Half Lives

Quiz
•
Science
•
9th Grade
•
Hard
Standards-aligned
Lisa Thompson
FREE Resource
25 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Geologist use the time it takes for a radioactive isotope to decay to half its original mass called a___________.
radioactive decay
isotope
half-life
carbon dating
Tags
NGSS.HS-PS1-8
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The half life of a sample is 5 days. How many half lives have passed in a period of 15 days?
1
2
3
4
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the half life of this sample?
2 mins
3 mins
4 mins
4 hours
Tags
NGSS.HS-PS1-8
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
How old is this fossil after undergoing 4 half-lives?
Tags
NGSS.MS-ESS1-4
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The amount of time it takes for half of the particles of an element to decay is called:
Absolute Age
Half-Life
Radioactivity
Tags
NGSS.HS-PS1-8
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Suppose you extract one gram of carbon from an ancient wooden hammer handle. You find that your ancient gram of carbon is half as radioactive as a gram of carbon extracted from a tree branch that was cut today. The half-life of C-14 is 5,730 years. Assuming that today’s ratio of C-14 to C-12 is the same as when the hammer was made, how old would you estimate is the hammer?
1,432.5 years old
2,865 years old
5,730 years old
11,460 years old
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A 50.0 g sample of N - 16 decays to 12.5 g in 14.4 seconds. What is it's half - life?
14.4 sec
7.2 sec
3.6 sec
1.8 sec
Tags
NGSS.HS-PS1-8
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