1. EARTH SYSTEMS EVENTS & INTERACTIONS

2. Event Hydrosphere Biosphere Atmosphere Geosphere

3. Event Hydrosphere Biosphere Atmosphere Geosphere

4. http://www.sciencenewsforkids.org http://usatoday30.usatoday.com

5. Event Hydrosphere Biosphere Atmosphere Geosphere Yellowstone Forest Fires

6. EVENT - HYDROSPHERE Lack of rain, moisture in soil, plants Heat from fire removed moisture

7. EVENT - ATMOSPHERE Lightning strike may have started the fires Pollution (CO 2 ) may have been produced

8. EVENT - GEOSPHERE Heat from the fires may have caused some rocks to break

9. EVENT - BIOSPHERE Dead branches and pine needles on the ground may have provided fuel Seeds of some plants require that their outer shells be burned before they could sprout

10. GEOSPHERE - HYDROSPHERE Increased erosion of soil increases sediments in water

11. GEOSPHERE - BIOSPHERE decrease in plants may have result in increased soil erosion

12. GEOSPHERE - ATMOSPHERE Ash particles in the air carried by the wind and dropped on the ground miles away from the forest fires; the ash particles--which have a high pH—can change the pH of the soil

13. HYDROSPHERE - BIOSPHERE Ash particles in the water can clog the gills of fish and other aquatic organisms and choke them

14. HYDROSPHERE - ATMOSPHERE More rain in neighboring areas because ash particles in the air may have become condensation centers that allow raindrops to form Very dry, windy air can draw moisture out of the living grasses and trees through evaporation

15. BIOSPHERE - ATMOSPHERE Smoke in the air can coat the lungs of animals-- including people--and affect their ability to breathe

16. http://www.livescience.com http://americanhurricanes.weebly.com

17. Event Hydrosphere Biosphere Atmosphere Geosphere Hurricane Katrina

18. INTERACTIONS Hurricane – Biosphere ??? Hurricane – Atmosphere ??? Hurricane – Hydrosphere ??? Hurricane – Geosphere ??? Geosphere – Atmosphere ??? Geosphere – Hydrosphere ??? Geosphere – Biosphere ??? Atmosphere – Hydrosphere ??? Atmosphere – Biosphere ??? Hydrosphere – Biosphere ???

19. GRAPHICS: HTTP://WWW.SCIENCENEWSFORKIDS.ORG HTTP://USATODAY30.USATODAY.COM HTTP://WWW.COTF.EDU HTTP://WWW.CLKER.COM HTTP://WWW.LIVESCIENCE.COM HTTP://AMERICANHURRICANES.WEEBLY.COM