Absolute Dating

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.

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

• change over time

• change from place to place

• are constant

• vary widely

Tags

NGSS.HS-PS1-8

_______________ is the method of determining the absolute ages of rocks.

• Radiometric dating

• Relative dating

Some elements can decay over time.

• True

• False

Tags

NGSS.HS-PS1-8

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

• daughter element

• half-life

• parent element

• radioactive decay

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

The amount of time it takes for a parent isotope to decay to half its original amount

• daughter-half

• half-life

• life-element

• quarter-life

Tags

NGSS.HS-PS1-8

According to the law of superposition, where are the oldest fossils found?

• At the top of the rock layers

• Near the bottom of the rock layers

• In the middle of the rock layers

• Somewhat near the surface

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3