Ideas for a Mini-Unit: A work in progress

Major Concept: Light as Energy

9/27/98

Content Skills

Light Measuring

Transfer of energy Collecting Data

Sun as a Light Source Using Graphs

Recognizing Patterns

Inferring

Using Tools and Models

Communicating Results

The Challenge

Physics defines energy as the ability to do work. This is not a very seful definition when it comes to our everyday relationship with energy, and more specifically, our understanding of light as a form of energy and how it is transferred. Light is absolutely essential to survival of most forms of life on planet earth. So developing an understanding of what light is, and some of it's impacts on us is critical.

Being cool dudes from the third rock from the sun, one realizes that the single, most important reason for summertime is to go to the local pool and catch some rays. Of course, we all know that too much exposure to the sun can be harmful. Living in Kentucky climate requires us to consider all aspects of using the sun on a daily basis.

One day in the near future, it is apparent that one of those adult responsibilities all must consider is the monthly electric bill. Our climate allows the sun's energy to be used to assist in managing the size of one's electric bill. Our challenge is to consider how to more adequately use solar energy in building the homes of the future.

Performance Tasks

Task 1: Learn how light interacts with different colored substances

You are in charge of designing a new product for use in motor vehicles. The purpose of the product is to filter sunlight coming into the vehicle. This product will stick to the inside of the vehicle's windows and may be removed when not needed. The temperature inside the car will be affected as light filters through the product. Keeping this information in mind, you must analyze the colors available for this product using the materials provided. Collect temperature data using the three color filters provided. Graph the data, and based on the results of your investigation, which color(s) would you recommend be used for a product that filters the sunlight coming into vehicles in Kentucky? Use as much detail as possible to justify your recommendation(s).

Task 2: Learn how to use Solar Energy in your home

As the chief designer of homes for a local contractor, you have been tasked to consider maximizing the utilization of solar energy in the design of a new home. In this solar home, one will need to consider the home's location and all aspects of construction of a 2500 square foot, one-story home with a two-car garage.

Assessment: