PDS APES 8th Period 2009-10

This is a video I’ve seen that will make you wonder about fuel emissions. Be ready. It’s kind of scary.

So I am hoping someone will be on here and want to answer this: I understand the equations for CFCs and how they destroy our ozone: CCl3F + UV > CL + CCl2F Cl + O > ClO +O2 ClO + O > Cl +O2 which then creates a positive feedback reaction. But what part [...]

So…did you laugh at my memory-trick email about the six compounds the EPA must track under the Clean Air Act? If you missed, it here is is again: Q: How do you remember the 6 air pollutants covered under NAAQS (National Ambient Air Quality Standards)? A: NOSCLP NOx Ozone SO2 CO Lead PM So, get [...]

Since our scribe never got this topic posted, here is a link to a good summary of the topic from the other class: http://pdsblogs.org/pdsapes510/2010/04/22/acid-rain/ Don’t forget indirect effects of acidic soils…just as important as direct damage from acidic precipitation!

So, last year the APES text (published 2008) had a section on carbon offsets-first time I’ve seen it in a school textbook. There are many companies out there now marketing carbon offsets to reduce your “carbon footprint.” Terrapass is a popular one. You can offset one year’s worth of air travel (an estimated 8,000 pounds [...]

Mr. Willard said that we should already know about the background about ozone, but here’s a quick glance at what he was talking about: Ozone is a “global sunscreen” for the Earth. It blocks  and absorbs 95% of UV radiation! The ozone layer is 12 miles or 20 kilometers thick. The ozone layer exists in [...]

*Note: Yet another guest post from Kevin H. in the other class as I forgot to ask for a scribe! At the end of class on Friday Mr Willard left us with 5 questions regarding global climate change. These questions were as follows: 1. Is the Earth warming? 2. If so, is this warming unnatural? [...]

*Note: This is a guest blog post by Coco in 5th period since I forgot to name a scribe. Last Friday, we discussed the origins of global warming. However, climate change is a more accurate term since some regions are cooling, not warming. First off, it must be established that not all greenhouse gases, like [...]

To commemorate Earth Day PDS 5th grade teachers and students made signs to carry around the Ferry Boat reminding parents to turn cars off while in line picking up their children. They also modified the “stop and go” signs to reflect the No Idling initiative for all teachers on traffic duty to carry. LS plans [...]

Your car breathes in from the air and the fuel tank and it breathes primary pollutants out, which then are converted into secondary pollutants. The central reaction in your car starts with the reactants in the air (78% N2, 21% O2), and the fuel tank feeds fuel to the engine. However, the reactions in your [...]