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WS_Science By You Activity_Crystal Radio

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+ ward ' s science Page 1 Building Your Own Crystal Radio Submitted by: Vicky L. Recommended Grade Level(s): Appropriate for: Grades 11 – 12 Time Requirements: Activity Time: 150 min – 250 min A period is about 50 minutes long. Estimate of about 3-5 days of lessons. Teaching Topics & Concepts: Students will research how a radio sends and receives AM and FM signals. Students will design and construct a crystal radio. Students will also demonstrate their knowledge of how a radio works using electromagnetic radiation by creating a presentation, flier, or poster to showcase their expertise. National Science Standards Alignment NGSS Standards: HS-PS4-5: Communicate technical information about how some technological devices use the principles of wave behavior and wave interactions with matter to transmit and capture information and energy. HS-PS3-3: Design, build, and refine a device that works within given constraints to convert one form of energy into another form of energy. HS-PS4-3: Evaluate the claims, evi- dence, and reasoning behind the idea that electromagnetic radiation can be described either by a wave model or a particle model, and that for some situations one model is more useful than the other. California Content Standards: 4. Waves have characteristic properties that do not depend on the type of wave. As a basis for understanding this concept: a. Students know waves carry energy from one place to another. e. Students know radio waves, light, and X-rays are different wavelength bands in the spectrum of electromagnetic waves whose speed in a vacuum is approximately 3x 108 m/s (186,000 miles/second). Objectives: Students will be able to construct and evaluate how components of a crystal radio relate to the communication system that trans- mit information using radio waves to carry a signal by creating a crystal radio. Students will also research and compile information on how radio works using electromagnetic radiation by presenting their findings through a flier, google slides, video or a poster. This content is being brought to you by the Ward's World, Science By You program. This program brings lesson and classroom activity ideas directly from science teachers around the nation right to you. From best practices to activities, Science by You offers inspiration for every subject and every grade level. Interested in sharing your own content? Learn how today. PMS200 Black 70% Cool Gray 10 Black Astra Regular get for free from dafont.com Safety • Students need to be careful when using scissors to cut holes or wires. !

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