HIGHPRIO.4 Flashcards
Refers to the number of days between irrigation periods without rainfall.
a. irrigation frequency
b. irrigation efficiency
c. Irrigation method
d. irrigation period
a. irrigation frequency
It is type of erosion where small channels are formed on the surface of the soil
a.Splash
b.rill
c.sheet
d.gully
b.rill
One in which a definite law of certainty exists
a.Stochastic process
b.Probabilistic process
c.Deterministic process
d.Barrow process
c.Deterministic process
The other term for gravity well.
a. Confined well
b. Water table well
c. Deep well
d. Well on perched aquifer
c. Deep well
A storm type occuring at the boundaries of warm moist air and dry cold air.
a.Orographic storm
b.Frontal storm
c.Convective storm
d.None of the above
b.Frontal storm
The no. of days allowed for operating irrigation to a given design area during the peak consumptive period of the crop being irrigated.
a. irrigation method
b. irrigation period
c. irrigation frequency
d. irrigation efficiency
b. irrigation period
A property associated with surface tension of liquid and manifested in the rise and fall of liquids in small diameter tubes.
a. conduction
b. capillary
c. cavitation
d. condensation
b. capillary
Amount of rainfall in the rootzone.
a. consumptive use
b. seepage
c. percolation
d. effective rainfall
d. effective rainfall
A notch of regular form through which the irrigation stream is made to
flow and flow built as either portable or stationary structures is called:
a. orifice
b. parshall flume
c. weir
d. dam
c. weir
For the most efficient circular cross-section, semi-circle the hydraulic
radius is equal to:
a. ¼ its radius
b. its radius
c. ½ its radius
d. ¼ its diameter
d. ¼ its diameter
A hydraulic structure that serves as an outlet of water in irrigation canals whereby water passes through and discharges into the main farm ditch of service area is called
a. headgate
b. checkgate
c. turnout
d. offtake
c. turnout
The amount of water used in producing crop is:
a. water holding capacity
b. critical growth stage
c. rooting characteristics
d. percolation
a. water holding capacity
Water that moves freely and drains out of the soil is:
a. gravitational
b. capillary
c. S.I.A.
d. hygroscopic
a. gravitational
In drainage, open channel is often referred to as:
a. canals
b. traps
c. manholes
d. drains
a. canals
The direct attraction of similar molecules between similar molecules.
a. collision
b. attraction
c. repulsion
d. cohesion
d. cohesion
A temporary method of drainage artificially produced in the subsoil with digging a trench from the surface.
a. canal
b. flood routing
c. transition
d. mole drain
d. mole drain
The depth of water in mm or inches to be removed in 24 hr period from the drainage area.
a. infiltration rate
b. drainage coefficient
c. infiltration
d. percolation
b. drainage coefficient
Other terms for drip irrigation are __________ irrigation and __________ irrigation. This type of overhead irrigation operates at low pressure.
a. trickle – micro
b. sprinkle – slide
c. trickle – border
d. corrugation – trickle
a. trickle – micro
It is the average interval of time within the magnitude of given event will be equaled or exceeded at least once on the average.
a. period of exceedence
b. hydrologic frequency
c. return period
d. all of the above
c. return period
Ratio of the bulk density to the density of water.
a. oven-dry weight
b. apparent specific gravity
c. soil volume
d. porosity
b. apparent specific gravity
In open channel, the term A/P is:
a. hydraulic gradient
b. hydraulic radius
c. hydraulic conductivity
d. hydraulics
b. hydraulic radius
These are usually rural traders or barrio buyers who do accumulation of the produce of individual farmers and bulk these for storage or for distribution to wholesalers
a. assemblers
b. wholesalers
c. retailers
d. agents and brokers
a. assemblers
It is used to divide and distribute the flow of water at desired direction usually placed or built in main farm ditch to divert water to supplementary farm ditches.
a.spill wall
b.turnout
c.flume
d.division box
d.division box
In designing an open channel, it is necessary to know what the material
firming the channel bed is to know the value of:
a. roughness coefficient
b. side slope
c. bed slope
d. bottom slope
a. roughness coefficient
This refers to wants for specific satisfiers backed up by an ability and willingness to buy them.
