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T3BEdit

The T3B section covers radio and electromagnetic wave properties; the electromagnetic spectrum, wavelength vs. frequency, velocity of electromagnetic waves.
Click "Expand" to reveal the questions.

T3B01

What is the name for the distance a radio wave travels during one complete cycle?
Wavelength

T3B02

What term describes the number of times per second that an alternating current reverses direction?
Frequency

T3B03

What are the two components of a radio wave?
Electric and magnetic fields

T3B04

How fast does a radio wave travel through free space?
At the speed of light

T3B05

How does the wavelength of a radio wave relate to its frequency?
The wavelength gets shorter as the frequency increases

T3B06

What is the formula for converting frequency to wavelength in meters?
Wavelength in meters equals 300 divided by frequency in megahertz

T3B07

What property of radio waves is often used to identify the different frequency bands?
The approximate wavelength

T3B08

What are the frequency limits of the VHF spectrum?
30 to 300 MHz

T3B09

What are the frequency limits of the UHF spectrum?
300 to 3000 MHz

T3B10

What frequency range is referred to as HF?
3 to 30 MHz

T3B11

What is the approximate velocity of a radio wave as it travels through free space?
300,000,000 meters per second

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