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ASM Test 3
Terms in this set (52)
What is the gov't agency that has set sound decibel limits in the workplace?
NIHL or OSHA
Unpleasant sounds represents a large % of hearing loss cases in the U.S.
The typical human hearing range is
20 - 20,000 Hz
"Threshold" of pain means a sound frequency has become painful
What is the name of the scale that measures sound pressure?
Explain the difference between irrigating sandy vs. clay soil
sandy soil does not pack together as well so it holds less water which may mean it needs more applied initially vs clay soil
Noises over ___________ dB can cause hearing loss
One physiological noise effect is?
reduced blood circulation
What is the cheapest, but least accurate way to measure distance?
Name the measuring device that uses a wheel to measure distance
how many pins are in a complete set of chaining pins?
how far apart are chaining pins located?
What is the device that can transfer horiztonal distance to the ground from a tape measure?
at 100 ft what should the stadia mark interval be?
T or F optical range finders are the most accurate you can use
T or F center pivot irrigators are the most common irrigation systems throughout the U.S.
T or F with the correct signals, GPS can be sub-inch accurate
Breaking chain, is a method used to measure?
distance on sloping land
The most common land description method used in eastern u.s.
metes and bounds
the most common land description used in the western us
the most common land use description method used in u.s. cities
block & lot
T or F a township is 36 section in size
T or F quadrangles are 24 miles on each side
Which direction do lines of latitude run?
east & west
Longitudinal lines are also called?
The closest meridian and baseline to ND is?
IL/WI & 5th principal
What is the only state not on the east coast choosing not to use the rectangular system?
T or F an initial point is set and the intersection of a principal meridian and a base line
When starting a legal land description in the rectangular system and a base line, we always start with the
T or F when setting up a bench mark, you would want to pick a location that is easy to return to
Define the term BS in surveying
back sight - measurement taken behind the bench mark
define the term FS in surveying
fore sight - measurement taken in front of the bench mark
T or F
we don't know the HI, we assign it a value of 5'7"
What is the largest uncontrolled variable in ag?
T or F high pressure moves clockwise and low pressure moves counter-clockwise
t or f storms start when pressure area leaves a region
If warm air overtakes cold air, what will the rainfall be like?
gentle over large area
an area drained by a common outlet is referred to as a _________________
How many major hydraulic subdivisions does ND have?
T or F most watersheds are considered "mixed"
What are the two phases of soil erosion
detachment & transport of particles
What are the 3 agents of erosions
wind, water, freeze
what are the 3 stages of wind erosion
suspension, saltation, & creep
What does the universal soil loss equation tell us? what is the measurement labled as?
annual percentage of soil loss inches lost per year. A=PRKLSC
T or F rain intensity and duration are factors in calculating water runoff
T or F slope has very little to do with wind erosion
3 of 7 things to help minimize soil erosion
vegetation, soil coverage, terrace land
what is the largest aquifer system in the us?
"Threshold of pain" means a sound frequency causes you to pass out
if irrigation took place, which soil would water move through faster? sand or soil
One physiological noise effect is
auditory ventricular shrinkage
In the universal soil loss equation, what is the measurement labeled as?
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