a. need
b. want
c. demand
d. value
c. demand
An irrigation method formed by building longitudinal levees approximately parallel to the contour and connecting them at a desirable places with levees
at right angle.
a. check contour
b. border
c. basin
d. furrow
a. check contour
A device used to control the flow of water to or from a pipeline.
a. Inlet
b. gate
c. weir
d. flume
b. gate
A closed conduit usually circular, square or rectangular in cross section, used for conveying water across and under an elevated roadway, embankment and dikes.
a. gate
b.culvert
c.canal
d.drop
b.culvert
This is a marketing function which facilitates transfer of ownership
a. assembly
b. storage
c. negotiation
d. grading
c. negotiation
It also refers to consumptive use by crops.
a. evapotranspiration
b. water circulation
c. saturation vapor pressure
d. osmosis
a. evapotranspiration
It is natural or artificial channel that shortens a meandering stream.
a. cut off
b. drawdown
c. chutes
d. transition
a. cut off
A concept used to evaluate the losses of water during irrigation from the time it leaves that source to the point of use.
a.irrigation efficiency
b. drainage efficiency
c.Discharge flow rate
d. nota
a.irrigation efficiency
This is oftentimes not considered a marketing activity, but it is a marketing function. This is because agricultural products must pass through some levels of transformation before being made available to the users. This marketing function increases marketability of products by changing product forms.
a. packaging/packing
b. grading
c. storage
d. processing
d. processing
The most simple form of open channel flow computation is:
a. unsteady uniform flow
b. steady non-uniform flow
c. steady uniform
d. unsteady non-uniform
c. steady uniform
These are intermediaries who deal directly with the end-users or the
consumers. They are the wholesalers’ partners in distribution activities.
a. agents
b. retailers
c. assemblers
d. brokers
b. retailers
The speed at which water flows in channel is:
a. velocity
b. discharge
c. runoff
d. volumetric flow
a. velocity
It is equal to the cross-sectional area times the velocity of flow.
a. velocity
b. discharge
c. evaporation
d. runoff
b. discharge
Water that moves freely and drains out of the soil is:
a. hygroscopic water
b. capillary water
c. gravitational water
d. sea water
c. gravitational water
It is the state of felt deprivation of some basic satisfaction
a. need
b. want
c. demand
d. exchange
a. need
It is the most elaborate method of computing potential
evapotranspiration:
a. Blaney-Criddle
b. Jensen-Haise
c. Hargreaves
d. Penman
d. Penman
Methods of supplying water in the basin
a. direct supply and cascade supply
b. flooding and pumping
c. sprinkling and dripping
d. wild flooding and pressurized supply
a. direct supply and cascade supply
It is anything offered for sale, attention, and acquisition
a. prospect
b. target market
c. product
d. market segment
c. product
Which is not part of the macro-environment?
a. demographic
b. suppliers of raw materials
c. technological
d. politico-legal
b. suppliers of raw materials
Same as interflow
a.Surface runoff
b.Subsurface runoff
c.Groundwater runoff
d.Runoff volume
b.Subsurface runoff
It is the ratio of the dry weight of the soil to the weight of the water
with volume equal to the soil bulk volume.
a. particle density
b. real specific gravity
c. bulk density
d.apparent specific gravity
d.apparent specific gravity
It accounts for the losses in an irrigation system from the water source
and prior to delivery of water into the field ditches.
a. evaporation
c. diversion efficiency
b. application efficiency
d. conveyance efficiency
d. conveyance efficiency
A geologic formation that contains water but do not have the capacity to
transmit it.
a. aquifuge c. aquitard
b. aquifer d. aquiclude
d. aquiclude
Farm water requirement minus the application losses is the_______.
a. diversion water requirement
b. farm irrigation requirement
c. application efficiency
d. land preparation water requirement
b. farm irrigation requirement
This results from overlapping radii of influence of neighboring wells.
a. drawdown
c. well interference
b. groundwater decline
d. drawdown curve
c. well interference
In furrow irrigation, the rate of water application should be __________
the intake rate of the soil.
a. less than c. equal to
b. greater than d. not related to
a. less than
Irrigation method used fore row crops wherein only a part of the surface
is wetted.
a. basin flooding
c. border irrigation
b. furrow irrigation
d. border-strip flooding
b. furrow irrigation
The amount of drainage water to be removed per unit time per unit area is
the____.
a. drainage requirement
c. drain spacing
b. drainage coefficient
d. drainage volume
b. drainage coefficient
In Hooghoudt’s drain spacing formula it is assumed that _____.
a. The water table is in equilibrium w/ the rainfall or irrigation water.
b. The drains are evenly spaced.
c. Darcy’s law is valid for flow through the soils.
d. All of the above.
d. All of the above.
