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Big Ideas

Big Ideas. Where does our water come from? How does rainfall become a river? How do ridges and valleys affect runoff? Where would you build a farm? Where would you build a city? Where does their water come from; where does it go? What happens to pollution?. Activity Summary (30 min).

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Big Ideas

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  1. Big Ideas Where does our water come from? • How does rainfall become a river? • How do ridges and valleys affect runoff? • Where would you build a farm? • Where would you build a city? • Where does their water come from; where does it go? • What happens to pollution? Watered/Branching_out_activity

  2. Activity Summary (30 min) • Some hydrologists study how water moves – who has learned about the water cycle? Today we will consider only rainfall and runoff over a mountain that you will make. Scientists sometimes build scale models to test their understanding of our complex world. • Ask: Where does our water come from? Construction sequence follows • How does rainfall become a river? It flows down and comes together • Show Watershed Visualization – Module 2 – What is a watershed • How do ridges and valleys affect runoff? Flows away from / toward • Where would you build a farm? Where would you get water for plants? • Where would you build a city? • Where does their water come from; Where does it go? • What happens to pollution? If the city builds a dump; if the farmer uses chemicals; if a mine dumps waste into a river valley? Put a red dot near the city, the farm, the mine to represent a source of contamination. • What happens to the contaminated ground when it rains? Reference: Project WET – Branching Out; Salmon & Steelhead, Unit Activities for Educators, 6 – Defining our watershed <groups.ucanr.org/sns/> Watered/Branching_out_activity

  3. 1 Crumple the paper into a ball Arruga el papel para fomar una bolita Watered/Branching_out_activity

  4. 2 Unfold and create valleys and mountains. Tape corners to the orange paper. Extiende el papel ycrea valles y montaÑtas. Pega las esquinas al papel naranja con cinta pegante. Watered/Branching_out_activity

  5. 3 Use the markers to color: rivers, ridges, farms, mines and cities Usa los marcadores para colorear: rios, divisorias, fincas y ciudades. Watered/Branching_out_activity

  6. Outside: Spray with water,watch what happens to the water! Rocea con agua y mira lo que pasa! 4 Watered/Branching_out_activity

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