Rivers & Soil
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Q. A river's flow is measured at 50 m³/s. If the river narrows, causing the flow to increase to 75 m³/s, what is the percentage increase in flow?
Q. A river's flow rate is measured at 1500 liters per second. How many cubic meters of water does it flow in an hour? (2021)
Q. A river's flow rate is measured at 200 cubic meters per second. How much water flows through the river in one hour? (2020)
Q. A river's sediment load is measured at 200 kg per cubic meter of water. If the river has a flow of 100 m³/s, what is the sediment load per second? (2023)
Q. A river's sediment load is measured at 300 kg per cubic meter of water. If 1000 m³ of water flows, how much sediment is carried? (2019)
Q. A river's velocity is measured at 2 m/s. If the river's width is 10 m and depth is 3 m, what is the discharge?
Q. A river's width is 15 m and its average depth is 2 m. What is the cross-sectional area of the river?
Q. A river's width is 50 meters and its average depth is 3 meters. What is the cross-sectional area of the river? (2022)
Q. A soil sample contains 40% sand, 30% silt, and 30% clay. What is the percentage of silt in the sample? (2023)
Q. A soil sample contains 40% sand, 30% silt, and 30% clay. What is the percentage of silt in the soil?
Q. A soil sample contains 40% sand, 30% silt, and 30% clay. What is the percentage of clay in the sample? (2022)
Q. A soil sample has a moisture content of 20%. If the dry weight of the soil is 80 kg, what is the weight of the water in the sample?
Q. If a river basin has an area of 2000 km² and receives an average rainfall of 800 mm per year, what is the total volume of water received by the basin in cubic meters? (2000)
Q. If a river basin has an area of 500 km² and receives an average rainfall of 800 mm annually, what is the total volume of water received by the basin in cubic meters? (2022)
Q. If a river deposits 500 kg of sediment per cubic meter of water, how much sediment is deposited when 1000 m³ of water flows? (2021)
Q. If a river deposits 5000 cubic meters of soil per day, how much soil will it deposit in a week? (2019)
Q. If a river flows at a speed of 5 km/h and a boat can travel at 15 km/h in still water, what is the speed of the boat upstream? (2021)
Q. If a river flows through a valley with a gradient of 1 in 100, what is the vertical drop over a distance of 200 km? (2019)
Q. If a river has a discharge of 500 cubic meters per second and the cross-sectional area of the river is 100 square meters, what is the velocity of the river?
Q. If a river has a discharge of 500 m³/s and the cross-sectional area of the river is 25 m², what is the velocity of the river?
Q. If a river has a sediment transport capacity of 200 kg/m³ and flows at a rate of 10 m³/s, what is the total sediment transported in one hour? (2000)
Q. If a river has a slope of 1 in 1000, what is the vertical drop over a distance of 5 km?
Q. If a river is 300 meters wide and the current flows at 2 m/s, how long will it take a swimmer to cross the river if he swims at a speed of 1 m/s perpendicular to the current?
Q. If a river's current is 3 km/h and a boat travels downstream at 12 km/h, what is the speed of the boat relative to the riverbank? (2022)
Q. If a river's flow is measured at 300 m³/s, how many liters of water flow in one minute? (2023)
Q. If a river's flow rate increases by 20% and its original flow rate was 50 m³/s, what is the new flow rate?
Q. If a river's flow rate is 1000 m³/s and it carries 200 kg of sediment per cubic meter, what is the total sediment load in kilograms per second?
Q. If a river's flow rate is 200 cubic meters per second, how much water flows in one hour? (2022)
Q. If a river's flow rate is 500 cubic meters per second, how many liters of water flow through the river in one hour? (2000)
Q. If a river's flow rate is 500 cubic meters per second, how many liters of water flow in 10 minutes? (2019)
