last 1000 years Flashcards
1
Q
what do tree rings provide us?
A
palaeoclimate data and chronological info which plays a role in carbon dating
2
Q
what do tree rings produce?
A
dendrochronologies crucial in accurate radiocarbon dating
3
Q
what element is radiocarbon?
A
14^C
4
Q
process of decay
A
parent nucleotide into daughter nuclide
5
Q
how to measure time of death from a sample
A
measure amount of radiocarbon remaining in organic sample
6
Q
what must be done to the 14^C elements to reveal calendar age?
A
must be calibrated
7
Q
what was there in the medieval warm period?
A
- wine in Scotland
- vikings to Greenland
- discovery of N America
8
Q
what is believed to have caused changes in atmospheric 14^C
A
nuclear bomb testing
