Environmental Science – Analysis of Greenhouse Effect Activity

January 30, 2009

Data Analysis:

Create a Graph using Excel.

Open an Excel document.

In column A enter the minutes (do NOT type any words or letters; just type numbers).

In column B enter the Temperature of the Uncovered Jar (do NOT type any words or letters).

In column C enter the Temperature of the Covered Jar (do NOT type any words or letters).

Highlight all your data.

Pull down Insert menu and select Chart.

Choose XY (Scatter).

Click Next and Next again.

In Chart Title, type your name and “Greenhouse Effect”. In x-axis type Time in Minutes. In y-axis type Temperature in Celsius. Click Next.

Select As New Sheet and then Finish and then Print. Cut the edges off of your graph and tape it or glue it in the next blank page in the front of your notebook.

Questions (to be answered in your notebook; you do NOT need to copy the questions):

1. Which of these jars is the greenhouse model and which is the control?

2. What is the purpose of the control?

3. We are trying to answer the question: What is the effect of Earth’s atmosphere on its temperature? What material was modeling the Earth’s atmosphere? Describe one way that our experiment accurately modeled the Earth and its atmosphere and two ways in which it did not.

4. Which part of our data (0-20 minutes or 20-60 minutes) should we focusing on to answer the experimental question? What was happening to many of the bottles during the first 20 mintues?

5. Subtract your uncovered bottle temperature at 20 minutes from the temperature at 50 or 60 minutes (whenever your group finished). Then do the same for the covered bottle. Which one had a greater increase over time? Why? Use Figure 7-12 page 181 to support your answer.

6. If we imagine Earth to be like this bottle, then we can also imagine that humans are causing global warming/global climate change by adding another layer of ________________ __________ to the bottle. List 2 human activities that are contributing to global warming/global climate change (look at page 183 if you don’t know already).

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Environmental Science Lesson 1/27/09 – Ozone Layer

January 27, 2009

Click here for the website.

Answer these questions (the FAQ link, http://www.ozonelayer.noaa.gov/faq/faq.htm, will take you right to these answers). You will not receive full credit unless your answer has the required number of sentences.

1. What is ozone and where is it in the atmosphere? (4 sentences)

2. How is ozone formed in the atmosphere? (3 sentences and the chemical reaction too)

3. Why do we care about atmospheric ozone? (3 sentences and Figure Q3-1)

4. Is total ozone uniform over the globe? (1 sentence and where and when are the largest and smallest values/amounts of ozone)

5. How is ozone measured in the atmosphere? (3 sentences and Figure Q5-1)

6. What are the principal steps in stratospheric ozone depletion caused by human activities? Copy the 6 principal steps of Principal Steps in the Depletion of Stratospheric Ozone. Also, what are the two Halogen Source gases?)�

7. What emissions from human activities lead to ozone depletion? (3 sentences)

8. What are the reactive halogen gases that destroy stratospheric ozone? (3 sentences)

9. What are the chlorine and bromine reactions that destroy stratospheric ozone? (copy Figure Q9-1 and Figure Q9-2)

10. Why has an “ozone hole” appeared over Antarctica when ozone-depleting gasses are present throughout the stratosphere? (2 sentences)

11. How severe is the depletion of the Antarctic ozone layer? (2 sentences and copy the bottom graph from Figure Q11-2)

12. Is there depletion of the Arctic ozone layer? (2 sentences)

13. How large is the depletion of the global ozone layer? (2 sentences)

14. Do changes in the Sun and volcanic eruptions affect the ozone layer? (1 sentence)

15. Are there regulations on the production of ozone-depleting gases? (3 sentences and the bottom graph from “Effect of the Montreal Protocol”).

16. Has the Montreal Protocol been successful in reducing ozone-depleting gases in the atmosphere? (2 sentences)

17. Does depletion of the ozone layer increase ground-level ultraviolet radiation? (1 sentence)

18. Is depletion of the ozone layer the principal cause of climate change? (1 sentence)