Atmosphere Origin & Evolution Unit Presentation PPT With Student Summary Notes

A concise 24-slide PPT product designed as an introduction for a typical middle school / early high school unit on the evolution of the atmosphere with a focus on how the composition of atmospheric gases changed over time. These topics include: what is the atmosphere, gas composition f the atmosphere of the early Earth, during the emergence of cyanobacteria, during the emergence of plants, the current period, and what future models predict.

PPT Contents:

Part 1: Origin & Evolution of the Atmosphere

• Definition of atmosphere
• Composition of our current atmosphere
• Composition of the early Earth atmosphere
• Five changes that occurred to alter the atmosphere over time:
  • Cooling down of early Earth
  • Emergence of cyanobacteria
  • Emergence of plant life
  • Proliferation of plant life (and creation of ozone)
  • Emergence of denitrifying bacteria

• Human effects on the atmosphere (e.g. greenhouse gas emissions)
• Environmental and human impacts of climate change

NEW! Includes Detailed Student Summary Notes Document (6 Pages Total)

• This PPT now includes a 3-page student summary notes document with a corresponding 3-page answer key for teachers.
• Summary notes for my earth science PPTs feature fill in the blank questions, labeling, and completing summary tables.
• Questions are directly tied to each slide, in chronological order.

PPT Downloadable in 2 Formats:

• This product comes in 2 formats: a static PDF document and fully-editable PPTX document
• Download the full PDF preview to see EXACTLY what you are getting!

Relevant NGSS Disciplinary Core Idea(s) Addressed by This Product:

NGSS - MS-ESS2.A

• Earth & Space Sciences - Earth's Systems - Earth's Materials and Systems

NGSS - MS-ESS1.C

• Earth & Space Sciences - Earth's Systems - History of Planet Earth

NGSS - MS-ESS2.D

• Earth & Space Sciences - Earth's Systems - Weather and Climate

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Terms of Use:

Copyright © Douglas Enns. All rights reserved by author. This product is to be used by the original downloader only. Copying for more than one teacher, classroom, department, school, or school system is prohibited. This product may not be distributed or displayed digitally for public view. Failure to comply is a copyright infringement and a violation of the Digital Millennium Copyright Act (DMCA). Clipart and elements found in this document are copyrighted and cannot be extracted and used outside of this file without permission or license. Intended for classroom and personal use ONLY.