Gebhardt---relative/Absolute Age And Half-life Notes Quiz
5 Questions
| Total Attempts: 152
Questions and Answers
- 1.Rocks that can be dated using absolute dating are mostly ____.
- A.
Metamorphic rocks
- B.
Metamorphic and igneous rocks
- C.
Sedimentary and metamorphic rocks
- D.
Igneous and sedimentary rocks
- 2.Which element is used for dating matter that was once living but is less than 75,000 years old?
- A.
Uranium-238
- B.
Potassium-40
- C.
Carbon-14
- D.
Argon-40
- 3.Radiometric dating has been used to date the oldest rocks on Earth and scientists now estimate the Earth to be ____.
- A.
3.96 billion years old
- B.
4.6 billion years old
- C.
A few thousand years old
- D.
2.0 million years old
- 4.When I look at the relationship of parent and daughter material, what percentage of daughter material will be present if there is 25% of the parent material?
- A.
55%
- B.
25%
- C.
100%
- D.
75%
- 5.How long will it take for 30 grams of radon to decay to 7.5 grams if radon has a half-life of 3.82 days?
- A.
0 days
- B.
3.82 days
- C.
7.64 days
- D.
11.46 days
Questions: 5 | Attempts: 159 | Last updated: Sep 14, 2014
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Sample QuestionUsing the diagram on the board, what does letter A represent?
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