Matter, Medium, Wave, Spectrum.

Spectrum, Medium, Wave, Matter.

Medium, Spectrum, Wave, Matter.

Wave, Spectrum, Medium, Matter.

Eating dinner

Using a microwave

Using a cell phone

Getting an x-ray

Sound waves are mechanical waves. Radio waves are electromagnetic waves. Electromagnetic waves do not require a medium to propagate.

Sound waves are electromagnetic waves. Radio waves are mechanical waves. Electromagnetic waves do not require a medium to propagate.

Sound waves are microwaves. Radio waves are electromagnetic waves. Electromagnetic waves do not require a medium to propagate.

Sound waves are mechanical waves. Radio waves are microwaves. Microwaves do not require a medium to propagate.

Infrared Light

Ultraviolet Light

Visible Light

All of the above

 Microwaves only travel in a single direction; this is why microwave ovens have a spinning plate.

 Radars use microwaves to detect objects.

 Microwaves are only used in microwave ovens.

 Microwave weapons are efficient because they don’t depend on weather conditions or visibility inhibitors.

Is a way to encode text messages on a letter-by-letter basis very simply. The message is transmitted using a series of tap sounds, hence its name.

Is a method used in telecommunication to encode text characters as standardized sequences of two different signal durations, called dots and dashes, or dits and dashes.

Morse code represents text, computer processor instructions, or any other data using a two-symbol system. The two-symbol system used is often "0" and "1" from the binary number system.

Is a Spelling Alphabet, a set of words used instead of letters in oral communication (i.e. over the phone or military radio).