AREA 2 Flashcards by Rhealene Cahigas

Associated with the movement of air masses from high-pressure to low pressure regions.
A. Frontal Precipitation
C. Orographic Precipitation
B. Non Frontal Precipitation
D. Cyclonic Precipitation

D. Cyclonic Precipitation

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Term used for solar radiation received at the earth’s surface.
A. Radiation C. Illuminance
B. Insolation D. Reflection

B. Insolation

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Change in phase from water vapor to ice.
A. Evaporation C. Sublimation
B. Condensation D. Adsorption

C. Sublimation

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e science and practice of water flow measurement is:
A. Hypsometry C. Hydro-meteorology
B. Fluvimetry D. Hydrometry

D. Hydrometry

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The lateral movement of water in the soil.
A. Infiltration C. Percolation
B. Seepage D. Flooding

B. Seepage

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The direct attraction of similar molecules between similar molecules.
A. Attraction C. Collision
B. Cohesion D. Repulsion

B. Cohesion

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Surface runoff plus interflow.
A. Groundwater Runoff C. Peak Flow
B. Base Flow D. Direct Runoff

D. Direct Runoff

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Geologic formation arranged in decreasing economic considerations.
A. Aquifer, Aquiclude, Aquitard, Aquifuge C. Aquifer, Aquiclude, Aquifuge, Aquitard
B. Aquifer, Aquifuge, Aquiclude, Aquitard D. Aquifer, Aquitard, Aquiclude, Aquifuge

D. Aquifer, Aquitard, Aquiclude, Aquifuge

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1 degree of equator of earth is equal to:
A. 10 minutes C. 7 minutes
B. 8 minutes D. 4 minutes

D. 4 minutes

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Water is supplied to level plots surrounded by dikes or levees. This method is particularly useful on fine-textured
soils with low permeability, it is necessary to hold the water on the surface to secure adequate penetration.
A. Contour-Ditch Irrigation
C. Sub-Irrigation
B. Level-Border Irrigation
D. Sprinkler Irrigation

B. Level-Border Irrigation

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The operation of leveling to determine the relative elevations of points some distance apart.
A. Profile Leveling
C. Differential Leveling
B. Topographic Leveling
D. Contour Leveling

C. differential levelling

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Volume of water stored in reservoir between the minimum water level and normal water level.
A. Storage Capacity C. Dead Storage
B. Active Storage D. Critical Storage

B. Active Storage

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Closed conduit designed to convey canal water in full and under pressure running condition, to convey canal water
by gravity under roadways, railways, drainage channels and local depressions.
A. Inverted Siphon C. Siphon
B. Elevated Flumes D. Weir

A. Inverted Siphon

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The most efficient trapezoidal cross-section.
A. Depth = twice the bottom width
C. Width of the top = twice the sum of sides
B. Width of the bottom = 4x the depth
D. Width of the bottom = twice the depth

D. Width of the bottom = twice the depth

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It is a gate placed across a stream from which it is desired to divert water.
A. Check gate C. Spillway
B. Head gate D. Weir

A. Check gat

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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. Drop C. Flume
B. Culvert D. Gate

B. Culvert

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The simplest form of open channel flow computation.
A. Unsteady Uniform Flow
C. Steady Uniform Flow
B. Steady Non-Uniform Flow
D. Unsteady Non-Uniform Flow

C. Steady Uniform Flow

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. Which of the following is the most economic type of drainage system?
A. Herringbone C. Double Main System
B. Gridiron D. Parallel Drain

B. Gridiron

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The ratio of water beneficially used on the project, farm or field to the amount of water delivered to the farm
expressed in percent.
A. Consumptive Use Efficiency
C. Water-Use Efficiency
B. Water Storage Efficiency
D. Water Application Efficiency

C. Water-Use Efficiency

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In-line structure with a geometrically specified constriction built in an open channel such that the center line
coincides with the center line of the channel in which the flow is to be measured.
A. Weir C. Orifice
B. Flume D. Drop

B. Flume

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. It is the most elaborate method of computing potential evapotranspiration:
A. Hargreaves C. Blaney-Criddle
B. Jensen-Haise D. FAO Penman-Monteith

D. FAO Penman-Monteit

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Removal of water from the road area by the use of culverts, ditches, channels and other several structures.
A. Roadway Embankment C. Irrigation
B. Crushed Gravel D. Drainage

