Relative Dating

Question 1

Which phrase describes organisms that formed index fossils?

Revolt · Accepted Answer

are extinct

Question 2

The diagram shows horizontal rock layers.

Revolt · Accepted Answer

Layer D is the youngest layer.

Question 3

Which phrase describes the absolute age of a rock?

Revolt · Accepted Answer

is the number of years since it formed

Question 4

The diagram shows horizontal rock layers.

Revolt · Accepted Answer

Layer C is younger than layer A.

Question 5

In which situation is the principle of cross-cutting relationships useful in determining relative age?

Revolt · Accepted Answer

A fault breaks through sedimentary layers.

Question 6

Which feature forms at Earth’s surface from the cooling of lava?

Revolt · Accepted Answer

extrusion

Question 7

The image shows sedimentary rock layers with index fossils and a fault.

Revolt · Accepted Answer

Layer 2 and layer 9 are the same relative age.

Question 8

Which is the first step that geologists must do to compare rock layers at distant locations?

Revolt · Accepted Answer

identify index fossils in one or more layers at one location

Relative Dating Answers