Halflife and Absolute Dating

Determining actual age of an event or object in years is called

• absolute dating

• radioactive decay

• half-life

• radiometric dating

Tags

NGSS.HS-PS1-8

The breakdown of a radioactive isotope into the stable isotope of the same element or of another element is called

• absolute dating

• radioactive decay

• half-life

• radiometric dating

Tags

NGSS.HS-PS1-8

The time needed for half of a sample of a radioactive substance to undergo radioactive decay to form daughter isotopes is called

• absolute dating

• radioactive decay

• half-life

• radiometric dating

Tags

NGSS.HS-PS1-8

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

• absolute dating

• radioactive decay

• half-life

• radiometric dating

Atoms of the same element that have a different number of neutrons are called

• absolute dating

• radioactive decay

• half-life

• isotopes

Tags

NGSS.HS-PS1-8

How much of a radioactive parent isotope remains after one half-life has passed?

• all of the parent isotope because half-life refers to the time it takes for half of a radioactive substance to undergo radioactive decay

• half of the original amount because half-life refers to the time it takes for half of a radioactive substance to undergo radioactive decay

• one quarter of the original amount because half-life refers to the time it takes for half of a radioactive substance to undergo radioactive decay

Tags

NGSS.HS-PS1-8

If a parent isotope is at 16 and the daughter isotope is at 0, what will happen to the parent isotope after one half-life?

• the parent isotope stays 16

• the parent isotope becomes 8

• the parent isotope becomes 4

Tags

NGSS.HS-PS1-8

What is the best type of rock for radiometric dating?

• sedimentary rock

• igneous rock

• regular rock

• coarse rock

Methods of radiometric dating are

• radiocarbon dating

• potassium-argon dating

• uranium-lead dating

Tags

NGSS.HS-PS1-8

The ages of these can be found using radiocarbon dating.

• wood

• bones

• shells

• other organic remains