A siren is a loud noise-making device. Civil defense sirens are mounted in fixed locations and used to warn of natural disasters or attacks. Sirens are used on emergency service vehicles such as ambulances, police cars, and fire trucks. There are two general types: mechanical and electronic.
Sounds with a frequency of 20 kHz and higher are referred to...
tornado & tsunami sirensis a siren used to provide an emergency population...
Babies make many different sounds from laughter to grunts to baby babble....
Rats are usually distinguished from mice by their size. In general, when...
A military, also known collectively as armed forces, is a heavily armed,...
In rail transport, a train is a series of connected vehicles that...
Created with AppPage.net
Similar Apps - visible in preview.