This week you should refer to the resources listed under Readings, References, & Recommendations and you need to complete the assignment listed under Event Study Assignment & Rubric. This week’s assignment focuses on…

• Reading and learning more about factors influencing the ozone layer
• Serving as a "Sphere Expert" to your Event Team
• Contributing your Sphere Group's knowledge on the interactions between the event, a volcanic eruption, and your sphere
• Looking for possible interactions and interrelationships between the different spheres of the system 
• Writing causal chains to synthesize the interactions

Suggested Activities for Your Students

Global Change: Earth As Home: An Island Home. This activity helps students understand some of the effects people have on their natural environment. Students act as owners and developers of a lush, 14-square kilometer tropical island and create a plan of development. (This project is an excellent problem-based learning activity.)

Event Study Assignment & Rubric
This week you and your Event Team will look at sphere to sphere interactions and will synthesize your interactions into causal chains.

You may want to review the volcanic eruption event before you do the Event Study Assignment & Rubric.

Read: "The Protective Zone." Ground Truth Studies Teacher Handbook. p. 24

Read: "Good News and ..." Ground Truth Studies Teacher Handbook. p. 28.

Reference: LANDSAT 7 Images and Applications

Recommended Web Sites: Chlorine in the Atmosphere

Virtual Antarctica