Скачать презентацию Monday October 12 th NO RTW Objective I
c79411e292299fc95504992601d65389.ppt
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Скачать презентацию Monday October 12 th NO RTW Objective I
Скачать презентацию Monday October 12 th NO RTW Objective I
Monday, October 12 th NO RTW Objective: I will understand the properties of water. Agenda: Blue Planet- Tidal Seas Questions pg. 36 Homework: None
Tuesday, October 13 th 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!
Water Desalination Plant Obtaining reliable fresh water supplies from challenging water sources Pg. 37
Natural & Man-made Processes Water Cycle Sun heats water in oceans, lakes, streams. . . Water evaporates Water condenses to form clouds Rain falls back to the Earth Thermal Desalination Process Hot plate heats water in desalination plant Water evaporates Ice forces vapor to condense Water is collected in plant
Desalination Plant Please write & answer these questions on pg. 38 1. What is desalination? 2. How much does it cost to filter 1 cubic meter of water ? 3. What do they need to add to the water? 4. Why do you think Israel has one of the largest desalination plants?
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 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.
Engineering Design Loop Steps Understand the need Engineers look for opportunities in problems society faces Brainstorm designs Generate ideas on how to address the identified need Select a design Pick the most promising design or combination of designs Build a prototype Build your design Test Find out if the design meets the design specifications Improve the design Make improvements to reach or exceed design goals
A Failed Desalination Plant Design full foil cover Hot plate boils off water Vapor condenses on the bottom of the plastic container Condensate falls back into the saltwater mixture ice plastic container evaporated water condensed water falling into saltwater This design fails because the clean water falls back into the saltwater. no. 10 tin can hot plate
Pg. 38 1. Get into a group of 3 people 2. On paper, draw out a model that labels all of the components of your desalination plant design. 3. Describe how the process will work. 4. If you need any supplies other than what’s listed, you may request them on the paper up front (not guaranteed, though)
Wednesday, October 14 th Pg. 38 RTW: Match the process with the correct change in state or definition. 1. Evaporation a. Liquid to gas 2. Precipitation b. Gas vapor to liquid 3. Transpiration c. Liquid that returns to the earth’s surface 4. Condensation d. Vapor that enters the atmosphere from the leaves of plants
Wednesday, October 14 th Objective: I will understand the process of desalination and create a successful desalination prototype. Agenda: Create your prototype Homework: Study for quiz Friday!
Thursday, October 15 th 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!
Friday, October 16 th 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
Pg. 38 Water Desalination Plant Reflection 1. Describe thermal water desalination processes. 2. What part(s) of the design process did you help with? 3. What did you learn in this activity? 4. How would you change this activity for future classes? 5. How would you improve on your original design? Why? *Now draw out and label your new design*
Скачать презентацию Monday October 12 th NO RTW Objective I
c79411e292299fc95504992601d65389.ppt