Research Project Waves
Easy: Go to Clever, then go to World Book Online. Click Student 5+ then use the search bar to find what you need.
Television Links:
Technology and waves (video) | Khan Academy (Video use headphones)
How does television (TV) work? - Explain that Stuff (analog TVs)
Cell Phone Links:
https://youtu.be/DoBhZEgjEuA (video use headphones)
Radio Links:
Wi-Fi Links: