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WorksheetsDiscovering the Age and History of Earth
Total questions: 11
Worksheet time: 9mins
Which is the most accurate method used in determining the true age of a fossil?
relative dating
fossil record
radioactive dating
law of superposition
Which best describes the relationship between rock layers and index fossils?
Different rock layers contain only specific species.
Different rock layers are compared to find the exact age.
All layers w/ the same fossils are the same age.
Layers have same relative age if they have same index fossils
Which best describes a fossil that helps determine the relative age of a rock layer?
trace fossil
Mold fossil
index fossil
intrusive fossil
Which type of radioactive dating would be most useful in determining the age of fossil 40,000 years old or younger?
C-14 method
U-238 method
K-Ar method
None
Which layer is considered the youngest?
A
C
E
D
Which method can best be used by the students to determine the relative age of these layers?
Law of superposition
Uniformitarianism
Carbon-14 dating
Radioactive dating
Which is the best predictor of the relative age of a layer of rock?
thickness of layer
length of layer
position of layer
size of layer
Index fossil are found in layers of rock in Africa & South America. What are the fossil ages?
The African rock is older.
The South American rock is older.
The rocks are younger than the fossils.
The rocks are approximately the same age.
Which inference can be made about the relative age of a fossil found in a sedimentary rock bed?
The fossil formed around the time of rocks in the same layer
The fossil & the rock were formed in different environments
The fossil was formed before the rock layer that contains it
The fossil is younger than the rock layer above it
Why are index fossils used as guides to determine the age of rocks?
Each index fossil lived in a specific geologic time period
All index fossils lived at all the periods of geologic time
Index fossils are rare and are not commonly found in rocks.
If a metamorphic rock contains an intrusion of igneous rock, which rock is the oldest?
The igneous rock is older
The rocks are the same age.
The metamorphic rock is older
