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## Water Sources - Not evenly distributed on Earth's surface - Can move from one store to another - Natural flows of water across land - Found below the surface of Earth ### Types of water sources: - **Freshwater:** - Used Directly - Glaciers, rivers, lakes, large masses of ice that rest...

## Water Sources - Not evenly distributed on Earth's surface - Can move from one store to another - Natural flows of water across land - Found below the surface of Earth ### Types of water sources: - **Freshwater:** - Used Directly - Glaciers, rivers, lakes, large masses of ice that rest on land/float in the sea - Soil, groundwater, water bodies surrounded by land. - **Saltwater:** - Oceans - Large masses of water connected to one another, largest: Pacific - Loose topmost layer of Earth's surface ## States of Water: - **Solid:** Freezes at cold temperatures - **Liquid:** Flows freely, sets shape but no fixed volume - **Gas:** Boils, steam ## Resource management - Ensuring natural resources are still available for future generations - **Sustainable use of resources** 1. Reuse 2. Reduce 3. Recycle 4. Recover 5. Refuse - **Human-centered:** Obtain materials for own use - **Nature-centered:** Valuable in itself. - Affected by culture, technology - "Useful"