
Radioactive Decay and Half-Life Concepts

Interactive Video
•
Physics, Chemistry, Science
•
9th - 12th Grade
•
Hard

Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary method used to determine the absolute age of a rock?
Radioactive decay
Stratigraphy
Fossil analysis
Carbon dating
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a half-life in the context of radioactive decay?
The time it takes for isotopes to disappear
The time it takes for all parent isotopes to decay
The time it takes for half of the parent isotopes to decay into daughter isotopes
The time it takes for daughter isotopes to become stable
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the example problem, how many total atoms are there initially?
1000
750
500
1250
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
After one half-life, how many parent isotopes remain in the example?
1000
500
750
250
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many half-lives have passed when there are 250 parent isotopes left?
Four
One
Two
Three
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the known half-life of the hypothetical parent-daughter isotope series in the example?
One million years
Two million years
Three million years
Four million years
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How old is the rock sample if two half-lives have passed and the half-life is two million years?
Five million years
Four million years
Three million years
Two million years
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