BEFORE: What do you know about ocean acidification? B. AFTER:NOW What do you know about C. What did you like best? Intro video? Facebook slide? Blowing into bag? Quick shell activity? Nothing? Other? D. What would you still like to know or other questions that you have?

http://www.youtube.com/watch?v=Wyvc_r_0HgA

EARTH 2012 Wilmington, NC Summer of 2011 tide pooling Length: 0:20 Marina Sibling EARTH 2012 Wilmington, NC EARTH 2061 Summer of 2011 tide pooling Length: 0:20

International—http://www. ocean-acidification. net/ NOAA—http://www International—http://www.ocean-acidification.net/  NOAA—http://www.pmel.noaa.gov/co2/story/Ocean+Acidification USGS—http://coastal.er.usgs.gov/ocean-acidification/ 

Ocean Acidification UNIVERSAL INDICATOR pH color red/orange orange Work in groups of two. Take a ziploc with water and a straw Check the pH of your water (you can use pH paper too if you’d like) Blow into the straw until you see a color change. What pH is the water now? What makes the pH change? Place a shell/test fragment into the bag, any reaction? Compare yours to the vinegar beaker. UNIVERSAL INDICATOR pH color red/orange orange yellow yellow/green green blue/green blue/gray violet