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Lakes, ponds & streams (Water Exploration) Bonus: Water Resource

Terms in this set (22)

True or False. In terms of water quality, dissolved oxygen means the amount of oxygen in the water.
True
Water bodies receive oxygen from the (fill in the blank) and from aquatic plants.
a. atmosphere
b. trapped carbon bubbles
c. unprocessed air in the sediment
atmosphere
True or False. Hypoxia indicates low levels of oxygen in water.
True
True or False. Anoxia indicates no oxygen in the water.
True
A low dissolved oxygen level means that aquatic animals can possibly leave the area or (fill in the blank).

a. become sick
b. search for oxygen in the sediment
become sick
Measuring these two parameters is important to understand dissolved oxygen results.
a. pH and turbidity
b. turbidity and temperature
c. pH and temperature
pH and temperature
What unit is dissolved oxygen measured in?
a. mg/L ( milligrams per liter)
b. ppm ( parts per million)
c. NTU (Nephelometric Turbidity Units )
mg/L ( milligrams per liter)
True or False. In terms of water quality, pH indicates how acidic or alkaline a substance is.
True
The pH scale ranges from (fill in the blank) to ( fill in the blank) .
a. 1 to 10
b. 0 to 14
c. 1 to 14
0 to 14
pH that is less than 7 is
a. acidic
b. alkaline
c. neutral
acidic
pH that is more than 7 is
a. acidic
b. alkaline
c. neutral
alkaline
pH that is 7
a. acidic
b. alkaline
c. neutral
neutral
H2O is composed of (fill in the blank) and (fill in the blank) atoms.
a. hydrogen and osmium
b. helium and oxygen
c. hydrogen and oxygen
hydrogen and oxygen
(fill in the blank) water contains equal amounts of hydrogen ions (H+) & hydroxide ions (OH-) and is given a pH value of 7.0

a. acidic
b. alkaline
c. neutral
neutral
(fill in the blank) water contains more hydrogen ions (H+) than hydroxide ions (OH-). ph value is less than 7.

a. acidic
b. alkaline
c. neutral
acidic
(fill in the blank) water contains more hydroxide ions (OH-) than hydrogen ions (H+). ph value is more than 7.

a. acidic
b. alkaline
c. neutral
alkaline
What unit is pH commonly measured in?

a. mg/L ( milligrams per liter)
b. ppm ( parts per million)
c. no unit, log function
no unit, log function
In terms of water quality, what does turbidity mean?
the measure of relative clarity of a liquid
True or False. Turbidity readings can be used as an indicator of potential pollution in a water body.
True
True or False. Low turbidity means that there are a lot of particles suspended in the water and light cannot get through.
False
( fill in the blank ) turbidity means that there are fewer particles in the water and it is more clear.

a. low
b. alkaline
c. high
low
What unit is turbidity commonly measured in when visually analyzing the clarity of water? Bonus: What is the full term of the abbreviated unit.

a. JTU
b. LTU
c. TTU
JTU
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