Download REHS Examination Review Course: Workbook Chapter 1 Water Questions with Complete Solutions and more Exams Nursing in PDF only on Docsity!
REHS Examination Review Course
Workbook Chapter 1 Water Questions
With Complete Solutions
______________ is the zone where gravity pulls water to a depth where all openings in soil or rock are filled with water correct answer: Saturated Zone _____________ is the top of the saturated zone. May rise or falls according to season or weather correct answer: Water Table _________ is part of the unsaturated zone. The unsaturated zone is directly below the surface and contains some water correct answer: Vadose Zone _____________ is a well that goes thru the confining layer. some of these wells may be pressurized causing water to rise through the limiting layer and above the ground level correct answer: Artesian Well __________ is a system for the provision to the the public of water for human consumption through pipes or other constructed conveyance, if such system has at least ________ connections or regularly serves at least _______ people correct answer: public water system, 15, 25
_____________is the main federal law that ensures the quality of Americans' drinking water correct answer: Safe Drinking Water Act ____________ are public water sources that do not serve a permanent resident population. there are two types _______ and ___________ correct answer: NON community water systems, Transient, and non transient _________________________________________A public water system that regularly supplies water to at least 25 of the same people at least six months per year correct answer: non transient non community water source _______ includes facilities such as roadside stops, commercial campgrounds, hotels, and restaurants that have their own water supplies and serve a transient population at least 60 days of the month correct answer: Transient non community water source _______________ is an intestinal infection marked by abdominal cramps, bloating, nausea and bouts of watery diarrhea._________________ infection is caused by a microscopic parasite that is found worldwide, especially in areas with poor sanitation and unsafe water correct answer: Giardia ________ are finely dispersed solids suspended in water by repelling electrical charges. correct answer: colloids Coagulates are used to cause attractions to form larger particles called_______________ correct answer: flocs
Water contaminants that are linked to acute health risk are _____________________ and ___________ correct answer: microbiological contaminants; nitrates ______________ comes from nitrogen, a plant nutrient supplied by inorganic fertilizer and animal manure. Additionally, airborne nitrogen compounds given off by industry and automobiles are deposited on the land in precipitation and dry particles. Other nonagricultural sources of nitrate include lawn fertilizers, septic systems, and domestic animals in residential areas. correct answer: Nitrate contamination _______________________ refers to the non- intended or accidental introduction of infectious material like bacteria, yeast, mould, fungi, virus, pri- ons, protozoa or their toxins and by- products correct answer: Microbiological contamination Water contaminants that are linked to chronic health risk include _______, __________, __________, and _____________ correct answer: VOCs, IOCs, SOCs, Radionuclides VOC stands for ____________________. VOCs are emitted as gases from certain solids or liquids. They are often found in house hold chemicals correct answer: volatile organic chemicals IOCs stands for ___________________. IOCs are elements or compounds found in water supplies and may be natural in the geology or caused by activities of man through mining, industry or agriculture. Some examples are Arsenic, Copper, Lead correct answer: Inorganic chemicals
SOCs stands for _____________ are man-made compounds used for a variety of industrial and agricultural purposes. This group of contaminants includes pesticides, PCBs, and dioxin. correct answer: Synthetic organic chemicals ___________________ are isotopes of radium, uranium, and radon, among others. Fission products from man made nuclear reactions are also of concern today, particularly radioactive cesium and iodine. The three basic types of radiation are alpha particles, beta particles, and gamma rays. correct answer: Radionuclides The ____________________________ (NPDWRs or primary standards) are legally enforceable standards that apply to public water systems. correct answer: National Primary Drinking Water Regulations Primary enforcement authority, often called __________, refers to state, territory, or tribal responsibilities associated with implementing EPA approved programs correct answer: primacy ___________ which stands for N,N Diethyl-1, Phenylenediamine Sulfate. This test is used to meaure ____________ and ______________ correct answer: DPD; free chlorine, total chlorine _____________ or Stablized Neutral Orthotolidine Residual Test is a test used to measure Residual Chlorine correct answer: SNORT
___________________ can cause a serious lung infection. is contracted by inhaling airborne water droplets containing this bacteria correct answer: Legionella _______________________ is the most common cause of us bacterial diarrhea. Can trigger Guillain- Barre Syndrome correct answer: Campylobacter jejuni ____________________ is caused by the ingestion of food or water infected with feces or vomit of infected humans. This shit use to kill everyone the game the Oregon trail correct answer: Vibro Cholera ______________ can cause "beaver fever". Can be in cyst form or fagellate. Infects the intestines correct answer: Giardia Lamblia _______________ is highly resistant to chlorine. Causes diarrhea disease (often profuse and water) Commonly transmitted by fruits and veggies that are exposed to contaminated water. correct answer: Cryptosporidium ______________ is known as the brain eating amoeba. 98 percent of people infected die within a week. Lives in warm fresh water in tropical and subtropical regions. Infects humans when contaminated water is inhaled through the nasal passages correct answer: naergleria fowleri ____________________ feeds on living intestinal track. Causes amebic dysentery. correct answer: Entamoeba histolytica
_____________ can be transmitted by cats and felines. Most people are asymptomatic. Can cause flu like symptoms, swollen glands, and in severe cases cause brain and organ damage correct answer: toxoplasma gondii _____________ also known as the guinea worm infection. it is transmitted through ingestion of larvae from stagnant fresh water. correct answer: Dracunculus medinesis _____________ Infection occurs when skin comes in contact with contaminated freshwater in which certain types of snails that carry the parasite are living. Freshwater becomes contaminated by_____________ eggs when infected people urinate or defecate in the water. Can cause swimmers itch correct answer: Schistosoma ssp _____________ is a large intestinal round worm. transmitted through contaminated soil or uncooked produce correct answer: Ascaris lumbricoides ___________ in the blood attack the heme of hemoglobin resulting in the inability for it to carry oxygen this condition is called Blue Baby Syndrome. correct answer: Nitrates Methemoglinemia is also called_______________ correct answer: blue baby syndrome _________________ is used to treat blue baby syndrome correct answer: methylene blue
_____________ high turbidity. foul odors. no fish. most polluted zone correct answer: zone of active decomposition ______________ gradual reversal. less odors. More o2 correct answer: zone of recovery ___________________ can be removed by ion exchange, and when caused by corrosion of pipes, by proper pH control. correct answer: Copper ____________ can be removed from water by distillation, reverse osmosis, or electrodialysis correct answer: Chlorides __________________ Maximum contaminant level. Enforced by law. As close to the MCLG as technically and economically feasibly possible correct answer: MCL ___________________ stands for treatment technique. Use for when you cant monitor all the time. correct answer: tt ____________________ is based on 14 days studies. How a toxic substance will effect an animal/human over a short period of time correct answer: acute toxicity _________________ is based on a 90 day study. How a toxic substance will effect an animal/human over a 90 day period of time correct answer: subchronic toxicity _________________ is based on a study that last a year or longer. How a toxic substance will effect an animal/human over a year or longer correct answer: chronic toxicity
_______________, ___________________, and _______________ are used as bacteria indicators in water supplies correct answer: Total Coliforms, Fecal Coliform, Ecoli coliforms ___________________ can be used as good virus indicators in water supplies. correct answer: Coliphages Total coliform must be _______________________________ to meet the maximum contamination level. correct answer: 0/100ml in 95% of monthly samples if TC( total coliform) is positive you must samples for __________________________ correct answer: ecoli and fecal Ecoli and Fecal must be _______________________________ to meet the maximum contamination level(MCL). correct answer: 0/100ml
