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Science homework
Ewen 6th period class
Question | Answer |
---|---|
irrigation | process of supplying water to areas to make suitable for growing crops |
conservation | practice of using less of a resource so that it will not be used up |
desalination | obtaining fresh water from salt water |
water quality | measurement of the substances in water besides water molecules |
concentration | the amount of one substance in a certain volume of another substance |
pH | measurement of how acidic or basic the water is on a scale of 0-14 |
hardness | combined level of two minerals- calcium and magnesium- in a sample of water |
filtration | process of passing water through a series of screens that allows water through, but not larger solid particles |
coagulation | the other particles that stick to the flocs |
sewage | water containing human wastes |
water pollution | addition of any substance that has a negative effect on water or the living thing that depend on water |
pollutant | substances that cause water pollution |
point source | specific source pollution that can be identified |
non-point source | widely spread source of pollution that can't be tied to a specific point of origin |
pesticide | chemicals intended to kill insects and other organisms that damage crops |
acid rain | rain or another form of precipitation that is more acidic than normal |
drought | a long period of scarce rainfall |
flash flood | sudden and violent flood that occurs within a few hours, or even minutes, of a storm |
levee | long ridge formed by deposits of sediments alongside a river channel |