# Problem: The approximate date of an earthquake that occured in a remote region before recorded history is determined by measuring the 14C activity in parts of a tree uprooted by the quake. The 14C activity is 11.2 disintegrations/min•gC in the tree. A living tree has a activity of 15.3 disintegrations/min•gC. How long ago did the eathquake occur? t 1/2 of 14C = 5730 yr. (a) 32,100 yr (b) 1790 yr (c) 599 yr (d) 1580 yr (e) 2580 yr

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The approximate date of an earthquake that occured in a remote region before recorded history is determined by measuring the 14C activity in parts of a tree uprooted by the quake. The 14C activity is 11.2 disintegrations/min•gC in the tree. A living tree has a activity of 15.3 disintegrations/min•gC. How long ago did the eathquake occur? t 1/2 of 14C = 5730 yr.

(a) 32,100 yr

(b) 1790 yr

(c) 599 yr

(d) 1580 yr

(e) 2580 yr

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the First Order Half Life concept. You can view video lessons to learn First Order Half Life. Or if you need more First Order Half Life practice, you can also practice First Order Half Life practice problems.

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