Half-Life (Level-Up Your Learning!)

Multiple Choice

After how many half-lives would you only have 12.5% of the original isotope left?

• 1

• 2

• 3

• 4

Multiple Choice

What percentage of the original isotope is left after 2 half-lives?

• 100%

• 75%

• 50%

• 25%

Multiple Choice

How many half-lives have passed if 12.5% ¹⁴C remains?

• 1 Half-life

• 2 Half-lives

• 3 Half-lives

• 4 Half-lives

Multiple Choice

How many grams of Carbon-14 will remain after 17,100 years?

• 32 g

• 16 g

• 8 g

• 4 g