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Suggested Time: 150 minutes. Science TEKS: 3.11, 4.6, 5.1, 5.2, 5.3, 5.4, 5.5. Math TEKS: 5.11, 5.14, 5.15


This lesson may take longer than previous lessons, due to 3 internet activities that allow student exploration as they learn about air pollution. It may be divided into two class periods as necessary.

During Lesson Four, students learned about the “dual” nature of ozone, and in particular stratospheric ozone. Today, students will learn about tropospheric or low-level ozone, which is a very harmful air pollutant. Students will learn about how it is created, and how it affects our health. Students will find ways to learn more about air pollution in their own communities, such as by checking the EPA’s Air Quality Index. These explorations will give students a much better understanding of low-level ozone, which they are measuring each day through the GLOBE protocols. Students will also learn about ways that they can help prevent the creation of ground-level ozone.

With this background knowledge, students will spend the second half of class discussing with other students and with the teacher what they have learned about air pollution, ozone, surface temperature, air temperature, humidity, clouds, and wind direction. Students will be asked to create hypotheses regarding what they think the relationships are between the GLOBE measurements they take every day. For example, do they think that on days that that the air temperature is warmer there will be more ozone measured in the air or vice-versa? Today, students will write down the trends they think they will see in their GLOBE measurement data. By the end of the curriculum, on Day Seven, they can use their data to either refute or support their initial conjectures.

Background information

An air pollutant is any gas or particle in the air that causes harm to living things or the environment. Depending on the type of pollutant, the impacts can include respiratory ailments, cancer, birth defects, heart disease, and damage to the environment. Air pollution has these major effects even though it constitutes only a tiny fraction of air molecules. Most air pollutants have a concentration less than one molecule per million air molecules.

There are many types of air pollution . This lesson focuses on the example of tropospheric ozone (also called “low level ozone”) because it can be measured by students, it has been linked to serious respiratory health effects, and because many cities such as Houston exceed federal standards for tropospheric ozone and must find ways to reduce it.

Power plants, factories, vehicles, and other sources do not directly emit ozone into the air. Instead, tropospheric ozone (also called “low level ozone”) forms when emissions of other gases (specifically, nitrogen oxides (NOx) and hydrocarbons (also known as volatile organic compounds, VOCs)) react in the atmosphere in the presence of heat and sunlight. The actual chemical reactions are very complex, but you can think of it in a simplified form as:

Questions & Answers

Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
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Source:  OpenStax, Rice air curriculum. OpenStax CNX. May 09, 2010 Download for free at http://cnx.org/content/col11200/1.1
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