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- 1. Multiple Choice
The study of tree rings.
dendrochronology
ice core
varves
half-life
- 2. Multiple Choice
What can scientists study from ice cores?
volcanic ash
solar radiation levels
ocean temperatures
solar flares
- 3. Multiple Choice
An organism has 40 grams of Carbon-14. How much Carbon-14 will it have after 1 half-life?
20
10
40
5
- 4. Multiple Choice
An organism has 100 grams of Carbon-14. How much Carbon-14 will it have after 3 half-lives?
12.5
25
50
5
- 5. Multiple Choice
How could radiometric dating be used to determine the age of a fossilized bone?
analyzing the bone's DNA sequence
measuring the ratio of isotopes in the bone
examining the bone's mineral composition
comparing the bone's shape to known fossils
- 6. Multiple Choice
What is half-life?
The time it takes for a substance to reach its maximum stability.
The time it takes for a substance to decay completely.
The time it takes for a substance to become radioactive.
The time it takes for half of a radioactive isotope to decay.
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