Absolute Age Dating

Geologists use radioactive dating to determine THE ABSOLUTE AGE OF ROCKS.

• True

• False

Tags

NGSS.HS-ESS1-5

Scientists use radioactive decay to measure...

• relative time

• absolute time

• half-lives

• time of day

Tags

NGSS.HS-PS1-8

The length of time required for half of the radioactive atoms in a sample to decay is its...

• era

• age

• half-life

• eon

Tags

NGSS.HS-PS1-8

How does absolute age differ from relative age?

• only absolute dating indicates which rock is older than another

• only absolute dating finds the age in years

• only relative dating finds the age in years

Tags

NGSS.MS-ESS1-4

Absolute Age

• the age of geologic features compared with things nearby

• sedimentary rocks are deposited in layers

• the actual age in years of an event or object

Tags

NGSS.HS-ESS1-6

Radiometric dating is possible because the rates of decay of radioactive isotopes _____.

• change over time

• change from place to place

• are constant

• vary widely

Tags

NGSS.HS-PS1-8

If the half-life of a radioactive group of atoms is 100 years, then how old is the rock if there have been two half-lives?

• 25 years

• 200 years

• 400 years

• 800 years

Tags

NGSS.HS-PS1-8

The original element that undergoes radioactive decay is known as the...

• daughter element

• half-life

• parent element

• carbon-14

Tags

NGSS.HS-PS1-8

The element that is the product of radioactive decay is known as the...

• daughter element

• half-life

• parent element

• carbon-14

Tags

NGSS.HS-PS1-8

If the half-life of a radioactive group of atoms is 300 years, then how old is the rock if there have been three half-lives?

• 37.5 years

• 100 years

• 600 years

• 900 years

Tags

NGSS.HS-PS1-8