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Flashcards in Half-life Deck (7):
1

What is the unit for measuring radioactivity?, what does it mean?

Becquerel (Bq)
1 Bq means one nucleus decaying per second

2

The radioactivity of a sample always [ ] over time

decreases

3

The [ ] a sample becomes, the less radiation it will emit

older

4

What is a half-life?

A HALF-LIFE is the AVERAGE time it takes for the NUMBER of NUCLEI in a radioactive isotope sample to HALVE

5

A short half life means the activity falls [ ]

quickly

6

A half life is always the same period of time for a sample!

Did you know that?!!

7

The half-life is found from the graph by finding the [ ] interval on the x axis corresponding to [ ] the activity on the y axis

time
halving