Which is a method of relative dating?
A.
examining historical records to determine when a volcano erupted
B.
using fossils to determine the oldest rock layer in a canyon
C.
measuring the depth of tree bark
D.
using radioactive isotopes to calculate the age of a rock
I think that it's b.
the answer is b
yes, the answer is B. Relative dating is used on objects without radioactive isotopes
i think itg is c. :)
i actulay think it is b. :)
Defenitly B!
You are correct! Method B, using fossils to determine the oldest rock layer in a canyon, is a method of relative dating.
Relative dating is a technique used in geology to determine the age of rock layers and fossils compared to one another. It does not provide an exact age, but it helps in understanding the sequence in which events occurred.
To arrive at this conclusion, scientists use a principle called the Law of Superposition. According to this law, in an undisturbed sequence of rock layers, the oldest rocks are located at the bottom, while the youngest rocks are found at the top.
When it comes to fossils, they are often found in sedimentary rock layers, which are formed from the accumulation of sediments over time. By studying the fossils found in these layers, scientists can determine the relative age of the rocks. If a particular fossil is found in different rock layers, it is safe to say that the fossil is older if it is found in a deeper layer and younger if it is found in a shallower layer.
Therefore, method B, using fossils to determine the oldest rock layer in a canyon, is one of the methods of relative dating.