Siren (noisemaker) facts for kids
Sirens were used in Britain in WWII to warn citizens of Air Raids by the opposing countries. After WWII when the Atomic Bomb was dropped on Japan. Sirens were used to warn of the USSR dropped an A-Bomb or H-Bomb on the USA. (these last two sentences do not make sense, decipher them if you can please since I can't- GWires) Today they are used for tornadoes or hurricanes or other natural disasters.
Images for kids
The electrically powered cylinder siren used to alert the town of Lowestoft during World War Two.
Siren (noisemaker) Facts for Kids. Kiddle Encyclopedia.