Learn about X Rays, CAT scans, and electromagnetic radiation in this section of the Physics 2000 site. (NOTE: Your computer needs to run JAVA programs for you to view this site.)
Questions
Give three examples of electromagnetic waves.
Describe an electric force.
How are CAT scans different from X rays? What creates the CAT scan image?
Here's a fun site from PBS that's all about radio. First, if your computer has Shockwave, click the Radio Transmission activity. You'll see how a singer's voice travels over radio waves to radios everywhere. Then, check out some of the short articles on radios.
Questions
A radio station uses five basic instruments in sending out radio waves, starting with a microphone. Name in order the next four instruments.
A radio in your home uses five basic parts to receive radio waves, starting with a receiving antenna. Name in order the next four parts.
What travels between the radio station's antenna and your radio antenna? At what speed does it travel?
