Page 11 - Demo

Your Safer Source for Science
EARTH SYSTEMS: WATER, continued
Water Cycle Adventure—
Water Cycle Model with
How Hard Is Your Water?—
Super Value Kit
Study Cards
Student Laboratory Kit
Send your students on an adventure where they follow a drop of water navigating the water cycle. This interactive exercise helps students understand that the seemingly simple cycle of evaporation, condensation and precipitation is much more complex. AP7675 I $14.40
This marvelous teaching tool simulates the water cycle as it occurs in nature. Use this two-piece plastic terrain model with ice, water and a desk lamp. Students can create and study firsthand—clouds, fog, rain forma- tion, rivers and melting snow processes. Observe how water evaporates from a lake, collects and condenses on the cloud form and precipitates onto the land areas. AB1159 I $114.45
The whitish, film-like deposits on glassware, pots and pans are calcium and magnesium salts found in water. As the calcium and magnesium content in water increases, so does water hardness. With this kit, students can measure the level of hardness of your water supply. Kit includes reproducible student handouts, teacher notes and all necessary chemicals. Complete for 30 students working in pairs.
FB0411 I $20.80
Water Hardness Testing Paper
The easy way to determine water hardness in seconds! One test paper measures water hard- ness between 0–20 grains of calcium carbonate per gallon. The second measures between 10–50 grains per gallon. Both test papers are 4.5 meters in length, enough for over 100 tests. Simply tear off a strip of test paper, immerse it in water for five seconds, then compare the color to the corresponding color chart.
AB1161 I $11.95
Find more water testing kits & models
Water Treatment Activity Model
Build a model water treatment plant—right in your own classroom—with this hands-on activity! Graphically demonstrate the phys- ical, chemical and biological processes involved in water treatment as your class gets a firsthand view of water treatment and sewage remediation.
at flinnsci.com
AP5312 I $242.50
EARTH SYSTEMS I FLINN SCIENTIFIC 11