1.Volume is best thought of as a...........
a) derived unit
b) base unit
c) base measurement
d) derived unit
2) The standard unit for length in SI is
a) meter
b) kilometer
c) centimeter
d) parsec
e) mile
3) The best method for measuring quantities of water which are used in towns,
homes and labs is
a) time
b) volume
c) mass
d) pressure
e) length
4) Which of these is an advantage of the SI measurements and units
a) it uses common US measurements and units
b) it is easy to convert because it uses factors of 10 in units
c) the units are more accurate than ordinary units
d) the units always use whole numbers
e) none of these
5) The SI system derives units of volume by starting with units of
a) length
b) mass
c) pressure
d) energy
e) moles
6) In dimensional analysis the terms "what you are looking for", "conversion
factor" and "what's given" are used. Let the conversion factor = c; what
you are looking for = w and what's given = g. Which equation solves a dimensional
analysis problem ?
a) g/1 x c = w
b) g/c = w
c) c/1 x w = g
d) w/1 x g = c
7-9) Match these units with the volume they would be best suited to express
7) the volume of water in a test tube a) liters
8) the volume of water used in a town in a week b) milliliters
9) the volume of water used in taking a bath c) cubic meters
10) After water is distilled it
a) pure and conducts electricity
b) pure and doesn't conduct
c) still impure and conducts
d) still impure and doesn't conduct
11) Polluted water which has been treated like the foul water in our lab
be free of...
a) odor
b) color
c) visible particles
d) oil
e) all of these
12) Riverwoods is a town of 4000 people. The water is shut off for three
days. Use the average amount of direct water use(per person per day) to find
how much water the town would require for these three days
a.) 12000 liters
b) 1.3 million liters
c.) 2.6 million liters
d.) 3.9 million liters
13) The development of large cities in the 1800's led to the contamination
of water supplies by
a) industrial pollution
b) agricultural run-off
c) sewage
d) airborne pollution
e) dissolved substances
14) The total amount of water available to people thru rain fall is adequate
but it is often not distributed where it is needed.
a) true
b) false
15) Which of these is an example of indirect water use
a) water used for cooking
b) water used to wash a car
c) water used to water flowers at home
d) water used to drink
e) water used to produce electricity.
16) Which statement is true about indirect and direct water use
a) About 50% of a persons water use is direct and 50% is indirect
b) Direct water use is far greater than indirect
c) Indirect water use is far greater than direct
17) In the western US certain city areas experience water shortages from
time to time. Which of these facts does not help create the
shortages?
a) the west often receives low amounts of rainfall
b) the mountains of the west have large amounts of snow which isn't
useful for use
c) the warm climate of the west causes large amount of evaporation and
smaller(48%) amounts of water return to rivers
d) farmers in the west remove large amounts of water to irrigate crops
18) Which of these pairs of words have definitions that are most
alike
a) groundwater;aquifer
b) hydrological cycle; run off
c) surface water;evaporation
d) evaporation; runoff
e) rainfall; evaporation
19) Charcoal in water treatment works by adsorption. Pick out the true
fact.
a) adsorption neutralizes harmful substances like acids
b) in adsorption clay is removed after the forming of floc
c) in adsorption dissolved substances like salt are removed
d) in adsorption substances are attracted and stick to charcoal
20) The substances dissolved in water supplies can be removed by water treatment
plants a) true b) false
21) Which list correctly describes where there greatest-to-least amounts
of the earth's water is stored
a) oceans, lakes, groundwater, glaciers and icecaps
b) oceans, glaciers and icecaps, lakes, groundwater
c) oceans, glaciers and icecaps, groundwater, lakes
d) oceans, groundwater, lakes, glaciers and icecaps
e) oceans, lakes, glaciers and icecaps, groundwater
22) Water which has no definite shape but a definite volume is called
a) solid
b) liquid
c) gas
23) There is ______________ amount of water on earth today than a billion
years ago because ____________________
a) a less; human pollution
b) the same; water is always recycled
c) a greater; water is always made in the atmosphere
24) _________________ describes process of water falling as rain, passing
thru the envirnment and evaporating to the atmosphere
a) Aquifer
b) Condensation
c) Watershed
d) Hydrological cycle
25) Which are examples of pure water
a) tap water
b) water after it has been treated at a treatment plant
c) distilled water
d) water from a spring
e) none of these ESSAYS Name_____________________________
SENTENCES MUST BE USED IN ALL WRITTEN QUESTIONS
WORK MUST BE SHOWN IN MATH CALCULATIONS
UNITS MUST BE USED WITH NUMBERS
1) The water crisis in Riverwood had many effects on the city(school closed,
fishing tournament called off, etc) Each community would be effected
differently by such a problem. Describe TWO problems that the
communities in our area would have if the water was shut off for 3 days.
Don't use any problem mentioned for
Riverwood.(
SENTENCES)
2) Use correct dimensional analysis techniques and the facts below to solve these problem.
a) How many gallons are there in .025 m3? Show work using dimensional analysis
include all units
b) How many quarts are there in 3.5 x 1012 liters
Show work using dimensional analysis include all units
c) How many gallons is 3250 ml of water?
Show work using dimensional analysis include all units
d)
How many drops of water must fall to supply the average American with their
daily supply of water(direct usage only)?
Show work using dimensional analysis include all units
3) A water sample has been PARTIALLY treated by a student
using the equipment that we used in our foul water lab
Here is a description of the water after some cleaning:
Color - light green
Odor - none
Solids -none
Oil and floating debris -none
Conductivity- conducts electricity
READ ALL QUESTION BEFORE ANSWERING (a-c)
a.Which of the 3 major steps of water lab has been done to the
water
of the following terms in your cycle: run-off, ground water,
water treatment plant, transpiration and evaporation
5) Tinley Park receives water from Lake Michigan. Describe the major steps
that water takes on it journey to your home and after it
leaves( SENTENCES)
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Real water treatment has 5 steps(2 more than our lab). List all 5 in order
and tell what each removes. What is not removed from Lake Michigan water?
( SENTENCES)
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Questions? Comments?
Jack O'Donnell