Remote controlled toys use electromagnetic waves to send signals from the remote to the object being controlled.
Find as many facts about Electromagnetic waves as you can in 5 minutes (pages 71-75).
Electromagnetic Waves Facts • Electromagnetic waves require no medium—they can travel through empty space or a vacuum. • Electromagnetic waves are transverse waves caused by changing electric and magnetic fields. • Energy transferred by electromagnetic waves is called “electromagnetic radiation” • Electromagnetic waves travel at the same speed... 186,000 miles per second (Sun to Earth ~8 minutes). • Electromagnetic waves have different wavelengths and frequencies (measured in Hz—just like sound waves).
Electromagnetic Wave Types Read pages 76-81 in your Science Explorer book to find the three most important facts about each of the following wave types and report them to the class: • Radio Waves • Microwaves • Infrared Rays • Visible Light • Ultraviolet Rays • X-Rays • Gamma Rays