8: Obtaining, Evaluating, and Communicating Information

Students will discuss social, cultural, and economic implications of sustainable solar energy.Students will construct and test solar panel arrays to power LED lights, fan motors, and music playersStudents will review circuitry basics and solar cell layersStudents will analyze and share out power generation results with classmatesStudents will construct and test an oxidized copper sheet solar cellStudents will share and analyze oxidized copper sheet solar cell dataStudents will construct and test titanium dioxide coated “raspberry juice” solar cellsStudents will collect and analyze titanium dioxide coated “raspberry juice” solar cell data.Students will discuss results and draw conclusions about variables that may affect power generationStudents will visit a solar cell or silicon manufacturing facility and/or engage with guest speakers. Students will learn more detailed solar cell principles and manufacturing techniques involved in solar cell constructionStudents will research chemicals, materials and procedures for their own solar cell designsStudents will build and present models of their proposed solar cellsStudents will construct and test unique solar cellsStudents will present construction progress and project obstaclesStudents will format solar cell data, draw conclusions, and construct an engineering report as a research poster

To build empathy for people in emergency situations and an understanding of how access to energy resources can increase one’s safety, health, and comfort. To understand the nature of a variety of energy needs and how different applications have different optimal solutions. To develop models to explain the molecular and extended structures of energy resources, including how the resources change when energy is generated (Electron movement in PV cells, combustion reactions in fuel). To understand that the properties of substances depends upon the atomic / molecular structure, which changes with chemical reactions. To build a circuit that includes a solar module and measure the voltage and current. To gather and evaluate information to describe the impact on society of converting natural resources into PV cells. To design, build and test a device that uses a chemical reaction to generate or absorb thermal energy. Evaluate and revise a plan for the energy resources one should store to prepare for a natural disaster. 

Students will understand ten renewable and non-renewable energy sources on the earth.Students will learn the locations of different energy sources on the earth.Students will learn the history of energy sources and how humans have used them.Students will learn about innovations and inventions used to find, recover, store, and release energy for human consumption.Students will understand that hot air risesStudents will understand why hot water and hot air rise and cold air and cold water sink.Students will learn that wind is produced by warm air rising and cold air sinking.Students will learn that the energy of moving hot air can be converted into other forms of energy.Students will understand that energy from the sun can be converted into heat.Students will discuss the effects of the chimney stack phenomenon.Students will understand that wind energy can be converted into other forms of energy.Students will determine different methods to increase the effectiveness of a wind turbine blade by harnessing and converting the mechanical energy of the wind.Students will determine that thermal energy resulting from the sun’s radiation can create an updraft that will power a turbine to spin.                                       Students will identify characteristics of turbine design that improve the success of their device.Students will utilize content from previous phenomena they investigated, such as the chimney stack effect and Norwegian candle toys, to determine how to best harness the energy transformed by their device from the sun.Students will be able to define and explain what a solar updraft tower is.Students will make connections between their previous engineering challenge and a real world solution to the world’s growing energy demands.

After the completion of this lesson students will be able to: • Describe how solar cars work • Accurately record and measure data • Use data to propose changes to experimental designs • Research a topic • Complete a full engineering assignment • Explain pros/cons of various prototypes • Work successfully within a group to accomplish a specific task • Brainstorm various ideas