Air Pollution Unit 2 Section 2.

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Presentation transcript:

Air Pollution Unit 2 Section 2

Air, noise and light pollution Section 2

Objectives Foldable Using the objectives handout, trim the paper along the top, right side and bottom of the outside box to fit the notebook Cut the lines between each box to make a flap Tape or glue the left side of this contraption into your ISN (this allows you to fold the objectives back later) Later, you will write down the objectives once you’ve learned them L End of Slide

Brainstorm Why is the surface area of the human lung so large? The human lungs have about 300 million tiny air pockets called alveoli. Altogether, the surface area in the lungs of humans is equivalent to the area of a tennis court. Why is the surface area of the human lung so large? Describe the effects of pollutants on the human lungs. Brainstorm R

Air Pollution Air pollution can cause serious health problems, especially for people who are very young, very old, or who have heart or lung problems. Air pollution adds to the effects of existing diseases such as emphysema, heart disease, and lung cancer. The American Lung Association has estimated that Americans pay tens of billions of dollars a year in health costs to treat respiratory diseases caused by air pollution. L End of Slide

Short Term Effects of Air Pollution on Health Many of the effects of air pollution on people’s health are short-term and reversible if their exposure to air pollution decreases. The short-term effects of air pollution on people’s health include headache; nausea; irritation to the eyes, nose and throat; coughing; tightness in the chest; and upper respiratory infections, such as bronchitis and pneumonia. Pollution can also make the conditions of asthma and emphysema worse for certain individuals. L End of Slide

Long Term Effects of Air Pollution on Health Long-term effects on health that have been linked to air pollution include emphysema, lung cancer, and heart disease. Long-term exposure to air pollution may worsen medical conditions suffered by older people and may damage the lungs of children. L End of Slide

Indoor Air Pollution The quality of air inside a home or building is sometimes worse than the quality of air outside. Plastics and other industrial chemicals are major sources of pollution. These compounds can be found in carpets, building materials, paints, and furniture, particularly when these items are new. L End of Slide

What’s going on here? Cut and glue/tape the picture on a right page in your notebook. As we go through each room, fill in the possible air pollutants. R

R

What’s going on here?

Indoor Air Pollution Sick-building syndrome is a set of symptoms, such as headache, fatigue, eye irritation, and dizziness, that may affect workers in modern, airtight office buildings. Sick-building syndrome is believed to be caused by indoor air pollutants. Sick-building syndrome is most common in hot places where buildings are tightly sealed to keep out the heat. L End of Slide

Indoor Air Pollution Identifying and removing the sources of indoor air pollution is the most effective way to maintain good indoor quality. Ventilation, or mixing outdoor air with indoor air, is also necessary for good air quality. When activities such as renovation and painting, which cause indoor air pollution, are undertaken, ventilation should be increased. L End of Slide

Radon Gas Radon gas is colorless, tasteless, odorless, and radioactive. Radon is one of the elements produced by the decay of uranium, a radioactive element that occurs naturally in the Earth’s crust. Radon can seep through cracks and holes in foundations into homes, offices, and schools, where it adheres to dust particles. L End of Slide

Radon Gas When people inhale the dust, radon enters their lungs. In the lungs, radon can destroy the genetic material in cells that line the air passages. Such damage can lead to cancer, especially among people who smoke. Radon is the second-leading cause of lung cancer in the United States. L End of Slide

Asbestos Asbestos is any of six silicate minerals that form bundles of minute fibers that are heat resistant, flexible, and durable. Asbestos is primarily uses as an insulator and as a fire retardant, and it was used extensively in building materials. However, for all of its uses, the government banned the use of most asbestos products in the early 1970s. L End of Slide

Asbestos That was because exposure to asbestos in the air is very dangerous. Asbestos fibers can cut and scar the lungs, causing the disease asbestosis. Victims of the disease have more and more difficulty breathing and may eventually die of heart failure. L End of Slide

Noise Pollution A sound of any kind is called a noise. However, some noises are unnecessary and can cause noise pollution. Health problems that can be caused by noise pollution include loss of hearing, high blood pressure, and stress. Noise can also cause loss of sleep, which may lead decreased productivity at work and in the classroom. L End of Slide

Noise Pollution A decibel is the most common unit used to measure loudness, and is abbreviated dB. The quietest sound that a human ear can hear is represented by 0 dB. For each increase in decibel intensity, the decibel level is 10 times higher than the previous level. A sound of 120 dB is at the threshold of pain. Permanent deafness may come as a result of continuous exposure to sounds over 120 dB. L End of Slide

Light Pollution Light pollution does not present a direct hazard to human health, but it does negatively affect our environment. The use of inefficient lighting in urban areas is diminishing our view of the night sky. In urban areas, the sky is often much brighter than the natural sky. L End of Slide

Light Pollution A more important environmental concern of inefficient lighting is energy waste. Energy is wasted when a light is directed upward into the night sky and lost to space. Examples include lighting on billboards, poor-quality street lights, and the lighting of building exteriors. Solutions to this problem include shielding light so it is directed downward, using time controls so that light is used only when needed, and using low-pressure sodium sources, which are the most energy-efficient sources of light. L End of Slide

To sum things up… Using the diagram provided, indicate the organs that are most likely to be affected by air pollution, including both short-term and long-term effects of pollution on each of these organs. Go back and fill in the section objectives foldable R L