15.2 Review - Water Question Preview (ID: 13765)


CPO Earth Science Water Resources. TEACHERS: click here for quick copy question ID numbers.

Pure water is water that contains:
a) calcium
b) magnesium
c) potassium
d) no dissolved minerals

The source of salt in Earth's oceans is:
a) dissolved minerals in teh oceans' crust.
b) underwater volcanoes.
c) weathered salt from rocks on Earth's surface.
d) All of the above.

The range of pH for most surface water is from
a) 2.0 - 4.0
b) 4.5 - 6.5
c) 6.5 - 8.5
d) 9.0 - 11.0

This element is present in older pipes and pipe solder, and if dissolved in water is toxic at very low concentrations.
a) Chlorine
b) Lead
c) Nitrogen
d) Phosphorous

These chemicals can get into water from fertilizer, septic systems, and farm runoff. They contribute to the growth of algae.
a) chlorine and flourine
b) lead and copper
c) phosphates and nitrates
d) iron and copper

Hard water is water that contains:
a) flourine
b) caron dioxide
c) chlorine
d) calcium and magnesium

List two chemicals that water treatment facilities add to drinking water.
a) chlorine and flouride
b) calcium and chlorine
c) flouride and iron
d) flouride and potassium

The government agency that sets the standards for clean water is the
a) FDA
b) COA
c) IRS
d) APS

A mineral dissolved in water may exist as a charged element or moelecule called a(n)
a) solution
b) leaching
c) percipitate
d) ion

What does the turbidity test measure?
a) cloudiness of water
b) the amount of oxygen dissolved in teh water
c) the number of phosphates
d) the pH (acidity of the water)

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