PART 2: AQUA

Question 1

rearing and breeding of aquatic organisms on confined condition which is more or less controllable by am

Answer 1

aquaculture

Question 2

uses freshwater supplied by spring, stream or river, rain, deep well or lake

Answer 2

freshwater aqua

Question 3

uses combination of freshwater and seawater and is usually located in the mangrove areas where the river flows and mixes with the tidal water

Answer 3

brackishwatter

Question 4

usually located in protected coastal areas and uses only seawater

Answer 4

mariculture

Question 5

period of rising and falling of the water surface of the oceans, seas, bays, mouth of rivers, etc.

Answer 5

tidal phenomenon

Question 6

published by the government by the bureau of coast and geodetic survey, this contains the compilation of tables of predicted time and height of high and low waters each day of the year

Answer 6

tide table

Question 7

prediction for the specific area using the tidal differences and constants of the tide table

Answer 7

actual tide gauging

Question 8

normal length of a step or stride of an individuak

Answer 8

pace

Question 9

defined as the ratio of the measure distance and the number of paces made by an individual to cover the measured distance

Answer 9

pace factor

Question 10

the angle that is referred from the north and south

Answer 10

bearing

Question 11

a clockwise angle measured from a reference direction, usually north

Answer 11

azimuth

Question 12

boundaries of the farm are plotted to scale and area is determined by planimeter

Answer 12

planimeter method

Question 13

area is calculated from the coordinates of the farm

Answer 13

double-meridian distance method

Question 14

are conducted on the farm site to detrrmine the nature of the ground relief of its characteristics

Answer 14

topographic surveys

Question 15

provides the basic horizontal and vertical control in the planning and design of the fishpond

Answer 15

topographic map

Question 16

is a complex of establishments consisting of ponds of various kinds, water control structures and supporting facilities

Answer 16

fish farm

Question 17

is a section of fairly shallow water, used for the controlled farming of fish and other aquatic organisms and laid out in such a way that it may be easily and completely drained

Answer 17

pond

Question 18

all the water course crosses the pond

Answer 18

barrage or terrace pond

Question 19

only a part of the water course crosses the pond

Answer 19

diversion pond

Question 20

the allowd water flow crosses all the ponds

Answer 20

linked ponds

Question 21

each pond has its own individual water supply and outlet

Answer 21

parallel ponds

Question 22

about 2 ft. (0.5-0.7m) deep; series of small ponds

Answer 22

nursery ponds

Question 23

0.75-1.25 m depth;

Answer 23

rearing pond

Question 24

is the arrangement of all the fish farm facilities and structures in a proposed site based on the physcial features of the area

Answer 24

effective farm layout

Question 25

serves as the foundation of the structure and its elevation for main gates must be lower than the pond elevation

Answer 25

floor

Question 26

broadened and extended part of the floor and also generally rests on the foundation piles 0.3

Answer 26

apron

Question 27

are provided at both ends of the fate floor to prevent seepage and undercutting of water within the gate's foundation 0.6m

Answer 27

cut-off walls

Question 28

define the waterway in addition to their being retaining walls

Answer 28

side or breast walls

Question 29

this is built against the side walls to support or reinforce it

Answer 29

buttress

Question 30

provide the transition from the waterway into the main canal in addition to retaining the earth at both sides of the gate

Answer 30

wing walls

Question 31

these are reinforce concrete slabs or thick wooden planks that connect the isde walls

Answer 31

bridges or catwalks

Question 32

are generally wooden planks, 2.5-5 cm thick and 30 cm wide inserted into grooves

Answer 32

flashboards

Question 33

usually made of bamboo strips or fine polyethylene meshes attached to a wooden rectangular frme that fit into the grooves

Answer 33

screens

Question 34

these are vertical supports where wooden walls are nailed

Answer 34

pillars

Question 35

these wooden members are held or fasten two or more pillars together in a place

Answer 35

braces

Question 36

appropriate side slope of dike

Answer 36

1:1

Question 37

starts from the main gate and usually traverses the central portion of the fish farm

Answer 37

main water supply canal

Question 38

serves the portions where main canal cannot reach. it starts from the main canal and traverses the inner portion of the fishpond

Answer 38

secondary water supply canal

Question 39

this is the canal that usually supplies water in the nursery and transition ponds

Answer 39

tertiary canal

Question 40

the purpose of this canal is to protect the farm from being flooded with runoff water coming from the watershed

Answer 40

diversion canal

Question 41

application of basic engineering principles and procedures to the design and construction of structures and systems for aquaculture

Answer 41

aquaculture engineering

Question 42

the first and most important consideration in the suitability of a shrimp farm

Answer 42

water

Question 43

a good water quality for shrimp pond should have a salinity of ____; pH range from _____; and a minimum level of DO of ___

Answer 43

10-25 ppt 7-8.5 5 ppm

Question 44

configuration of the land surface

Answer 44

land topography

Question 45

enclose the entire facility and render overall protection to the cultured stock as well as other related structures

Answer 45

perimeter dikes

Question 46

define the size and limits of each grow out compartment

Answer 46

secondary or partition dikes

Question 47

second most significant significant structure in an aquaculture farm; regulates water ingress and egress and are responsible for maintaining desired pond water depth

Answer 47

gates

Question 48

gates located on the perimeter dike

Answer 48

main gates

Question 49

gates located in the partition dikes amd are used to regulate water level in the pond compartments

Answer 49

secondary gates

Question 50

open channels constructed on top of the dike equipped with gates to regulate flow of water into the various compartments in the farm

Answer 50

flumes

Question 51

a critical process for intensive aquaculture systems, is the addition of oxygen or air-containing oxygen to water

Answer 51

aeration

Question 52

take advantage of the energy released when water losses altitude to improve the air-water surface area

Answer 52

gravity aerators

Question 53

are devices that break-up or agitate the water surface to attain large oxygen transfer rates

Answer 53

surface aerators

Question 54

are devices that inject air oxygen into a body of water in the form of bubbles

Answer 54

diffuser aerators

Question 55

consist of a propeller submerged in the liquid to be aerated

Answer 55

turbine aerators

Question 56

the main canal starts from the main gate and traverses the central portion of the fishfarm

Answer 56

main canal

Question 57

constructed in parts of the fishpond not reached by the main canal; bed width of 2 m

Answer 57

secondary supply canal