Half Life
Authored by Lisa Thompson
Science
9th Grade
NGSS covered
Used 1+ times
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15 questions
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1.
OPEN ENDED QUESTION
1 min • 1 pt
If I have a sample of Carbon-14 with 12.5% of its original amount of radioactive material, how many half-lives have elapsed?
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Tags
NGSS.HS-PS1-8
2.
OPEN ENDED QUESTION
1 min • 1 pt
The radioactive isotope Nickel-63 has a half-life of 100 years. How much would remain of a 10 gram sample after 400 years?
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Tags
NGSS.HS-PS1-8
3.
OPEN ENDED QUESTION
1 min • 1 pt
How long will it take a sample of Polonium-194 to decay to 1/8 of its original amount, if it has a half-life of 0.7 seconds?
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NGSS.HS-PS1-8
4.
OPEN ENDED QUESTION
1 min • 1 pt
Astatine-218 has a half-life of 1.6 seconds. Suppose you have a 1.2 gram sample of Astatine-218. How much would remain after 6.4 seconds?
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NGSS.HS-PS1-8
5.
OPEN ENDED QUESTION
1 min • 1 pt
Thorium-234 has a half-life of 24 days. How much would remain after 72 days if you started with 100 grams?
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NGSS.HS-PS1-8
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The time it takes for a radioactivity level to drop by a half is is the sample's ___________________.
quarter life
whole life
wonderful life
half life
Tags
NGSS.HS-PS1-8
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The time required for half of the nuclei of an isotope to decay.
Half-life
radioactive dating
critical mass
critical point
Tags
NGSS.HS-PS1-8
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