Ch. 8 Rock Record
Section 1: Determining Relative Age
Key Ideas
State the principle of uniformitarianism.
Explain how the law of superposition can be used to determine the relative ages of rocks.
Compare three types of unconformities.
Apply the law of crosscutting relationships to determine the relative ages of rocks.
Section 2: Determining Absolute Age
Key Ideas
Summarize the limitations of using the rates of erosion and deposition to determine the absolute age of rock formations.
Describe the formation of varves.
Explain how the process of radioactive decay can be used to determine the absolute ages of rocks.
Section 3: The Fossil Record
Key Ideas
Describe four ways in which entire organisms can be preserved as fossils.
List five examples of fossilized traces of organisms.
Describe how index fossils can be used to determine the age of rocks.
Ch. 9 Earth's Past
Section 1: Geologic Time
Key Ideas
Summarize how scientists worked together to develop the geologic column.
List the major divisions of geologic time.
Section 2: Precambrian Time and the Paleozoic Era
Key Ideas
Summarize how evolution is related to geologic change.
Identify two characteristics of Precambrian rock.
Identify one major geologic and two major biological developments during the Paleozoic Era.
Section 3: The Mesozoic and Cenozoic Eras
Key Ideas
List the periods of the Mesozoic and Cenozoic Eras.
Identify two major geologic and biological developments during the Mesozoic Era.
Identify two major geologic and biological developments during the Cenozoic Era.
The History of Earth - How Our Planet Formed - Full Documentary HD
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