WorksheetsHalf-Lives
Total questions: 10
Worksheet time: 13mins
Add the labels to the graph.
One label will not be used.
3rd half-life
2nd half-life
x-axis
y-axis
first half-life
original amount
What percent of Iodine-131 remains after 2 half-lives?
In days, how long is the half-life of Iodine-131?
After four half-lives, how many days have passed?
The y-axis of the graph measures "counts per second." What does this refer to?
How many atoms a person can count in a second
How much radiation is detected by a Geiger-Muller counter per second
How many atoms there are in a second
How many atoms there are in the sample
What was the starting "counts per second" of the sample?
After the first half-life, how many counts per second are measured?
How long is the half-life in hours?
After 3 half-lives, how many counts per second would the Geiger-Muller Counter measure?
68,000 counts per second
35,000 counts per second
9,000 counts per second
40,000 counts per second
Evaluate this graph.
What could this person add to their graph to improve other scientists' understanding of their data?
