relative age, absolute age, and geologic time

In order for an event to affect a rock, the rock must exist first.

• True
• False

Geologic features, such as faults, and igneous intrusions are younger than the rocks they cut because the events like folding and faulting must occur first before a rock can exist.

• True
• False

The shorter the timespan that species existed, the more precisely the index fossil reflects the age of the rock.

• True 
• False

If one rock body contains fragments of another rock body, it must be younger than the fragments of rock it contains.

• True
• False

What does a disconformity in a sedimentary rock sequence represent?

• A. Gap in the rock record
• B. Volcanic Eruption
• C. Duplicated strata in the rock record
• D. Flood event

Which of the following happened most recently?

• A. Deposition of Unit C
• B. Deposition of Unit B
• C. Deposition of Unit F
• D. Tilting of C, D, E, and F

• A-D-C-B-E
• B-E-C-D-A
• A-B-E-C-D
• A-C-B-E-D

• C-E-D-B-A
• A-B-D-E-C
• A-D-B-E-C
• D-A-B-E-C

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

• A
• B
• C

Which rock layer in the diagram seems to be the oldest?

• F
• E
• B
• A