Question

1. which of the following is the best way to determine the relative age of a rock layer?

○ look at the chemical composition of the rock layer.
○ look at the length of the layer within the rock layer.
○ look at the thickness of the layer compared to other layers.
○ look at the position of the layer compared to other layers.

Explanation:

Relative age dating of rock layers relies on the principle of superposition, which states that in undisturbed rock sequences, older layers lie below younger layers. Comparing a layer's position to others directly applies this key principle to determine its relative age, while the other options do not address relative age determination effectively.

Answer:

D. Look at the position of the layer compared to other layers.