Geologic Time Vocab Review

This is the process when natural forces move weathered rock and soil from one place to another

• erosion
• deposition
• relative age
• mold

When erosion 'puts down' or deposits the weathered rock and soil

• erosion
• deposition
• relative age
• absolute age

Geologic time is divided into three long periods of time called these

• periods
• molds
• casts
• eras

When many types of living things become extinct at the same time

• fossil
• extrusion
• mass extinction
• extinct

Smaller units of Geologic Time; there are a bunch of these with weird names; Jurassic is a familiar one

• era
• period
• unconformity
• cast

An index fossil that looks like a cockroack

• Cenozoic
• Mesozoic
• Trilobite
• ammonite

LONGEST time period of Geologic Time; only single celled organisms

• PreCambrian
• Paleozoic
• Mesozoic
• Cenozoic

Geologic Time we live in; Age of Mammals

• PreCambrian
• Paleozoic
• Mesozoic
• Cenozoic

Geologic Time period called the Age of Reptiles; Dinosaurs were in this one

• PreCambrian
• Paleozoic
• Mesozoic
• Cenozoic

Geologic Time period called the Age of Fish; Organisms with spines first appear

• PreCambrian
• Paleozoic
• Mesozoic
• Cenozoic