Radio Waves

Frequency: 
Radio Waves frequency ranges from 
30 GHz to 300 KHz.

Wavelength:
They have a wavelength that ranges from 1 cm to 1 km.

Practical Applications:
Radio waves are used in navigation systems and radio communication.

Negative Factors/Health Precautions:
Radio wave exposure can lead to leukemia, cancer, and other disorders.

Future Possibilities/Interesting Fact:
 Radio waves can be generated by natural sources (lightning, astronomical phenomena), or artificial sources (broadcast radio towers, cell phones, satellites, radar).

Location On The Spectrum:
Radio waves are the first wave on the spectrum having the longest wavelength.