Rock and Fossil Record

Which layer is made up almost entirely of iron and is liquid?

• Layer 1
• Layer 2
• Layer 3
• Layer 4

This rock diagram has a line running through with arrows pointing in the direction of rock movement.  What does the line represent?

• A fold
• A fault
• A tilt
• An intrusion

The diagram shows a cross section of rocks beside a highway. Which rock type is the oldest?

• 1
• 2
• 3
• 4

What force is responsible for the movement of plates in this diagram?

• conduction
• convection
• radiation
• subduction

This graph can be used by geologists to determine...

• the relative ages of rock layers.
• the absolute ages of rock layers.
• the Earth's layers based on seismic activty.
• weathering and erosion of rocks in a canyon.

In this rock layer diagram there are two unconformities, a fault at E and an intrusion at D. Which unconformity occurred first?  How do you know?

• Intrusion D occurred first because the instrusion has been moved by the fault.
• The fault occurred first because it has moved the intrusion D.
• Intrusion D occurred first because it can be seen in all of the rock layers.
• Fault E occurred first because it is a normal fault.

Which rock layer or unconformity is most recent?

• B
• C
• D
• E

Which Rock layer or intrusion is the youngest?

• A
• B
• C
• D

Which rock layer most likely contains fossils of the most recently evolved organisms?

• 1
• 2
• 3
• 4

An archaeologist made the following diagram of a dig site. What can be said about the pottery as compared to the skull found in the site?

• The rock layer with the pottery is more recent than the rock layer with the skull.
• The rock layer with the skull is more recent than the rock layer with the pottery.
• The rock layer with the skull is approximately the same age as the rock layer with the pottery.
• The rock layer with the skull has an absolute date of 17,000 years.