Carbon-14 is one isotope of carbon, and its radioactive decay has a half-life of 6000 years.
(a)[2]
Describe what occurs during radioactive decay.
(b)[2]
On Fig. 10.1, sketch a graph showing how the count rate changes over the next 24 000 years.
(c)[2]
Name the apparatus used to measure the radiation from the sample of wood and explain how it is used to measure the count rate.
(d)[2]
Describe how the count rate from a sample of wood is used to determine its age.
Worked solution & mark scheme
This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The nucleus is the source of the emission.” …
- Full mark scheme, point by point
- Step-by-step worked solution
- Write your answer & get it marked instantly by AI