1) Geologic time scale a) Arrangement of events b) Rock that forms when sediment from erosion is compressed together. c) When small pieces of rock (sediment) are moved around by wind and/or water. 2) Sedimentary rock a) When small pieces of rock (sediment) are moved around by wind and/or water. b) Rock that forms when sediment from erosion is compressed together. c) When sediment stops moving and collects in a new area. 3) Erosion a) When sediment stops moving and collects in a new area. b) When rocks are broken down into smaller pieces. c) When small pieces of rock (sediment) are moved around by wind and/or water. 4) Intrusion a) When rocks are broken down into smaller pieces. b) When molten rock from inside Earth moves through cracks in the rock layers. c) The age of something is based on its placement. 5) Relative dating a) The age of something is based on its placement. b) When molten rock from inside Earth moves through cracks in the rock layers. c) The exact age of something. 6) Fossil a) The exact age of something. b) The movement of Earth’s plates that can cause rock layers to move. c) Evidence of past life that have been preserved in rocks. 7) On the geologic time scale, what is bigger - an Era or a Period? a) Era b) Period 8) What usually separates Eras? a) The time in between b) One species goes extinct c) Several species goes extinct (a mass extinction) d) When new fossils are found 9) What is the biggest difference between the fossil record and geologic time scale? a) The fossil record is a record of all the fossils discovered on Earth and the Geologic Time Scale is used to organize Earth's history b) The geologic time scale is a record of all the fossils discovered on Earth and the fossil record is used to organize Earth's history

Geologic Time Scale Vocabulary

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