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Geologic Time Scale and the Fossil Record

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Engage: Discuss as a group

What is extinction?

How and why do species go extinct?

What are some examples of extinct species?

How and why do we study extinction events?

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Impact Video

In your lab book, title the next page: Engage- Extinction!

Prompt: What were the effects of a large asteroid impact on past life?

You will watch film and then discuss.

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Asteroid Video First

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Asteroid Video Second

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First… Geologic time- how do we know how old things are???

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Geologic Time Scale

Used by geologists and other scientists to map the timing and relationship between events that have occurred during the history of the Earth.

  • Broken down into Eons(biggest chunk of time), Eras (smaller chunks), and Periods (smaller chunks).

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Fossils- remnants of past life

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Make your own Geologic Time scale

  1. Use the first page (front and back) of the class packet to fill in the Geologic Time Scale. The packet is titled “Exploring Geologic Time Poster”
  2. Then use the next page, titled “Geologic Time with Major Evolutionary Events in the Fossil Record” to fill out the ‘Interesting notes’ section.

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Geologic Time scale Video

  1. In the next blank page of your lab book, title the page ‘Geologic Time scale Video’.
  2. While watching, consider the questions: “What are some categories of Geologic time?” And “How do we determine where one ends and another begins?

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Geologic Time Scale Video

  1. After watching the video, spend 2 SILENT minutes writing what you learned based on the prompts : ““What are some categories of Geologic time?” And “How do we determine where one ends and another begins?”

  • After writing, spend 2 minutes discussing with your elbow partner.

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Finish Making your own Geologic Time scale

  • You started this yesterday. Complete with elbow partner and then we will go over as a class.
  • Use the first page (front and back) of the class packet to fill in the Geologic Time Scale. The packet is titled “Exploring Geologic Time Poster”
  • Then use the next page, titled “Geologic Time with Major Evolutionary Events in the Fossil Record” to fill out the ‘Interesting notes’ section.

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Earth’s History

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Fossils and Fossilization

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Fossils Record

The historical sequence of life on earth based on the number and order of fossils found in the rock layers

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Fossils Record

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Fossil Sort

Goal- Identify fossils collected from each of the Geologic periods to determine what this can tell us about the history of life and the history of earth.

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Remember- Geologic Time Scale!

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Fossil Record

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Fossil Record

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Brachiopod

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Gastropod

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Sea snail

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Hemister Echinoid

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Crinoid

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Interpret your data!