Building A Timeline Lesson 2 Quiz

First & Last Name

When geologists match rocks' ages based on their layers and the fossils within their layers

• uniformitarianism
• unconformitities
• rock records
• correlation
• key bed

Aldo found a rock that had six layers. When he took it to a geologist, the geologist noticed a gap or break in the rocks' record. What are these gaps/breaks in a rocks' record called?

• uniformitarianism
• unconformitities
• rock records
• correlation
• key bed

The history of a rock

• uniformitarianism
• unconformitities
• rock records
• correlation
• key bed

A special layer of rock formed by volcanoes, meteors, or glaciation

• uniformitarianism
• unconformitities
• rock records
• correlation
• key bed

Geological processes that happened in the past still happen today

• uniformitarianism
• unconformitities
• rock records
• correlation
• key bed

Geologists found two rocks (Rock A and Rock B), both had two layers. The fossils in the layers did not match. Which rock is older?

• Rock A
• Rock B
• There is not enough information provided to determine to ages of the rocks
• They are the same age

Matt was hiking the Grand Canyon and noticed two rocks, side by side, that had different colored layers. He talked to a Geologist who determined that the rocks were the same age, despite their layers not matching. How did the geologist know they were the same age?

• he looked at the type of rocks
• he looked at the layers
• he looked at the fossils inside the layers
• there is not enough information provided to answer the question

If a rock has a layer caused by volcanic ash, this layer is called a ______________.

• correlation
• key bed
• unconformity
• gap in the rock record