Relative Age Dating

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

• True
• False

Sediment normally accumulates in vertical layers.

• 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

Floating or swimming marine animals make the best index fossils because they spread rapidly and widely throughout the seas.

• True
• False

Inclusions are younger than the formation of sedimentary rocks that comprise them.

• True
• False

If rocks are folded, the folding is younger than the youngest rock affected.

• True
• False

If rocks are folded into an anticline, the youngest rocks are in the core of the fold.

• 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

Sedimentary rocks that contain fragments of another rock are older that the fragments came from.

• True
• False