CPH320: Water Safety Flashcards
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*Leachate is:
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water that collects contaminants as it trickles through wastes
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*The term garbage denotes:
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items that people discard such as trimmings, plastics, and glass.
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*An occupational disease caused by the inhalation of certain dust particles is called: (chapter 13)
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Pneumonconiosis
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*What condition accounted for approximately 12% of occupational illness (excluding injuries) in the U.S.?
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Dermatitis
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*The job classification that involves the highest percentage of anxiety, stresses, and neurotic disease is:
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Technical, sales, and administrative support
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*The sound vibrations picked up by the eardrum are translated into nerve impulses in the:
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Cochlea
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*Threshold Limit Values (TLVs) are:
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airborne concentrations of substances that represent conditions under which all workers may be unaffected.
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*Which of the following topics is NOT included in the file of injury studies? (Chapter 14)
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Hearing loss
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*The highest costs for medical expenditures for treatment of injuries in the U.S. were incurred by:
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Females aged 65+
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*What method for classifying injuries organizes injury data into helpful grouping for making international and national comparisons?
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ICD Injury Matrices
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*The first step in developing strategies for prevention of unintentional injuries is:
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Problem definition
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*The age group with the highest motor vehicle traffic fatality rates in the U.S was:
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Age 16- 20
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composting
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leaves, grass, and food scraps; produces soil in gardens
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incineration
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used to generate energy, at the same time as reducing volume and weight of waste
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Stages of processing sewage
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1. Prelimary- screening of large solids; grit removal by flow attenuation 2. Primary- settlement of suspended solids 3. Secondary- biological treatment; (bacteria breakdown) 3. Tertiary- phosphorus and or nitrate reduction; disinfection by UV or filter membrane
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Advantages of recycling:
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-reduces emissions of greenhouse gasses - prevents pollution generated by new material -decreases the amount of material shipped to landfills -preserves natural resources -opens new manufacturing employment opportunities -saves energy
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ototoxic
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agents that can produce hearing loss
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Silicosis
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inhaling respirable crystalline silica dust -chronic- long period -accelerated- rapidly progressing -acute- heavy exposure short time Sand blasting, cutting tiles and masonry, and grinding cement.
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Decibel (dB)
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the standard measure of the strength of a sound
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difference between unintentional injury and accident?
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accident is not in favor as a scientific term; 5th leading cause of death in world
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Unintentional injuries:
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-children -motor vehicles -firearm -falls
