CK-12 Physical Science - For Middle School

19.4. References http://www.ck12.org

19.4 References

1. Tim Fields. http://www.flickr.com/photos/24327829@N04/6737005997/. CC BY 2.0


2. Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0


3. Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0


4. Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0


5. Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0


6. Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0


7. Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0


8. User:Vargklo/Wikipedia, modified by CK-12 Foundation. http://commons.wikimedia.org/wiki/File:Wave_
   motion-i18n.svg. Public Domain


9. Top: U.S. Geological Survey; Bottom: Flickr: Axion23. Top: http://geomaps.wr.usgs.gov/parks/sea/gwave.
   html; Bottom: http://www.flickr.com/photos/gfreeman23/5137640341/. Top: Public Domain; Bottom: CC
   BY 2.0


10. David Rydevik. http://commons.wikimedia.org/wiki/File:2004-tsunami.jpg. Public Domain


11. Christopher Auyeung. CK-12 Foundation.


12. Christopher Auyeung. CK-12 Foundation.


13. Christopher Auyeung. CK-12 Foundation.


14. Kyle Taylor. http://www.flickr.com/photos/kyletaylor/394160033/. CC BY 2.0


15. Flickr:daveynin. http://www.flickr.com/photos/daveynin/7130041653/. CC BY 2.0


16. Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0


17. Iain Watson. http://www.flickr.com/photos/dagoaty/4657318099/. CC BY 2.0


18. Student: Flickr:MaxTorrt; Radio: Flickr:Kansir. Student: http://www.flickr.com/photos/16953895@N05/8
    299424201/; Radio: http://www.flickr.com/photos/kansirnet/231639326/. CC BY 2.0


19. Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0


20. Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0


21. Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0