16.2 Air Quality Warm-Up 16.2 B • Write 2 open-ended questions & 2 closed ended.
16.2 Air Quality Warm-Up 16.2 C • Write 2 open-ended questions & 2 closed ended.
16.2 Air Quality KEY CONCEPT Fossil fuels contain high percentages of carbon and some examples are coal, petroleum, and natural gas. Emissions affect the biosphere. Eco Footprint overshoot
16.2 Air Quality Vocabulary • Particulates: small pieces • Infrared radiation: most of it is heat • Emissions: things that come out • Acid: low pH • Ozone: O3, protects us from Ultraviolet Radiation in the atmosphere, but is bad for our lungs if we are in it.
16.2 Air Quality Ozone: CFCs “chlorofluorocarbons” and Halon damage the ozone O3 Ozzy Ozone
16.2 Air QualityLead: can cause brain/nerve damage.SO2 (Sulfur dioxide) and NO (Nitrates) cause heart problems.Organic compounds: cause CancerCO : (Carbon monoxide) causes headaches & fatigue.
16.2 Air Quality Pollutants accumulate in the air. • Pollution is any undesirable factor added to the air, water, or soil. • Smog is one type of air pollution. – sunlight + pollutants produced by fossil fuel emissions = particulates and ground-level ozone Smog over LA
16.2 Air Quality 16.2 Review #1 1. What are three examples of fossil fuels? 2. Are there any fossil fuels that are a renewable resource? 3. What is another term for heat? 4. Explain what is needed to create smog. 5. Explain when ozone is good and when its bad. 6. What does lead cause? 7. How do you say CO and what does it cause?
16.2 Air Quality • Smog can be harmful to human health. • Acid rain is caused by fossil fuel emissions. – produced when pollutants in the water cycle cause rain pH to drop – can lower the pH of a lake or stream – can harm trees
16.2 Air Quality Air pollution is changing Earth’s biosphere. • The levels of atmospheric carbon dioxide rise and fall over time. • High levels of carbon dioxide are typical of Earth’s warmer periods.
16.2 Air Quality • The greenhouse effect slows the release of energy from Earth’s atmosphere. – sunlight penetrates Earth’s atmosphere – energy is absorbed and reradiated as heat – greenhouse gases absorb longer wavelengths – Greenhouse gas molecules carbon dioxide (CO ) 2 rerelease methane (CH ) water (H O) infrared 4 2 radiation
16.2 Air Quality • Global warming refers to the trend of increasing global temperatures. North Pole
16.2 Air Quality Classwork: • Study Guide 16.2 • Quiz 16.2 is next
16.2 Air Quality HW: 16.3 P.494-496 5 Facts/PageStudy Guide Review 16.21. What are particulates?2. What is pollution?3. What is smog and what are the major components of smog and how does it form?4. What is acid rain?5. How does acid rain affect ecosystems?6. What is the greenhouse effect?7. What is the relationship between the greenhouse effect and global warming? Quiz 16.2 is next