Material Detail

In this activity, students learn that light carries information. Students also discover that infrared (IR) radiation is a form of light that in some cases behaves like visible light and in other cases behaves very differently. For example, some objects that block visible light allow infrared light to pass through. This activity requires the use of both common classroom materials (e.g., laser pointer) and special materials (e.g., photocell). It is supported by teacher notes, information on materials and preparation, background information on student misconceptions, an activity sheet, an answer key, and a pre-assessment activity. This activity is the last of four activities in the "Active Astronomy" educator's guide. Activities in the guide are designed to complement instruction on the electromagnetic spectrum with a focus on infrared light. The activities build upon each other and are best taught in order.

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