A River's Tale
Simulate the flow of a river from its mountain source to the ocean. Observe how pollution affects the water quality on its journey.
- Select a **Flow Element** (Clean Water or Pollution) from below.
- Click "**Add Flow**" to send an element down the river.
- Click "**Add Source**" to create a major point of pollution along the path.
- Use "**Clear River**" to reset the flow and water quality.
- Observe the **Water Quality** counter as elements reach the ocean.
- Learn about the journey and health of river systems.
Rivers start high up, powered by gravity. Try sending a **Clean Water** drop down the stream!
The Hydrological Cycle and Pollution
The river's flow is governed by **gravity**, moving water collected from precipitation (**source**) down to a larger body of water (**ocean/mouth**). **Water pollution** occurs when harmful substances (chemicals, waste) enter the water, often originating from point or non-point sources.
| Concept | Description | Impact on Ecosystem |
|---|---|---|
| **Headwaters** | The source of the river (e.g., mountain melting snow). | Usually cleanest water; sensitive aquatic life. |
| **Tributaries** | Smaller streams feeding into the main river. | Introduce runoff, increasing vulnerability to pollution. |
| **Non-Point Source** | Pollution from diffuse areas (e.g., farm runoff, urban streets). | Harder to control; contributes significantly to overall toxicity. |
**Clean water** is vital for human health, agriculture, and maintaining aquatic ecosystems. Protecting river systems involves minimizing **wastewater discharge** and managing **land use** near the banks.
