Grade 7 Worksheet
Phase Changes at Stourton Reservoir: A Grade 7 Water-Cycle Worksheet
A grade 7 worksheet using a reservoir through the seasons to model how heat changes particle motion during freezing, melting, and evaporation in the water cycle.
Water Science · Grade 7
These materials teach earth science, chemistry, biology, and physics through water systems, from the water cycle to treatment chemistry.
67 materials written for this grade · refine by type, topic, or standard in the catalog
Grade 7 Lab / experiment
Stroudwell Ridge Soils: How Much Irrigation Water Does Soil Hold?
Students pour a measured 100 mL through sand, loam, and clay soil samples, calculate the percent each soil holds, and use the results to set an irrigation schedule.
Grade 7 Worksheet
Tanner Creek Water Quality: Oxygen, Temperature, and pH
A grade 7 science worksheet comparing dissolved oxygen, temperature, and pH at two sites on fictional Tanner Creek, with percent-change work and a fish habitat benchmark.
Grade 7 Lesson plan
Tarlton Farm Irrigation Efficiency: A Grade 7 Water-Use Lesson
A 50-minute grade 7 lesson comparing flood and drip irrigation and crop water footprints to show how farms can withdraw less water from rivers and aquifers.
Grade 7 Reading passage
A Shift at Two Rivers: Water Career Paths and Choices
A grade 7 informational passage following a treatment plant operator's shift, then laying out the range of water-sector careers, pay, and education paths.
Grade 7 Math problem set
Verdon Water District Sampling: Probability and Percent Problems
A grade 7 science problem set where students use a water district's sample results to find probabilities, percents, and predictions, and to reason about sample size.
Grade 7 Math problem set
Wetherby Reservoir Road-Salt Chloride: A Grade 7 Proportion Set
A grade 7 problem set tracking chloride from winter road salt in a reservoir: percent increase, proportional rates, ppm equivalence, and percent error.
Grade 7 Worksheet
Sludge Microbes at Wickford Water Reclamation: Grade 7 Worksheet
A grade 7 science worksheet on the microbes that clean wastewater: students reason about food and oxygen supply and compute the percent of BOD an aeration tank removes.
Grade 7 Worksheet
Alder Run's Aeration Tank: Bacteria, Oxygen, and BOD Removal
A grade 7 worksheet on activated-sludge treatment biology, using real EPA effluent standards to calculate percent BOD removal at a fictional facility.
Grade 7 Lesson plan
Blackwood Springs: Tracking Chlorine Demand in Distribution
A grade 7 lesson calculating chlorine demand at two points in a fictional plant's distribution system, checked against the real federal maximum residual limit.
Grade 7 Math problem set
Blue Heron Creek: What a Five-Site pH Sample Can and Can't Tell You
A grade 7 math set using a fictional creek's pH sampling data to practice mean and range, then reasons about how well a small sample represents a waterway.
Grade 7 Worksheet
Cinderwood's Well 3: Reading Drawdown in a Pumping Test
A grade 7 groundwater worksheet using a fictional town's well-pumping data to calculate drawdown, compare two wells, and reason about the cone of depression.
Grade 7 Lesson plan
Copperline Creek's Watershed: Measuring 20 Years of Paving Over
A grade 7 lesson calculating the percent increase in a fictional watershed's impervious surface over 20 years, linked to faster stormwater runoff.
Grade 7 Reading passage
How Dams Store Water and Make Electricity: A Hoover Dam Reading
A grade 7 informational passage on how dams store water for supply and flood control and generate hydropower, using Hoover Dam's real power capacity.
Grade 7 Debate kit
Recycled Water or a New Reservoir? A Grade 7 Water-Supply Debate Kit
A grade 7 debate on whether a community should treat wastewater to drinking-water standards instead of building a reservoir, with evidence on cost and trust.
Grade 7 Worksheet
Sabine Bay's Desalination Pilot: Membrane Rejection and Flow Splits
A grade 7 worksheet on a fictional town's reverse osmosis pilot, calculating percent TDS removal, the permeate-reject flow split, and a gpm-to-gallons conversion.
Grade 7 Lesson plan
Thistlewood Reservoir: Why Algal Blooms Crash Oxygen at Dawn
A grade 7 lesson using a fictional reservoir's oxygen readings across a day to explain how nutrient pollution fuels algal blooms and a dawn oxygen crash.
Grades 7–8 Lab / experiment
Coagulation and Sedimentation: A Jar Test for Cloudy Water
A two-session lab where teams make standardized muddy water, dose one jar with a coagulant, and graph clarity over time as treatment operators do in a daily jar test.
Grade 7 Quiz & test questions
Willow Creek Water Quality Monitoring Assessment
A grade 7 science assessment on dissolved oxygen, pH, and sampling design, using data from two fictional Willow Creek monitoring sites to test water-quality reasoning.