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Dino Doom
5133 11
Dino Doom
5133 Views 11 Adapts
  • time icon Est. Time: 290-320 min150-180 min
  • language icon Language: English
  • phone icon Mobile/Tablet: Yes

Lesson Resources

Alignment Documents

Lesson Version

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Chrome
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Firefox
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Topics Covered

  • Mass Extinction
  • Meteor Impacts
  • Craters
  • Iridium
  • Microfossils
  • Evolution

Lesson Description

The Cretaceous–Paleogene (K–Pg) extinction event, which occurred 66 mya, caused the mass extinction of nearly 75% of the plant and animal species on Earth. This event is marked by a thin layer of sediment which can be found throughout the world in marine and terrestrial rocks. The boundary clay shows high levels of iridium, which is rare on Earth but abundant in asteroids.

Central Question: What evidence exists for the extinction of the dinosaurs and 75% of all animal and plant species at the end of the Cretaceous Period?

Instructional Objective: Construct an explanation, using empirical and observational data from the rock record, for the impact of a natural event on the carrying capacities of an ecosystem and the natural selection that results from limited resources.

Learning Outcomes

  • Learning Outcome #1: Investigate the patterns in fossil data over time that aid in the discovery of significant events in Earth’s history.

  • Learning Outcome #2: Investigate the global patterns in chemical composition data over time that aid in the discovery of significant events in Earth’s history.

  • Learning Outcome #3: Determine the size of the impact crater, using the global patterns of iridium in the rock record, to search for the location of the impact potentially responsible for changes to the environment.

  • Learning Outcome #4: Investigate the global patterns of living organisms, before and after the KPg boundary, to identify the significant changes to life on Earth.

Prerequisites

  • Food Webs

  • Relative Age Dating

  • Evolution Concepts

  • Geologic Time Scale

  • Carrying Capacity

< Back to Lesson details

Previous Versions

Version 0

Released April 2019 | Release Notes


  • First note

Topics Covered

  • Mass Extinction
  • Meteor Impacts
  • Craters
  • Iridium
  • Microfossils
  • Evolution

Lesson Description

The Cretaceous–Paleogene (K–Pg) extinction event, which occurred 66 mya, caused the mass extinction of nearly 75% of the plant and animal species on Earth. This event is marked by a thin layer of sediment which can be found throughout the world in marine and terrestrial rocks. The boundary clay shows high levels of iridium, which is rare on Earth but abundant in asteroids.

Central Question: What evidence exists for the extinction of the dinosaurs and 75% of all animal and plant species at the end of the Cretaceous Period?

Instructional Objective: Construct an explanation, using empirical and observational data from the rock record, for the impact of a natural event on the carrying capacities of an ecosystem and the natural selection that results from limited resources.

Learning Outcomes

  • Learning Outcome #1: Investigate the patterns in fossil data over time that aid in the discovery of significant events in Earth’s history.

  • Learning Outcome #2: Investigate the global patterns in chemical composition data over time that aid in the discovery of significant events in Earth’s history.

  • Learning Outcome #3: Determine the size of the impact crater, using the global patterns of iridium in the rock record, to search for the location of the impact potentially responsible for changes to the environment.

  • Learning Outcome #4: Investigate the global patterns of living organisms, before and after the KPg boundary, to identify the significant changes to life on Earth.

Prerequisites

  • Food Webs

  • Relative Age Dating

  • Evolution Concepts

  • Geologic Time Scale

  • Carrying Capacity

< Back to Lesson details

Previous Versions

Version 0

Released April 2019 | Release Notes


  • First note
  • time icon Est. Time: 290-320 min150-180 min
  • language icon Language: English
  • phone icon Mobile/Tablet: Yes

Lesson Resources

Alignment Documents

Lesson Version

Browser Support

Chrome Browser Icon

Chrome
69+

Firefox Browser Icon

Firefox
63+

Safari Browser Icon

Safari
10+