D. Drainage

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The flow in a channel varied with respect to time.
A. Unsteady Flow C. Turbulent Flow
B. Laminar Flow D. Spatially Variable Flow

A. Unsteady Flow

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It is the sheet of water which overflows on a weir.
A. Nappe C. Overflow
B. Weir Flow D. Weir Discharge

A. Nappe

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5. For an 10m x 10m sprinkler spacing, what is the design sprinkler throw for a 50% overlap? A. 5 m C. 10 m B. 7.5 m D. 15 m

B. 7.5 m

A concrete lined canal is to convey water over a distance of 250 m from the well to a tomato farm. Drop in elevation is 0.5 m over the 250 m canal length and roughness coefficient, n, is 0.018. The bottom width of a rectangular canal with a depth of flowing water of 0.25 m if the hydraulic radius is equal to the area of flow. The velocity of water in the canal is: A. 0.062 m/s C. 6.2 m/s B. 0.62 m/s D. 62 m/s

B. 0.62 m/s

Twelve thousand five hundred cubic meters of water was delivered to a 10-ha farm for the month of June in which consumptive use is estimated at 8 mm/day. The effective rainfall for the period was 150 mm. What is the irrigation efficiency? A. 32% C. 72% B. 52% D. 87%

C. 72%

What is the discharge in each sprinkler nozzle to irrigate a rectangular piece of land 150m x 180m if the laterals are set parallel to the longer side of the field? Sprinkler spacing is 6m x 6m, irrigation water requirement is 150 mm and irrigation period is 6 hours. A. 0.125 lps C. 0.375 lps B. 0.250 lps D. 0.500 lps

B. 0.250 lps

What will be the maximum spacing for the rectangular pattern of sprinkler irrigation with an average wind speed of above 15 kph? A. 40% between sprinkler, 65% between lateral C. 30% between sprinkler, 50% between lateral B. 40% between sprinkler, 60% between lateral D. 40% between sprinkler, 50% between lateral

B. 40% between sprinkler, 60% between lateral

The most hydraulically efficient trapezoidal channel section to carry a discharge of 5m3 /s on a bed material with roughness n of 0.02 and a bottom slope of 1 in 800. What should be the bottom width of the canal? A. 4.65m C. 2.65m B. 3.65m D. 1.65m

D. 1.65m

What will be the maximum spacing for the square pattern of sprinkler irrigation with an average wind speed of 15 kph? A. 40% C. 50% B. 45% D. 55%

B. 45%

How many sprinklers with spacing of 7m x 7m are needed to irrigate a rectangular piece of land 125 m x 190 m if the laterals are set parallel to the longer side of the field? A. 485 C. 503 B. 486 D. 504

B. 486

A trapezoidal channel has a base width of 6 meters and a side slope of 1H:1V. The channel bottom slope is 0.0002 and the Manning roughness coefficient is 0.014. What is the depth of flow if Q = 12.1 m3/s? A. 1.1 m C. 1.5 m B. 1.3 m D. 1.7 m

C. 1.5 m

Maximum elevation the water surface which can be attained by the reservoir without flow in the spillway. A. Maximum Storage Elevation C. Critical Storage Elevation B. Normal Storage Elevation D. Active Storage

B. Normal Storage Elevation

Based on PAES 226:2017, the minimum depth of soil profile to be tested and analyzed for the design of Small Farm Reservoir is: A. 1m C. 1.5 m B. 2m D. 3m

C. 1.5 m

The removal of soil by water from small but well-defined channels or streamlets when there is a concentration of the overland flow. A. Gully Erosion C. Streambank Erosion B. Sheet Erosion D. Rill Erosion

C. Streambank Erosion

A type of terrace usually used for platforms. A. Broad-Based Terrace C. Bench Terrace B. Zingg Terrace D. Manning’s Terrace

C. Bench Terrace

Development of deep well by compressed air is best suited for ___wells. A. Small C. Close B. Big D. Open

A. Small

The other term for gravity well. A. Confined Well C. Deep Well B. Water Table Well D. Well On Perched Aquifer

A. Confined Well

The composite parts of the irrigation system that divert water from natural bodies of water such as rivers, streams, and lakes. A. Weir C. Flume B. Drop D. Headworks

