1. LT: I can explain positive and negative impacts of building a dam.
Thursday
LT: I can explain positive and negative impacts of building a dam.

2. Discuss Belo Monte Dam Video
What are the Kayapo people fighting for?
At 5:00 minutes, the photographer talks about what the women of Kenjab do everyday to survive (fishing, going to get water, etc.). How might the Belo Monte Dam change that?
At about 7:30, how high will the water be once it is dammed?
What will happen to the rainforest when it is under water?
Just after 8:30, what will happen to villages downstream from Belo Monte?
At 11:30, they explain WHY Brazil wants to build these 60 dams. Why? 

3. A dam is a structure built to control water through placement of a blockage of earth, rock and/or concrete across a stream or river.

4. Copyright © 2010 Ryan P. Murphy

5. Copyright © 2010 Ryan P. Murphy

7. The Debate Over Dams
Positives Effects
Negative Effects

8. The Debate Over Dams Positives Effects Generate power
Provide a clean water supply
Recreation
Irrigation
Controls floods

9. The Debate Over Dams Positives Effects Negative Effects Generate power
Provide a clean water supply
Recreation
Irrigation
Controls floods
Negative Effects
Flooding
Dangerous to humans and animals
Drying out soil
Changes the river
Displaces people

10. Draw a Dam Diagram
Your assignment for today is to draw a diagram that shows all of the impacts a dam will have on the environment – upstream and downstream.

11. Draw a Dam Diagram
Water level
Sediment (dirt)
Fish
People

12. Friday
LT: I can illustrate the impact of a dam.
Homework: Finish Oil Spill article and questions

14. Draw a Dam Diagram
Water level – Because the normal flow of water is blocked, the reservoir fills up (floods) and the river has less water than before

15. Draw a Dam Diagram
Water temperature – because the reservoir is so much deeper than the normal river, the water is much colder in the reservoir which hurts plants and animals that live there

16. Draw a Dam Diagram
Sediment (dirt) – Normally carried downstream by the river but is blocked by the dam. There is a lot more (too much) dirt in the reservoir and not enough dirt in the river.

17. Draw a Dam Diagram
Fish – Dams block the migration (movement) of fish) and entire species can be separated from each other. Below the dam, low water levels can also kill fish.

18. Draw a Dam Diagram
People – People lose their land to the canals, roads, etc. Additionally, like the Kayapo, their way of life will have to change if the river and fish population are changed. Many people have to move.