Understanding Carbon Dating

What is the primary use of carbon dating?

• To estimate the age of living organisms

• To determine the future growth of plants

• To measure the carbon content in the atmosphere

• To estimate the age of dead organisms

Which isotope of carbon is radioactive and used in carbon dating?

• Carbon-12

• Carbon-14

• Carbon-15

• Carbon-13

How does carbon-14 return to nitrogen in the atmosphere?

• Through alpha decay

• Through neutron capture

• Through gamma radiation

• Through beta decay

What is the main assumption made in carbon dating regarding living organisms?

• They absorb more carbon-14 than carbon-12

• They stop absorbing carbon after a certain age

• They have a constant ratio of carbon-12 to carbon-14

• They only absorb carbon-12

What happens to the carbon-14 in an organism after it dies?

• It remains constant

• It increases in amount

• It continues to decay

• It stops decaying

What is the decay constant used for in carbon dating?

• To calculate the time elapsed since the organism's death

• To measure the initial activity of a sample

• To estimate the future carbon levels

• To determine the type of carbon isotope

What is the approximate halflife of carbon-14?

• 1,000 years

• 5,700 years

• 10,000 years

• 50,000 years

Which factor can affect the constant ratio of carbon isotopes in the atmosphere?

• Plant photosynthesis

• Animal migration

• Fossil fuel burning

• Ocean currents

Why can't carbon dating be used for objects that are millions of years old?

• The ratio of carbon isotopes is too high

• The carbon-12 isotope decays too quickly

• The halflife of carbon-14 is too short

• The carbon-14 isotope is too stable

What is a potential external event that could disrupt the carbon isotope ratio?

• A lunar eclipse

• A snowstorm

• A rainstorm

• A solar flare