1 / 8

Exploring the Atmosphere: Past, Present, and Future

Delve into the evolution of Earth's atmosphere, from its formation billions of years ago to understanding its composition and the impacts of human activities. Discover the layers, gases, and crucial role it plays in sustaining life.

petra-knox
Download Presentation

Exploring the Atmosphere: Past, Present, and Future

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Atmosphere 17 November 2014

  2. “Don’t knock the weather; ninety percent of people couldn’t start a conversation if it didn’t change once in a while.” “Water and air, the 2 essential fluids on which all life depends, have become global garbage cans.” 17 November 2014

  3. The Atmosphere • Understand the development of the atmosphere. • Learn about the structure & composition of the atmosphere. • Consider some of the human impacts on the atmosphere. 17 November 2014

  4. Formation of the Atmosphere • 5 billion years ago – no atmosphere • Volcanic eruptions released gases & UV radiation levels v. high – no life forms. • Early atmosphere 5-4.5 billion yrs BP • Water vapour 80% • Carbon dioxide 12% • Sulphur dioxide 7% • Nitrogen 1% & other trace gases • UV radiation reduced and early organisms used CO2 and released O2 – atmosphere slowly developed that could support plant and animal life. 17 November 2014

  5. The Atmosphere • Use page 17 of book to make notes on the 4 layers of the atmosphere; include: • Name • Location • Features e.g composition, wind speeds, air pressure etc. 17 November 2014

  6. 17 November 2014

  7. Human impact on the atmosphere • For each factor consider the effects at local, national/regional and global scale. • Human activity - ? 17 November 2014

  8. Composition of the Atmosphere • What gases make up the atmosphere? • What is their role/importance? 17 November 2014

More Related