PBS
Pbs Learning Media: Radio Transmission
This interactive activity from A Science Odyssey tracks the journey of a sound wave from the moment a musician sings into a microphone until his voice reaches the vibrating speakers of an AM Radio.
TeachEngineering
Teach Engineering: Riding the Radio Waves
In this instructional activity students learn how AM radios work through basic concepts about waves and magnetic fields. Waves are first introduced by establishing the difference between transverse and longitudinal waves, as well as...
PBS
Pbs Learning Media: How Is a Radio Wave Emitted?
This illustrated essay from A Science Odyssey Web site explains the science behind radio waves, including the role of electrons and electromagnetic fields.
NASA
Nasa: Electromagnetic Spectrum: Radio Waves
Radio waves have the longest wavelengths in the electromagnetic spectrum. This NASA article discusses AM, FM, TV, cell phone, as well as radio astronomy, which all use this technology.
PBS
Pbs: Science Odyssey: Radio Transmission
PBS site explores radio transmission and provides a fun activity to go along with it. (Shockwave required) Click on links to discover more about the early years of radio, how radio waves are emitted, what the difference is between AM and...
CK-12 Foundation
Ck 12: Physical Science: Radio Waves
[Free Registration/Login may be required to access all resource tools.] Radio waves and how they are used for AM and FM radio and television.
PBS
Pbs: Who Made America?: Innovators: Edwin Armstrong
This brilliant engineer advanced both AM and FM radio, turning them into viable broadcast technologies, and innovated military radio uses in two World Wars.
Oklahoma Mesonet
Oklahoma Climatological Survey: Overview of Radiation
This site details what radiation is, the physics of radiation, and radiative transfer as it occurs in nature. Content explores the electromagnetic spectrum, electromagnetic waves, properties of radiation, and solar radiation.
Other
Federal Communications Commission: Major Initiatives
This site from the FCC gives information on the main focus of the Federal Communication Commission. They are responsible for most forms of communication.