1. NO RTW Objective: I will understand the properties of water. Agenda:
Monday, October 12th
NO RTW
Objective: I will understand the properties of water.
Agenda:
Blue Planet- Tidal Seas Questions pg. 36
Homework:
None 

2. Pg. 38 RTW: What does “thermocline” mean?
Tuesday, October 13th
Pg. 38 RTW: What does “thermocline” mean?
Objective: I will understand the process of desalination and design a successful desalination prototype.
Agenda:
Discuss the process of desalination
Design a prototype
Homework:
Study for quiz Friday!

3. Water Desalination Plant
Obtaining reliable fresh water supplies from challenging water sources
Pg. 37

4. Natural & Man-made Processes
Water Cycle
Thermal Desalination Process
Sun heats water in oceans, lakes, streams...
Water evaporates
Water condenses to form clouds
Rain falls back to the Earth
Hot plate heats water in desalination plant
Water evaporates
Ice forces vapor to condense
Water is collected in plant

5. Desalination Plant Please write & answer these questions on pg. 38
What is desalination?
How much does it cost to filter 1 cubic meter of water ?
What do they need to add to the water?
Why do you think Israel has one of the largest desalination plants?

6. Your Objective Design a desalination plant
Use a saltwater circuit to test the efficiency of the plant
Improve the design until the plant reaches the design specifications
Using the Saltwater Circuit to Test Efficiency:
After water has been collected, students should use the saltwater circuit and the collected water to test the efficiency of their plant. If the light bulb on the circuit turns on then the water has too much salt in it and the plant is not efficient. If the light bulb does not turn on then the plant was able to remove the salt from the saltwater mixture.
Design specifications: Your plant should be able to significantly remove the salt content from a saltwater mixture. We will test you plant using the saltwater circuit.

7. Engineering Design Loop Steps
Understand the need Brainstorm designs Select a design Build a prototype Test Improve the design
Engineers look for opportunities in problems society faces
Generate ideas on how to address the identified need
Pick the most promising design or combination of designs
Build your design
Find out if the design meets the design specifications
Make improvements to reach or exceed design goals

8. A Failed Desalination Plant Design
hot plate
condensed water falling into saltwater
plastic container
saltwater
evaporated water
ice
full foil cover
no. 10 tin can
Hot plate boils off water
Vapor condenses on the bottom of the plastic container
Condensate falls back into the saltwater mixture
Condenses =
Condensate =
This design fails because the clean water falls back into the saltwater.

9. Pg. 38 Get into a group of 3 people
On paper, draw out a model that labels all of the components of your desalination plant design.
Describe how the process will work.
If you need any supplies other than what’s listed, you may request them on the paper up front (not guaranteed, though)

10. Wednesday, October 14th
Pg. 38 RTW: Match the process with the correct change in state or definition.
Evaporation
Precipitation
Transpiration
Condensation
Liquid to gas
Gas vapor to liquid
Liquid that returns to the earth’s surface
Vapor that enters the atmosphere from the leaves of plants

11. Wednesday, October 14th
Objective: I will understand the process of desalination and create a successful desalination prototype.
Agenda:
Create your prototype
Homework:
Study for quiz Friday!

12. Thursday, October 15th
Pg. 38 RTW: Do you think thermal desalination is a viable solution to fresh water shortages? Why or why not?
Objective: I will understand the process of desalination and create a successful desalination prototype.
Agenda:
Test your prototype & redesign
Homework:
Study for quiz tomorrow!

13. Friday, October 16th
Pg. 38 RTW: What could be some negative impacts of thermal desalination?
Objective: I will understand the process of desalination and create a successful desalination prototype.
Agenda:
Reflect on your design and the desalination process.
Quiz!
Turn in Water Properties Lab
Homework:
None 

14. Pg. 38 Water Desalination Plant Reflection
Describe the thermal water desalination processes.
What part(s) of the design process did you help with?
What did you learn in this activity?
How would you change this activity for future classes?
How would you improve on your original design? Why?
*Now draw out and label your new design*