Chapter 8 Flashcards
1
Q
Igneous rock
A
- formed by the cooling and crystallization of molten rock
- water does not percolate through
- ex. granite
2
Q
sedimentary rock
A
- formed by weathered rock debris and ocean organism remains
- water percolates easily
- ex. sandstone, limestone, shale
3
Q
metamorphic rock
A
- formed when sediments are compressed and heated, melted
- quartz, marble…
4
Q
oxygen, temperature relationship
A
cold water, more oxygen
5
Q
pH and water temperature
A
pH decreases as temperature increases. pure h2o has a pH of 7 at 25* C
6
Q
impervious surfaces
A
Increases the velocity and volume of polluted runoff, and prevents infiltration and ground water recharge
7
Q
runoff and siltation problems
A
- interferes with respiration
- restricts habitat
- burial
- clogs gravel, causing low oxygen
- increase scour
8
Q
alkalinity
A
acid neutralizing capacity. The ability of water to absorb hydrogen ions without changing the pH
9
Q
hardness
A
measure of the amount of calcium and magnesium in the system
10
Q
total dissolved solids
A
TDS. The major ions presents. The more ions present, the greater the conductivity.
Conductance=voltage/resistance
11
Q
conductance
A
measure of major ions present, how much current flows through 1 cm
