Grade 9 Worksheet
Dunmore Lead Tap Sampling: Reading the Action Level
A grade 9 worksheet where students analyze a fictional town's lead tap-sampling data, find the 90th-percentile value, and compare it to the action levels.
Water Science · Grade 9
These materials teach earth science, chemistry, biology, and physics through water systems, from the water cycle to treatment chemistry.
61 materials written for this grade · refine by type, topic, or standard in the catalog
Grade 9 Worksheet
Ellery Point's Combined Sewer: Overflow Volume and Tunnel Storage
A grade 9 worksheet where students calculate combined sewer overflow volumes for a fictional coastal town, size a storage tunnel, and compare it with green retrofits.
Grade 9 Math problem set
Elmcrest Storage Tank: Fire Flow, Reserve, and Volume
A grade 9 problem set where students model a fictional town's cylindrical tank, find its volume in gallons, and track how much water a two-hour fire flow draws down.
Grade 9 Math problem set
Fallowmere's River Intake: From Stream Flow to Plant Capacity
A grade 9 problem set converting river flow among cfs, MGD, and gpm at a fictional town's intake, then testing a withdrawal limit against summer low flow.
Grade 9 Lesson plan
Ferncliff's Lead Pipes: The Chemistry of Corrosion Control
A grade 9 lesson on how corrosion control chemistry keeps lead out of drinking water, using the Flint example and a fictional town's decision to evaluate the solution.
Grade 9 Worksheet
Gantry Falls Dam: Calculating Hydropower Output and Demand
A grade 9 worksheet using head, flow, and efficiency to find a fictional dam's power and yearly energy, then weighing its output against a town's electricity demand.
Grade 9 Worksheet
Open-Channel Flow at Grantham: A Grade 9 Hydraulics Worksheet
A grade 9 hydraulics worksheet where students apply Q = A x V to an open channel, then convert flow between cubic feet per second, gpm, and MGD.
Grade 9 Math problem set
Pump Station Horsepower at Haldane: A Grade 9 Energy Problem Set
A grade 9 problem set where students find water horsepower, brake horsepower, motor power, and the daily energy cost of a fictional high-service pump station.
Grade 9 Lesson plan
Halesworth Farms: Crop Water Footprints and Irrigation Efficiency
A 50-minute grade 9 lesson where students compare the water footprint of crops and the efficiency of flood versus drip irrigation on a fictional valley farm.
Grade 9 Reading passage
The Sampling Route at Havenbrook: A Water Quality Technician's Day
A grade 9 reading passage that follows a technician through a fictional district's sampling route, with questions on procedure, limits, criteria, and career paths.
Grade 9 Worksheet
Hollin Gap Water Audit: Non-Revenue Water and Pipe Replacement
A grade 9 worksheet where students audit a fictional town's water losses, price the lost water, and weigh leak detection against a faster pipe replacement program.
Grade 9 Lesson plan
Larkspur Lake Algae and Nutrients: A Grade 9 Ecology Lesson
A 50-minute grade 9 lesson where students trace nitrogen and phosphorus as both crop nutrients and lake pollutants, then evaluate cleanup steps for a fictional lake.
Grade 9 Math problem set
Marlow Springs Aeration: Oxygen Demand and Blower Energy
A grade 9 problem set where students find the BOD load a fictional plant removes, convert it into oxygen demand, and compare blower energy, cost, and payback.
Grade 9 Worksheet
Chlorine Contact Time at Merrowfield: A Grade 9 CT Worksheet
A grade 9 worksheet where students find contact time from basin volume and flow, calculate CT for disinfection, and solve for the residual a plant needs at peak flow.
Grade 9 Math problem set
Orrick Treatment Plant: Detention Time and Filter Loading
A grade 9 problem set where students find a sedimentation basin's detention time and a sand filter's loading rate for a fictional treatment plant.
Grade 9 Math problem set
Pinehaven Well: Drawdown, Specific Capacity, and Safe Yield
A grade 9 problem set where students use a fictional town well's water levels to find drawdown and specific capacity, then set up equations for safe pumping yield.
Grade 9 Worksheet
Ridgecomb Booster Station: Pipe Flow and Pressure Math
A grade 9 science worksheet where students use operator formulas to find pipe flow, convert units, and calculate pump pressure for a fictional town's booster station.
Grade 9 Math problem set
Seawater Desalination at Sable Coast: A Reverse Osmosis Problem Set
A grade 9 problem set where students find recovery, salt rejection, and the daily energy and cost of a fictional seawater reverse-osmosis plant.
Grade 9 Lesson plan
Selby's Water Reclamation Plant: BOD Removal by Microbes
A 50-minute grade 9 lesson where students calculate biochemical oxygen demand removal at a fictional plant and link microbial treatment to a healthy river.
Grade 9 Quiz & test questions
Sturgeon Lake Nutrients: A Grade 9 Eutrophication Unit Test
A grade 9 test on nutrients as pollutant and resource, mixing multiple-choice, short-answer, and pounds-formula computation around a fictional lake's nutrient loading.
Grade 9 Lesson plan
Tamarack Basin Water Budget: Inflow, Storage, and Loss
A 50-minute grade 9 Earth-science lesson where students build a one-year reservoir water budget for a fictional basin and calculate how storage and residence time change.
Grade 9 Worksheet
Thornbury Ridge Snowpack: Water Equivalent and Spring Runoff
A grade 9 worksheet where students turn snow survey depths into snow water equivalent, scale them to basin runoff in acre-feet, and compare a warmer modeled year.
Grade 9 Quiz & test questions
Verdon Water Quality Unit Test: Treatment and Standards
A grade 9 unit test on drinking-water treatment and quality standards, mixing multiple-choice, short-answer, and computation items at a fictional town's plant.
Grade 9 Lab / experiment
Verrin River Thermal Mixing: Heat, Equilibrium, and Oxygen
A grade 9 lab where students mix warm and cold water to find equilibrium temperature, modeling a power plant's thermal mixing zone and its effect on dissolved oxygen.