no they are too long
Radar waves are too long to be seen.
Too Long.
Yes, radar waves are radio waves and too long for the eye to see (off the red end of the visible spectrum) and X rays are too short to see (off the blue/violet end of the visible spectrum).
no because the wavelength of the waves are too short for us to see
Yes. The visible spectrum of light is much shorter than the shortest radar (radio) wave.
Having a radar means you can detect enemies before they can see you (unless they have a radar too).
Radar comes from Radio Detection and Range. By definition, it uses radio waves. Ultra sonic waves, very high frequency audio waves, are used in Sonar, the name being analogous to Radar. Infra Sonic waves are of far too long a wavelength to be useful for any measurement of the distance of the target. [And there are some technical reasons as well - not dealt with here.]
sound waves (If they're too long or too short, then you can't hear them, but they're still there anyway.)
Television waves are radar waves or radio waves simply because they are useful for long term communication and are readily reflected by the ionosphere. Microwaves are used for short term communication very rarely and for heating purposes. All three however travel at the same speed that is 299,792,468 m/s.
RADAR determines the distance and direction to anything that reflectsradio waves ... usually material objects, but it responds to atmosphericphenomena too.
Tornadoes can be very small, sometimes too small to be detected by Doppler radar, especially at long distances. The farther away from the radar a storm is, the less detail you can make out and the less you are able to see close to the ground.
They are too long. For a good comparison of different waves, look up "electromagnetic spectrum".