Water Cycle (Grades 6–8)

A flash flood wiped out a century of water records, and your student is the one who has to rebuild them. The Hydrological Archives treats the water cycle the way a real hydrologist does. Guided by the Archivist of Mosswood, your student works through 10 operations over two weeks: where Earth's water actually is (and how little is usable), what drives evaporation, how humidity and dew point build clouds, how to read precipitation statistics, how watersheds and runoff predict floods, how groundwater and aquifers work, the role forests play through transpiration, how cities reshape the water cycle, and how a warming climate intensifies all of it — finishing with a full hydrology report. The math is genuine: percentages, rates, statistics, and the rational method, applied to real scenarios. Printable and independent-friendly, with everything a parent needs to grade it. What's Inside: - 10 operations across 2 weeks, building to a capstone hydrology report - Global water budget, evaporation, cloud physics, watersheds, groundwater, and climate - Real data tables, statistics, and applied calculations - An assessment rubric, teacher notes, and a full answer key - A Certified Hydrologist certificate ESA-eligible — pay with your ESA where your program covers curriculum.