D. Headworks

The soil characteristic determining the maximum rate at which water can enter the soil under specific conditions, including the presence of excess water. A. Infiltration C. Percolation Rate B. Infiltration Rate D. Capillarity

B. Infiltration Rate

The moisture content present in the soil when gravitational water has been removed. A. Available Moisture C. Field Capacity B. Permanent Wilting Point D. Saturation Point

C. Field Capacity

Agency that controls the re-use of wastewater. A. BSWM C. NIA B. DENR D. DA

B. DENR

A technique used to predict the changes in shape of hydrograph as water moves through a river channel or reservoir. A. Flow Measurement C. River Logging B. Channel Calibration D. Flood Routing

D. Flood Routing

The locus of the elevation to which water will rise in a piezometric tube. A. Energy Gradient C. Velocity Gradient B. Friction Gradient D. Hydraulic Gradient

D. Hydraulic Gradient

Type of stream that is also known as loosing stream. Water table in this case falls below the stream channel bed. A. Perennial Stream C. Influent Stream B. Gaining Stream D. Effluent Stream

C. Influent Stream

A principle of English Common Law which recognizes the right of riparian owner to make reasonable use of streamflow provided the water is used on riparian land. A. Presid’l Decree on Riparian Right C. Riparian Right B. Exec. Order on Riparian Right D. Riparian Act

C. Riparian Right

. A principle of English Common Law which recognizes the right of riparian owner to make reasonable use of streamflow provided the water is used on riparian land. A. Presid’l Decree on Riparian Right C. Riparian Right B. Exec. Order on Riparian Right D. Riparian Act

C. Riparian Right

It is the ratio of the dry weight of soil particles to the weight of an equal volume of water. A. Porosity C. Real Specific Gravity B. Void Ratio D. Apparent Specific Gravity

C. Real Specific Gravity

. A cylinder was pushed into the soil. The cross-sectional area of the cylinder was 0.025 m2 . The length of the soil column within the cylinder was 0.30 m. The weight of the soil within the cylinder was 9.5 kg when it was dried. The weight of the soil before drying was 11.4 kg. Determine the bulk density of the soil. A. 1.27 g/cc C. 1.47 g/cc B. 1.37 g/cc D. 1.57 g/cc

A. 1.27 g/cc

The pressure gauge measures the reading as 35 psi. Compute for the absolute pressure assuming standard atmospheric pressure. A. 49.7 psi C. 62.7 psi B. 50.7 psi D. 70.7 psi

A. 49.7 psi

. What is the present moisture content of a soil with 30% of its AM has been used of its FC is 25% and PWP is 20% by weight? A. 21% C. 23% B. 22% D. 24%

D. 24%

. What is the present moisture content of a soil with 25% of its AM has been used of its FC is 24% and PWP is 16% by weight? A. 21% C. 23% B. 22% D. 24%

B. 22%

. Water Body Classification and Usage of Marine Waters: This water is intended for the propagation and growth of fish and other aquatic resources and for commercial and sustenance fishing. It can even be classified as a marshy and/or mangrove areas declared as fish and wildlife sanctuaries. A. Class SA C. Class SC B. Class SB D. Class SD

C. Class SC

The scientific name of seaweed is: A. Kappaphycus C. Chanos chanos B. Aristichthys nobilis D. Oreochromis niloticus

A. Kappaphycus

The scientific name of bighead carp is: A. Kappaphycus C. Chanos chanos B. Aristichthys nobilis D. Oreochromis niloticus

B. Aristichthys nobilis

The chemical constituent of water which hastens growth of aquatic vegetation and sometimes lead to eutrophication. A. Sediment C. Potassium B. Phosphorus D. Sulfur

B. Phosphorus

The chemical constituent of water which hastens growth of aquatic vegetation and sometimes lead to eutrophication. A. Nauplius, megalopa, instar C. Nauplius, zoea, mysis B. Nauplius, mysis, zoea D. Zoea, megalopa, instar

C. Nauplius, zoea, mysis

. Occurs when excessive nutrients (e.g. NPK fertilizers in agricultural fields) are accumulated in different bodies of water that leads to algal blooms and fish kills. A. Nitrification C. Desertification B. Eutrophication D. Water degradation

B. Eutrophication

Breeding and growout production of commercially important marine species are grown in zonified marine cages which the Bureau of Fisheries and Aquatic Resources refers to as. A. Industrial cage parks C. Seawater cage farms B. Ocean cage parks D. Mariculture parks

