Radiocarbon

The rate at which nuclear decay takes place is measured by

• neurons

• a radioisotope’s half-life.

• decay rates

• temperature

Tags

NGSS.HS-PS1-8

The half-life of a radioisotope is

• the time it takes to double in size

• the time it takes to die

• the time it takes for half the nuclei to decay

• the time it takes to have dance party

Tags

NGSS.HS-PS1-8

Who would use half-life of radioisotopes

• historians

• archaeologists

• builders

• engineers

Tags

NGSS.HS-PS1-8

Why do we use half life of the radioisotope carbon-14?

• to determine the age of fossils and ancient materials

• to record sea floor spreading

• to breakdown the process of decay

• to measure the radioactivity of objects

Carbon dating relies on

• the fact that all living things contain a small amount of carbon-14

• organisms dying

• washing your hands

• organism remaining constant

Explain what the graph means

Therefore, by measuring the amount of carbon-14 in fossils and bones, scientists can

What contains carbon-14

• Cars

• Humans

• Trees and other plants

• Paper

Tags

NGSS.MS-LS2-3

How many half lives does it take for less than 10% of carbon-14 to remain?

This graph demonstrates exponential decay. Describe this pattern in words.