What is a measure of how close repeated trials are to the desired target.
100
Distilled water
What is water that has had most of its impurities removed.
100
Glide/run
What is – section of a stream with a relatively high velocity and with little or no
turbulence on the surface of the water.
100
Macroinvertebrate
What is organisms that lack a backbone and can be seen with the naked
eye.
100
Taxon (plural taxa) –
What is a level of classification within a scientific system that categorizes
living organisms based on their physical characteristics.
200
Acidity
What is a measure of the number of free hydrogen ions (H+) in a solution that can
200
Dredge
What is to remove sediments from the stream bed to deepen or widen the channel.
200
Fish kill –
What is the sudden death of fish due to the introduction of pollutants or the reduction
of dissolved oxygen concentration in a water body.
200
Nonpoint source pollution –
What is – pollution that cannot be traced to a specific point, but rather
from many individual places (e.g., urban and agricultural runoff).
200
Tolerance
What is the ability to withstand a particular condition, e.g., pollution-tolerant
indicates the ability to live in polluted waters.
300
Algal bloom
What is a heavy growth of algae in and on a body of water as a result of high
300
Emergent plants
What is – plants rooted underwater, but with their tops extending above the water
300
Flow
What is – the direction of movement of a stream or river.
300
Nutrient
What is substance which is necessary for growth of all living things (i.e. phosphorous,
nitrogen and carbon).
300
Water cycle
What is – the cycle of the earth's water supply from the atmosphere to the earth and
back which includes precipitation, transpiration, evaporation, runoff, infiltration, and
storage in water bodies and groundwater.
400
Benthic
What is – pertaining to the bottom (bed) of a water body.
400
Floating plants
What is – plants that grow free-floating, rather than being attached to the stream bed
400
Floodplain
What is – a low area of land surrounding streams or rivers which holds the overflow
of water during a flood.
400
Orthophosphate
What is inorganic phosphorus dissolved in water.
400
Watershed
What is – land area from which water drains to a particular water body.
500
Channel
What is - the section of the stream that contains the main flow.
500
Flocculent (floc)
What is – a mass of particles that form into a clump as a result of a chemical
reaction.
500
Groundwater
What is – a supply of fresh water under the earth's surface which forms a natural
reservoir.
500
Sedimentation
What is when soil particles (sediment) settle to the bottom of a waterway.
500
Wetland
What is an area of land that is regularly wet or flooded, such as a marsh or swamp.