Lect+4+Fall+2011 - 8/26/2011 PracticewithClickers...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
8/26/2011 1 Chapter 1: The Air we Breathe (continued) Aug. 29/2011 Practice with Clickers “Menu” turns clicker ON Scroll up/down with arrows; press “enter” to select Scroll down to “Change Channel”, press “enter” For this class channel 61 For this class, Must be in “Presentation Mode” to answer Q’s Checkmark Æ answer was received (press hard) Clicker will take your last answer Sleep mode 2 Which of the following is NOT a criteria air pollutant? 1. NO 2 2. PM 3 O 3 3. O 3 4. O 2 Review from Last Class pph Æ ppm 6 air pollutants London Fog 4
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
8/26/2011 2 Risks for Air Pollutants Toxicity Intrinsic health hazard of a substance Exposure Concentration and length of exposure time Example: An air sample contains 5000 μg/m 3 CO. Is breathing this concentration of CO harmful? Recap: Concentration Units Common units are: parts per million (ppm) and micrograms per cubic meter (μg/m 3 ) ppm: the number of particles in a million micro is 1x10 6 (1 μg = 0 000001 g (1 μg = 0.000001 g) 1 m 3 (1 meter x 1 meter x 1 meter) = 1000 L You do not need to know how to convert from ppm to μg/m 3 6 Larger, Ex. kilo Appendix 2 7 For quantities much smaller or larger than the base unit, prefixes
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 10/12/2011 for the course ACCOUNTING 221 taught by Professor Staff during the Spring '11 term at North South University.

Page1 / 6

Lect+4+Fall+2011 - 8/26/2011 PracticewithClickers...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online