Fossil Dating Worksheet
Explore the methods and principles of fossil dating, including relative and absolute dating techniques, for Grade 12 Biology students.
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Standards
Topics
Fossil Dating: Understanding Earth's Past
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Read each question carefully and answer to the best of your ability. This worksheet assesses your understanding of various fossil dating techniques and their applications.
1. Which dating method relies on the principle of superposition, where older layers of rock are found below younger layers?
Radiometric dating
Relative dating
Carbon-14 dating
Dendrochronology
2. What is the approximate half-life of Carbon-14?
5730 years
4.5 billion years
710 million years
1.3 billion years
3. The Law of states that in an undisturbed sequence of sedimentary rocks, the oldest layers are at the bottom and the youngest are at the top.
4. Absolute dating methods typically involve the use of isotopes.
5. Fossils used to define and identify geologic periods are known as fossils.
6. Radiometric dating can be used to date igneous rocks, but not sedimentary rocks directly.
True
False
7. The half-life of a radioactive isotope is affected by changes in temperature or pressure.
True
False
8. Explain the difference between relative dating and absolute dating methods.
9. Describe how the Law of Faunal Succession is used in relative dating.
10. Observe the image of geological layers below. If Layer A is the oldest and Layer D is the youngest, arrange the fossils found in layers B, C, and D from oldest to youngest, and explain your reasoning.
