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Modeling a Local Water System

Grade 5 Earth & Space Science — Water on Earth Systems | Unit 1, Lesson 6 of 6

📚 Grade: 5th Grade⏱️ Duration: 45–60 minutes🔬 Subject: Earth & Space Science — Water on Earth Systems
🗺️💦
A model can show how water moves through a real place.
📋 NGSS Standard:
5-ESS2-1 — Develop a model using an example to describe ways the geosphere, biosphere, hydrosphere, and/or atmosphere interact.

🎯 Learning Objective

Students will build and defend a model of a local or imagined water system using Earth-system interactions.

💡 The Big Idea

A strong model helps explain how water moves through a real place and how the Earth systems interact there.

🔬 The Science

Science Snapshot
Local water systemrain / snowsoil + plantsstorm drains or creekpond / groundwater
A useful local model shows where water is stored, where it moves, and what controls that movement.

What is happening?

A local water system model shows how water moves through a real place such as a neighborhood, watershed, or schoolyard. Good models simplify reality, but they still keep the most important pathways and relationships.

Why it works that way

Scientists use models to test ideas that are hard to watch all at once. A model can show uphill and downhill flow, infiltration spots, runoff routes, plants, drains, and where water collects after weather events.

Look for this in the lesson

Students should label both storage places and movement arrows. The model becomes more scientific when it explains why water follows those paths rather than acting like a decorative map.

Ask while you read: Does your model show both places where water stays and arrows for where it travels?

📦 Materials

🏠 Household Items to Gather

📋 Printables

🧪 Modeling Challenge

Step 1 — Choose the place (5 min)
Use a local area or an imagined landscape with land, sky, water, and living things.
Step 2 — Add water reservoirs (10 min)
Include clouds, ocean/lake/river, soil, or groundwater as needed.
Step 3 — Add movement arrows (10 min)
Show evaporation, precipitation, runoff, infiltration, or collection.
Step 4 — Label Earth systems (10 min)
Mark atmosphere, hydrosphere, geosphere, and biosphere.
Step 5 — Defend the model (10 min)
Explain how the model shows water moving through a connected system.

💬 Discussion Questions

What processes must appear in a complete water-system model?At least some of the key movement processes like evaporation or runoff.
How do labels help a model?They make the interactions easier to understand.
Why is this still a model and not the real system?It is a simplified representation.

🚀 Extensions

Extension: After a rainy day, compare your model to what you noticed outside and revise it if needed.

👩‍🏫 Parent/Teacher Notes

Teaching move: Ask students to keep the model readable. Clarity matters more than cramming in every possible detail.

Student Worksheet

Name: ________________________     Date: ________________________

1️⃣ Build your local water-system model

2️⃣ Explain your model

🔑 PARENT ANSWER KEY — Detach before giving worksheet to students

Sample Successful Response

The model includes reservoirs, movement arrows, and Earth-system labels. The explanation describes how water moves through the place and how systems interact.

✅ What Success Looks Like