Radioactive Decay Quiz

What is the half-life of the radioactive atom in the given text?

• 15 seconds

• 5 seconds

• 1 second

• 10 seconds

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NGSS.HS-PS1-8

How long did it take for the bucket of dice to reach one half-life?

• 5 minutes

• 1 minute

• 15 minutes

• 10 minutes

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NGSS.HS-PS1-8

What is the half-life of the isotope iodine-131?

• 4 days

• 12 days

• 16 days

• 8 days

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NGSS.HS-PS1-8

What is the half-life of the radioactive isotope carbon-14?

• 1000 years

• 5730 years

• 5000 years

• 10000 years

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NGSS.HS-PS1-8

How many half-lives have passed since the wood in the given text died?

• 4

• 1

• 2

• 3

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NGSS.HS-PS1-8

After how many half-lives does radio carbon dating become unreliable?

• 20

• 15

• 10

• 5

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NGSS.HS-PS1-8

What is the half-life of strontium-90?

• 29 years

• 50 years

• 100 years

• 10 years

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NGSS.HS-PS1-8

How long will it take for strontium-90 to begin to vanish from the earth?

• 60 years

• 30 years

• 120 years

• 90 years

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NGSS.HS-PS1-8

What is the half-life of the isotope uranium-238?

• 4.5 billion years

• 1.5 billion years

• 2.5 billion years

• 3.5 billion years

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NGSS.HS-PS1-8

After how many half-lives does the amount of original radioactive isotope reduce to 1/8th?

• 2

• 3

• 4

• 5

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NGSS.HS-PS1-8