8 Rock Record Practice

What scientific law tells us that if one rock layer crosses over other layers, then that layer of rock will be younger than any rock layers that it crosses?

• Cross-cutting

• Original Horizontality

• Unconformities

• Inclusions

In the diagram, what does letter D represent?

• A rock layer

• An earthquake

• An unconformity

• An inclusion

What scientific law tells us that if one rock layer contains pieces or fragments of another rock layer, then the fragments will be older than the rock layer that surrounds it.

• Cross-cutting

• Original Horizontality

• Unconformities

• Inclusions

Correctly sequence the layers of rocks oldest to youngest 

• A,D, C, B, E
• E, B,C D, A
• B,E,C, D, A

According to the law of superposition, which layer is the youngest?

• A
• B
• C

In the diagram, what scientific law tells us that rock layer D is older than rock layer B?

• Cross-cutting

• Inclusions

• Superposition

• Unconformities

When scientists are trying to compare things to see which geological artifacts are older or younger rather than find the actual age of something, this is called ____________.

• Relative aging

• Geologica aging

• approximate aging

• absolute aging

_{Which rock layer contains the newest fossils?}

• F
• E
• B
• C

What is preservation method for the fossil shown in the picture?

• Cast
• Mineral replacement
• carbon film
• Trace fossil

According to the law of superposition, the oldest fossils are found 

• At the top of the rock layers
• Near the bottom of the rock layers
• In the middle of the rock layers
• Somewhat near the surface