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Studying Air Quality

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Studying Air Quality Is it possible to collect primary evidence in urban areas? * * History - Safety sheet look for risks and controls * Ariel view - could use ... – PowerPoint PPT presentation

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Title: Studying Air Quality


1
Studying Air Quality
  • Is it possible to collect primary evidence in
    urban areas?

2
Examination Board Learning Objectives
  • OCR Science A - C1 Air Quality
  • C1.1 Which chemicals make up air, and which
    ones are pollutants? How do I make sense of data
    about air pollution?

3
How Science Works Objectives
  • Assessment Objective 3 (AO3)
  • Practical, enquiry and data-handling skills
  • Candidates should be able to
  • carry out practical tasks safely and skillfully
  • evaluate the methods they use when collecting
    first-hand and secondary data
  • analyse and interpret qualitative and
    quantitative data from different sources
  • consider the validity and reliability of data in
    presenting and justifying conclusions.

4
Describe this picture
5
Why wear a mask?
6
Where does pollution go?
7
Where is the best place to have refreshment
facilities?
  • These are the opinions of two people
  • What do they need to do to justify their claims?
  • You need to help them

8
Where is it best to have refreshment facilities?
I am an extremely busy commuter whom pays my
council tax. I can not believe the council are
considering putting refreshment facilities so far
away from the road!
What? Air pollution from sources such as cars,
will be carried by the wind into the marshes!
The pollution levels will ultimately be the same!
Unseen risks!! What risks can be so unseen that
I will be unable to use the facilities when I am
in a hurry.
Dont be so silly dear! Air pollution will be
highly concentrated near to the source and thus
situating the café should be away from this
Pollution of course do you not read the papers?
Having cafes etc. near to the road will bring
you into contact with more SOx, NOx and sooty
particles thats without mentioning all that
noise pollution.
Well of course the council are considering such a
placement there are unseen risks near to the
road
9
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10
Where is it best to live in your area?
I live near the main road at the bottom of the
Heath near excellent transport links. My house
is the same size as the homes at the top of the
hill but has been valued as less by my estate
agent!
Unseen risks!! What risks can be so unseen that
they leave my house 50,000 cheaper than yours?
What? Air pollution from sources such as cars,
will be carried by the wind up the hill! The
pollution levels will ultimately be the same!
Dont be so silly dear! Air pollution will be
highly concentrated near to the source and thus
your home and not mine
Pollution of course do you not read the papers?
Living near to the road will bring you into
contact with more SOx, NOx and sooty particles
thats without mentioning all that noise
pollution.
Well obviously I live at the top of the hill. I
have a bicycle as transport links are limited.
But my home is worth a lot more than yours due to
the unseen risks
11
Where is the best place to live in this area?
  • These are the opinions of two people
  • What do they need to do to justify their claims?
  • You need to help them.

12
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13
Possible methods
  • Sticky tape 5cm in length
  • 2m height up tree
  • Apply pressure
  • Remove and place on to sheet

Other methods?
14
History Safety
15
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16
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17
Reviewing methods.. Lets go!
18
Particles on sticky tape
19
Particles on selotape
20
Post fieldwork
  • Sampling the sample
  • Calculating the average percentage cover.
  • Plotting the data.
  • Analysing the data.
  • Can we bring evidence to the argument?
  • New scenarios what if?
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