.______ is a mathematical expression for the macroscopic flow of water
through a porous system.
a. Steady state groundwater flow equation
b. Darcy’s Law
c. Laplace Equation
d. Scobey’s Equation
b. Darcy’s Law
It is the soil moisture constant describing the amount of moisture retained
by the soil against a suction pressure of 1/3 atmosphere.
a. field capacity
c. permanent wilting point
b. hygroscopic moisture
d. saturation point
a. field capacity
The infiltration equation based on the exhaustion process is the _____.
a. Lewis-Kostiakov’s c. Philip’s
b. Horton’s d. Darcy’s
b. Horton’s
Run-off is the difference between the gross depth of irrigation water and
the____.
a.net depth requirement
b.depth that infiltrated
c.crop evapotranspiration
d.water use rate
b.depth that infiltrated
It is the type of sprinkler irrigation system where the number of laterals
installed is equal to the total number of lateral positions.
a. hand move system c. special type
b. periodic move d. set system
d. set system
In a drip system, the allowable pressure variation in a lateral with
minimum and average head of 1.51 and 1.38 mters respectively is _____.
a. 0.185 psi c. 0.370 psi
b. 0.462 psi d. 0.130 psi
b. 0.462 psi
Computer aided method wherein it averages estimated precipitation at all points of a superimposed grid.
a.Inverse Distance Ratio Method
b.Grid-Point Method
c.Isohyetal
d.Thiessen polygon
b.Grid-Point Method
Natural drainage occurs when the soil water reaches or exceeds a depth of
_____.
a. 43.2 mm c. 288 mm
b. 270 mm d. 360mm
d. 360mm
It is a surface irrigation system where the area is subdivided by dikes
and water flows over these dikes from one subdivision to another.
a. border irrigation
c. basin irrigation
b. furrow irrigation
d. corrugation irrigation
c. basin irrigation
Distribution control structures placed across an irrigation ditch to block
the flow temporarily and to raise the upstream water level.
a. turnouts
b. checks
c. culverts
d. weirs
b. checks
Which is not a component of the impact arm of an impact sprinkler?
a. nozzle
b. counterweight
c. vane
d. spoon
a. nozzle
Used when there is skewness in the data distribution
a. Gamma Density Function
b. Pearson Type III Distribution
c. Log-Normal Distribution
d. Normal Distribution
c. Log-Normal Distribution
Governed by chance; time series INDEPENDENT
a. Stochastic process
b. Probabilistic process
c. Deterministic process
d. Barrow process
b. Probabilistic process
Station locations and amounts of rainfall are plotted on a suitable map,
and contours of equal precipitation (isohyets) are then drawn.
a. Inverse Distance Ratio Method
b. Grid-Point Method
c. Isohyetal
d. Thiessen polygon
c. Isohyetal
This method can be used if there is a piped water-distribution system where a hose pipe can be connected to a tap or outlet and there is enough pressure
in the water as it emerges from the hose pipe
a. Hose pipe
b. Watering can
c. Drainage
d. Overhead irrigation
a. Hose pipe
In surface irrigation, the ratio between the gross amount of irrigation water and the net requirement of the crop is the _____
a. application efficiency
b. deep percolation
c. seepage
d. runoff
a. application efficiency
It is an orderly sequence of planting crop in an area for a 365-day period.
a. cropping pattern
b. crop combination
c. crop sequence
d.cropping schedule
a. cropping pattern
In the furrow irrigation, it is the difference between the depth of water
that infiltrated and the net depth requirement is the
a. runoff
b. application losses
c. deep percolation
d. seepage
c. deep percolation
