Radioactivity- Half Life Flashcards
1
Q
Half-life is the amount of time it takes for the number of ______ of the _______ to halve.
A
Half-life is the amount of time it takes for the number of nuclei of the isotope to halve.
2
Q
The number of _____ and count rate both ____ every half-life.
A
The number of atoms and count rate both half every half-life.
3
Q
It can be read on a ____-____ graph.
A
It can be read on a half-life graph.
4
Q
The half-life of ______ __ is used to age living things (carbon dating).
A
The half-life of carbon 14 is used to age living things (carbon dating).
5
Q
what can half life also be described as
A
the time it takes for the count rate from a sample containing the isotope to fall to half its initial level
