Fossils, relative and absolute dating

What does carbon-14 decay into?

• Nitrogen
• Lead
• Uranium
• Cobalt

Which of the following is not a trace fossil?

• tracks
• burrows
• ammonites
• coprolites

_______________ is the idea that older rock layers can be found below younger rock layers in undisturbed geologic columns.

• principal of original horizontality
• principal of superposition
• principal of cross-cutting relationships
• principal of unconformities

Where are older rock layers found?

• on top of younger rock layers
• under younger rock layers
• near igneous intrusions
• near faults

Which of the following is an index fossil?

• brachiopods
• tyrannosaurus rex
• coprolites
• trilobites

Which comes first a mold or a cast fossil?

• mold
• cast

___________ states that the earth has changed gradually over long periods of time.

• uniformitarianism
• catrastorphism
• superposition
• disconformities

___________ is the idea that the earth changes very rapidly over short periods of time.

• uniformitarianism
• catrastorphism
• superposition
• disconformities

Most fossils are found in __________ rock layers

• metamorphic
• sedimentary
• igneous

_________ fossils can be found in tar, amber, deserts, and ice.

• trace
• original remains
• petrified
• cast