1 / 11

Chapter 1.2

Chapter 1.2. Earth’s Spheres. Earth. The only planet currently known to support life. This capacity is due to the interactions among its 4 spheres… Atmosphere Hydrosphere Geosphere Biosphere. Sphere #1. THE ATMOSPHERE. What Is the Atmosphere?.

tschultz
Download Presentation

Chapter 1.2

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. Chapter 1.2 Earth’s Spheres

  2. Earth • The only planet currently known to support life. • This capacity is due to the interactions among its 4 spheres… • Atmosphere • Hydrosphere • Geosphere • Biosphere

  3. Sphere #1 THE ATMOSPHERE

  4. What Is the Atmosphere? • A mixture of gases, mostly nitrogen (N) and oxygen (O) with smaller amounts of argon, carbon dioxide, and other gases • Held to the Earth by gravity • Thins with altitude

  5. Why Is the Atmosphere Important? • Supports Life • Animals need oxygen • Plants need carbon dioxide (CO2) • Regulates Climate • Retains heat at night • Shields from sun’s radiation during the day • Wind transports heat from Equator and cold from Poles

  6. Sphere #2 Geosphere

  7. The Geosphere • The solid Earth • Rocks, mountains, beaches, ocean basins, magma, mantle • The geosphere is slowly changing • Volcanic eruptions form new land • Mountains are uplifted • Continents are in slow but constant motion

  8. Sphere #3 THE HYDROSPHERE

  9. What Is the Hydrosphere? • All the earth’s water • Most of this water is salt water • 3% of the hydrosphere contains fresh water • Most of this water is frozen in glaciers • Remaining water is found in groundwater, lakes, water vapor, and river water. • All the water on Earth is recycled… • No new water is ever created!

  10. Sphere #4 THE BIOSPHERE

  11. What Is the Biosphere? • The zone inhabited by life • Includes the uppermost geosphere, the hydrosphere, and lower atmosphere • Includes all forms of life • Single-celled protozoans, to jellyfish to redwood trees to people.

More Related