A) Water extraction B) Flood prevention C) Erosion control D) Sediment collection
A) Distance from vegetation B) Proximity to underground water flow C) Soil color D) Elevation of the riverbed
A) Gravel and sand B) Loam C) Silt D) Clay
A) 2 meters B) 0.3 meter C) 0.5 meter D) 1 meter
A) 0.3 meters B) 1.5 meters C) 0.5 meter D) 1 meter
A) Clay B) Plastic C) Gravel D) Cement
A) To filter water B) To retain moisture C) To prevent collapse D) To add weight
A) Clay layer B) Coarse gravel C) Bare earth D) Fine sand
A) Support the walls B) Facilitate water infiltration C) Prevent water from escaping D) Attract minerals
A) Cover with a permeable material B) Cover with plastic C) Fill with soil D) Leave open to the air
A) To attract rain B) To increase evaporation C) To keep animals out D) To prevent contamination
A) Regularly, especially after heavy rain B) Annually C) Only when it stops producing water D) Never
A) Animal burrowing B) Sediment buildup C) Sunlight exposure D) Excessive water extraction
A) Regular cleaning and maintenance B) Ignoring it C) Using chemicals D) Adding more gravel
A) Shovel B) Screwdriver C) Measuring tape D) Level
A) Dig alone B) Wear gloves and eye protection C) Ignore potential hazards D) Work barefoot
A) Filter chemicals B) Cool the water C) Prevent sediment from entering the pump D) Increase water pressure
A) Local regulations B) Water demand and riverbed flow C) Size of the riverbed D) Number of people using the water
A) It reduces evaporation B) It creates surface water storage C) It increases rainfall D) It captures and utilizes subsurface flow
A) Groundwater contamination B) Improved soil fertility C) Reduced erosion D) Increased rainfall
A) Vegetation nearby B) Damp soil a few feet down C) Standing water on the surface D) Evidence of past water flow
A) During a flood B) During the dry season C) Any time of year D) During the rainy season
A) To add pressure to the water flow B) To gather water from the surrounding gravel C) To measure the water level D) To release excess water
A) Lower yield in some cases B) Higher cost C) Requires electricity D) More complex construction
A) Hand pump B) Centrifugal pump C) Submersible pump D) Windmill pump
A) Boiling the water B) Water filtration and purification C) Ignoring water quality D) Adding chlorine
A) Ignoring sediment buildup B) Using substandard materials C) Over-extraction of water D) Regular maintenance and cleaning
A) Volcanic eruptions B) Extremely cold temperatures C) Flash floods D) Wild animals
A) Provides shade B) Attracts wildlife C) Indicates soil quality D) Indicates groundwater presence
A) Infiltration gallery B) Swale C) Drainage ditch D) Retention pond |