SCIENCE
EARTH SCIENCE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
layers with different fossils
|
|
|
layers with similar fossils
|
|
|
layers of equal thickness
|
|
|
None of the above
|
Detailed explanation-1: -In 1796, William Smith, an English surveyor, noticed that the most distinctive characteristics of many rock layers were their fossils. He concluded that layers of rock containing the same fossils were the same age.
Detailed explanation-2: -Relative age is the age of a rock layer (or the fossils it contains) compared to other layers. It can be determined by looking at the position of rock layers. Absolute age is the numeric age of a layer of rocks or fossils. Absolute age can be determined by using radiometric dating.
Detailed explanation-3: -In an undisturbed sequence of rock layers, those found on the bottom are the oldest, while the layers above are younger.
Detailed explanation-4: -Among the evidence that Alfred Wegener provided for his theory of continental drift was that rock strata laid down at the same time in Africa and South America contained identical fossils-even though today they are on opposite sides of the Atlantic.