D. Mariculture parks

A measure of the amount of oxygen that bacteria will consume while decomposing organic matter under aerobic conditions. A. BOD C. COD B. DO D. EC

A. BOD

What is the most abundant microorganism found in the soil? A. Protozoa C. Bacteria B. Molds D. Fungi

C. Bacteria

What nutrient deficiency if rice leaf are dark green? A. Nitrogen C. Phosphorus B. Potassium D. Calcium

B. Potassium

The ratio of the dry weight of the soil to the volume of the soil particles. A. Apparent Specific Gravity C. Real Specific Gravity B. Bulk Density D. Particle Density

B. Bulk Density

The molten mass where igneous rocks solidify from: A. Core C. Mantle B. Magma D. Soil

B. Magma

. Rocks that were formed from the partial melting of existing rocks due heat, pressure chemical action. A. Metamorphic rocks C. Igneous rocks B. Sedimentary rocks D. Volcanic rocks

A. Metamorphic rocks

An internal condition of a seed or bud that prevents its prompt germinating or sprouting under normal growth conditions. A. Dormancy C. Germination B. Diffusion D. Dominant

A. Dormancy

Which of these crops can be classified as an agronomic and horticultural crop based on their uses under Philippine condition? A. Rice C. Sorghum B. Okra D. Mungbean

D. Mungbean

The main path of (movement) inorganic substances in plants is: A. Roots C. Phloem B. Xylem D. Leaves

C. Phloem

This swine is known to be the “mother breed” among purebred hogs: A. Large white C. Landrace B. Doruc D. Pietrain

A. Large white

The milk produced in the first few days after parturition: A. Colostrum C. Fresh milk B. Filled milk D. Mastitis

A. Colostrum

Mature male horse for breeding: A. Stud horse C. Colt B. Cara-steer D. Stag

A. Stud horse

It describes the enormous variety of life on Earth: A. Ecological balance C. Stability B. Biodiversity D. Endemic

B. Biodiversity

Refers to the control of pest by living organisms under either natural or artificial environment: A. Biological contol C. Cultural control B. Behavior control D. Autocidal control

A. Biological contol

The layer of the atmosphere where most of the world's weather occurs. A. Troposphere C. Mesosphere B. Stratosphere D. Thermosphere

A. Troposphere

. The pressure of a confined gas at a constant temperature is tripled, what will happen to the volume? A. The volume is constant B. The volume will remain unchanged C. The volume will be tripled D. The volume will be reduced to one-third of its original value

D. The volume will be reduced to one-third of its original value

What is the sample standard deviation of the given data: 2, 8, -4, 10, 6, -17, and 15? A. 11.38 C. 10.28 B. 10.62 D. 9.83

B. 10.62

. What is the sample variance of the given data: 2, 8, -4, 10, 6, -17, and 15? A. 96.63 C. 112.78 B. 105.68 D. 129.50

C. 112.78

What is the probability of drawing queen of hearts on a deck of cards? A. 1/13 C. 1/52 B. 4/13 D. 4/52

C. 1/52

If the sphere is cut at its longest diameter, what will be the shape cross-section? A. Ellipse C. Arc B. Circle D. Cone

B. Circle

Find the slope of the line that passes through the points (-1,1) and (5,3). A. 3 C. 1/3 B. -3 D. -1/3

C. 1/3

Find the area bounded by the curves y = x 2 , y = 2 - x and y = 1. A. 16/3 sq. units C. 19/3 sq. units B. 16/9 sq. units D. 19/6 sq. units

D. 19/6 sq. units

Find the area of the region bounded by the graphs of y = x 2 + 2 and y = x, for 0 < x < 1. A. 1.50 sq. units C. 1.71 sq. units B. 1.57 sq. units D. 1.83 sq. units

D. 1.83 sq. units

When the equation x2 + 6x + 4y2 + 16y + 9 = 0 is set to standard form, the center of the ellipse is determined to be at: A. (-2, -3) C. (-3,-2) B. (2,3) D. (3,2)

C. (-3,-2)

Find the equation of the line passing through (6, -3) and (2, 0). A. 3x - 4y = 6 C. 4x - 3y = 6 B. 3x + 4y = 6 D. 4x + 3y = 6

