Earth Science chapter 12 Freshwater section 1 and 2
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| BOD | Biochemical Oxygen Demand
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| EPA | Enviromental Protection Agency is a branch of the federal govnerment charged with the responsibility of protecting H2O.
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| What is the name of the agency that is responsile for implementing the natural water quality standards in SC | SC Department of Health and Environment SCDHEC
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| concentration | the measure of one substance in a contain volume of another substance. Measure BOD, TSS, DO and Turbidity
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| The measure of how much oxygen is needed and used by organisms during decomposition | BOD- Biochemical Oxygen Demand
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| TSS | Total Suspended Solids
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| The amount of solid particles present in H2O | TSS -Total Suspended Solids
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| Drinking water comes from? | lakes, rivers, reservoirs and ground water (aquafors)
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| Water from public and private sources needs treatment to be safe for human consumption and appealing to drink (True or False) | True
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| A measurement of the substances in H2O besudes H20 modecules. | water quality
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| Some substances in H20 are harmless and tasteless, while others effect taste and color. Give an example | iron
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| Some substances in H20 can be harmful to human health. Give an example | Microrganisms
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| How is water quality measured? | PH, Hardness, conductivity and DCO
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| DCO | measurement of bacteria such as E Coli.
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| A measurement related to the amount of minerals or metals that are conductive in H20 | conductivity
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| measure of how acidic or bagie the H20 is measured ona scale of 0-14 | PH
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| O-=14 | O=acidic, - = neutral, 4=basic
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| Hardness | a measure of 2 minerals, calcium and magnesium in H20
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| The harder the levels of minerals in the water the harder to make soap later and bubbles True or False | True
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| The presence of mammal's waste in the water may contain diseases causing organisms. True or False | True
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| Cryptosporium | disease causing organisms this parasitic protist one sip can contaminte your water
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| Water treatment plants make H20 safe to drink True or False | True
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| What is the water treatment process? | Filtration, Coagulation, Chlorination
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| The process of removing salt from H20 | Desalination
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| A chemcial alum is added to the H20 to form sticky grolof called flocs. Then the water is filtered againg to remove the flocs | coagulation
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| Choloring is added to the H20 to kill diseases | Chlorination
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| Water is renewable True or False | True
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| When does water shortage occurs? | To little water and a great demand for water
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| A condition of scarce rainfall over a few years. | Drought
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| Drought effects both surface and ground water True or False | True
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| Using a resource wisely so that it is not used up (wise use) | conservation
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| Preservation | not using a resource at all so that it is not used up (no use)
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| Water convervations the 3 R's | Reduce, Reuse, Recycle
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| use less | Reduce
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| using a product over and over again | reuse
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| making new stuff with old stuff | recycle
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| One method of desaltination where H20 us boiled until it evaporates leaving any salt, or other undesirable maerials behind | distillatium
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| Icebergs | fresh water; a controversial source due to climate change
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