K-12

This lesson describes the extensive use of radio waves. Students will learn that radio frequencies have numerous applications, and require government regulation to prevent interference and unfair competition. In addition, students will have a chance to investigate their own questions regarding radio.

Students will use their knowledge of the electromagnetic spectrum to build a spark gap transmitter. The device generates pulses of radio waves that are detected by an AM radio receiver.

Students will learn how satellites collect data and communicate that information with researchers on Earth. Students will use this data to create a thermal map using isotherms. Lastly, students will use the satellite data to determine changes in sea surface temperature.

Students will use their knowledge of seafloor features to learn about the movements of marine organisms (e.g. sharks). They will gain an understanding of how marine animals are tagged and tracked with satellite technology as well as gain insight regarding the pros and cons of learning about animal behavior.

The students will learn about the fundamentals of the electromagnetic spectrum. Radio frequency will be emphasized, especially its usage in science, astronomy, wireless communication and modern applications. Finally, the RTL-SDR dongle will be presented to the students. This device will be used to identify local radio broadcasters.

Students will investigate and discuss the health effects of radio frequencies. Then they will present their argument in an eye-catching presentation.

Students will use their knowledge of radio frequencies to design and carry out an investigation of Wi-Fi strength around the school. The data will be analyzed and presented to school staff in an effort to improve connectivity.

Students will research how a radio sends and receives AM and FM signals. Students will then design and construct a crystal radio. Finally, students will demonstrate their knowledge of how a radio works using electromagnetic radiation by creating a presentation, flier, or poster to showcase their expertise.

Students will choose a radio wave application that they would like to research and compile the most pertinent information to present and share with the class about the uses and applications of radio waves. Students will work in teams of 2-4 people to research, create, and design the best digital and oral presentation.

Students will understand how data from radio telescopes are used to create images of celestial objects. They will further explore ways to enhance visual representations of the data by including sound using Afterglow Access sonification software tool.