How Do Tornado Sirens Work?

Answer

Tornado sirens are called civil defense sirens and work when danger is imminent in countries such as the US and others. They sound a high frequency sound when tornadoes are to happen, earthquakes, other cataclysms or even when an enemy air strike is happening in case of war. They then sound again to signal that the danger has passed.
Q&A Related to "How Do Tornado Sirens Work?"
Most communities that have tornado sirens installed will test these sirens on a regular basis. Not only do the tests ensure that the outdoor warning sirens are still operating properly
http://www.ehow.com/list_5979010_triggers-tornado-...
there are electromechanical sirens or there are sirens that have a combination of one or more loudspeakers (usually used for broadcasting voice messages) they also are either rotational
http://wiki.answers.com/Q/What_are_the_types_of_to...
Scottish natural philosopher (physicist) John Robison invented the noise sirens.
http://www.chacha.com/question/who-invented-tornad...
No one knows the exact location since we all do not live where you live. The best option is to contact your local emergency manager/coordinator or fire department. They will know
http://answers.yahoo.com/question/index?qid=201304...
Explore this Topic
Most communities that have tornado sirens installed will test these sirens on a regular basis. Not only do the tests ensure that the outdoor warning sirens are ...
Most communities that have tornado sirens installed will test these sirens on a regular basis. Not only do the tests ensure that the outdoor warning sirens are ...
A tornado siren will function by using usually a heavy duty battery to sound a very loud siren. When a tornado is spotted, the alarm is set off and the siren ...
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