Science Probe II Technology Activities

Chapter 20

Internet

There has been much publicity in past years about the existence of an ozone hole in the upper atmosphere. However, recently there has been little said about it. Why is this so? Conduct an Internet search to find:

a.What current research has learned about the ozone hole?
b.What chemical reactions are believed to cause it?
c.How large is it?
d.How much does it change from season to season and year to year?
e.What is predicted about it in the future?

It might also be helpful to correspond through e-mail or talk in a web discussion site with an atmospheric scientist or an environmental specialist to get your answers. Prepare a multimedia presentation to inform your classmates of what you have learned. Below is a web site to get you started:

The Ozone Hole Tour
http://www.atm.ch.cam.ac.uk/tour/

Application Software

Activity 20C – After you have selected the material to research in this activity and listed the ingredients, conduct an Internet search on the product and its ingredients. Connect with the web page of the manufacturer to obtain information about why these ingredients are used in the product. Use a word processing program to record your answers to these questions and what you think each chemical might have on the biotic and abiotic environment and how any pollution from the product could be eliminated. Prepare a presentation to share what you have learned with your classmates.

Activity 20E – Use a spreadsheet program to make your data tables for Parts II and III as directed in this activity. Record the data from Figure 20.14 in the spreadsheet data table as suggested in the activity. Use the graphing feature of the spreadsheet program to plot the Pollution level (in PPHM) on the vertical axis and Time of day on the horizontal axis. Record the data from Table 20.3 in the spreadsheet data table as directed in the activity. Use the graphing feature of the spreadsheet program to plot the CO level (in PPM x 10) on the vertical axis and Time of day on the horizontal axis. Print the final spreadsheet data tables and graphs, and secure them in your SCIENCE PROBE Logbook where you will answer the discussion questions.

Activity 20F – Use an Internet search to find out about the greenhouse effect, what are considered to be greenhouse gases, and what impact an increased greenhouse effect may have on your life. Use a presentation, graphics, or similar program to do your presentation as directed in the activity.