B. 3x + 4y = 6

A cube has a surface area of 54 cm2 . What is the volume of the cube? A. 27 cm3 C. 12 cm3 B. 18 cm3 D. 9 cm3

A. 27 cm3

The point (3,4) lies on a circle whose center is at ( -1, 2) What is the length of the radius of the circle? A. 4.47 C. 5 B. 4.54 D. 20

A. 4.47

An iron block weighs 7 Newtons and has a volume of 200 cubic centimeters. What is the density the block? A. 3465 kg/m3 C. 1255 kg/m3 B. 3565 kg/m3 D. 2550 kg/m3

B. 3565 kg/m3

A vertical column of water will be supported to what height by standard atmospheric pressure? A. 24 ft C. 34 ft B. 26 ft D. 36 ft

C. 34 ft

A 10 kg block is raised vertically 3 meters. What is the change in potential energy? A. 320 J C. 294 J B. 350 km-m2/s2 D. 350 N-m

C. 294 J

The equivalent weight of mass 10 kg at a location where the acceleration of gravity is 9.77 m/s2. A. 97.7 N C. 77.9 N B. 79.7 N D. 977 N

A. 97.7 N

A population of bacteria grows according to the function f(x) = 100e 0.02t where t is measured in minutes. When will the population reach 50,000? A. 309 C. 313 B. 311 D. 315

B. 311

. Darwin takes twice as long as Bianca to complete a project. Together they can complete the project in 10 hours. How long would it take Darwin to complete the project alone? A. 30 hrs C. 20 hrs B. 25 hrs D. 15 hrs

A. 30 hrs

An inverted cone is 20 cm tall, has an opening radius of 8 cm, and was initially full of water. The water now drains from the cone at the constant rate of 15 cm3 per second. The water’s surface level falls as a result. At what rate is the water level falling when the water is halfway down the cone? A. -3.35 cm/s C. -2.95 cm/s B. 3.35 cm/s D. 2.95 cm/s

C. -2.95 cm/s

A designer of roller coaster decides to use a polynomial model for a new construction, and tries the polynomial model y = -0.0001(x3 – 100x2 ) where 0 ≤ 𝑥 ≤ 100 and y is the height reached. What is the highest point reached by the roller coaster? A. 66.67 C. 145.18 B. 115.48 D. 148.15

D. 148.15

The angle of elevation to the top C of a building from two points A and B on level ground are 50 degrees and 60 degrees respectively. The distance between points A and B is 30 meters. Points A, B and C are in the same vertical plane. Find the height of the building. A. 100 m C. 110 m B. 105 m D. 115 m

D. 115 m

By cutting away identical squares from each corner of a rectangular cardboard, and folding up the resulting flaps, the cardboard may be turned into an open box. If the cardboard is 16 inches long and 10 inches wide, determine the dimensions of the box that will yield the maximum volume. What is the greatest volume? A. 140 in3 C. 148 in3 B. 144 in3 D. 150 in3

B. 144 in3

At a distance 4,000 feet from the launch site, a spectator is observing a rocket being launched. If the rocket lifts off vertically and is rising at a speed of 600 feet per second when it is at an altitude of 3,000 feet, how fast is the distance between the rocket and the spectator changing at that instant? A. 300 ft/s C. 360 ft/s B. 350 ft/s D. 370 ft/s

C. 360 ft/s

One piston of a hydraulic press has an area of 1 cm2 . The other piston has an area of 25 cm2 . If a force of 150 N is applied on the smaller piston, what will be the total force on the larger piston if both piston surfaces are on the same level? A. 6 N C. 3750 N B. 175 N D. 4250 N

C. 3750 N

Suppose you work in a lab. You need a 15% acid solution for a certain test, but your supplier only ships a 10% solution and a 30% solution. Rather than pay the hefty surcharge to have the supplier make a 15% solution, you decide to mix 10% solution with 30% solution, to make your own 15% solution. You need 10 liters of the 15% acid solution. How many liters of 10% solution and 30% solution should you use? A. 7.5 liters of the 30% solution, 2.5 liters of the 10% solution B. 2.5 liters of the 30% solution, 7.5 liters of the 10% solution C. 7 liters of the 30% solution, 3 liters of the 10% solution D. 3 liters of the 30% solution, 7 liters of the 10% solution

B. 2.5 liters of the 30% solution, 7.5 liters of the 10% solution

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AREA 2 Flashcards

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