1-8

Fossils that are used to estimate the age of rock layers they are found in

• trace fossils

• mold fossils

• index fossils

• contour fossils

Tags

NGSS.MS-ESS1-4