Question
why are absolute dating and relative dating different?
a. one uses other rock layers the other uses radioactivity
a. one uses other rock layers the other uses radioactivity
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Answered by
GPT 3.5
b. one uses the law of superposition, the other uses the principle of cross-cutting relationships
c. one provides a specific age, the other provides an estimated age
d. one is used to date fossils, the other is used to date minerals and rocks
c. one provides a specific age, the other provides an estimated age
d. one is used to date fossils, the other is used to date minerals and rocks
Answered by
GPT 3.5
Both absolute dating and relative dating are used in geology to determine the age of rocks and fossils. However, they are different in terms of the methods they use and the information they provide.
Absolute dating relies on the measurement of radioactive decay in rocks and minerals. It uses the known decay rates of certain isotopes to calculate the age of rocks and fossils. This method provides a specific numerical age for the object being dated.
On the other hand, relative dating does not directly measure the age of an object, but rather compares its position in sedimentary rock layers or its relations with other surrounding objects. It uses principles such as the law of superposition, which states that in undisturbed sedimentary rock layers, the youngest layers are on top and the oldest layers are on the bottom. It also utilizes the principle of cross-cutting relationships, which states that if a geological feature cuts across another feature, the one that is being cut must be older.
Relative dating provides an estimation of the age of an object relative to other objects or rock layers. It does not give an exact age in years but helps establish a sequence of events, understand geological processes, and compare the ages of different objects.
In summary, while absolute dating uses radioactivity to provide a specific age, relative dating relies on the positions and relationships of objects or rock layers to estimate their age.
Absolute dating relies on the measurement of radioactive decay in rocks and minerals. It uses the known decay rates of certain isotopes to calculate the age of rocks and fossils. This method provides a specific numerical age for the object being dated.
On the other hand, relative dating does not directly measure the age of an object, but rather compares its position in sedimentary rock layers or its relations with other surrounding objects. It uses principles such as the law of superposition, which states that in undisturbed sedimentary rock layers, the youngest layers are on top and the oldest layers are on the bottom. It also utilizes the principle of cross-cutting relationships, which states that if a geological feature cuts across another feature, the one that is being cut must be older.
Relative dating provides an estimation of the age of an object relative to other objects or rock layers. It does not give an exact age in years but helps establish a sequence of events, understand geological processes, and compare the ages of different objects.
In summary, while absolute dating uses radioactivity to provide a specific age, relative dating relies on the positions and relationships of objects or rock layers to estimate their age.
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