2. Slow rockets are referred to as "tubes".
3. Underwater rockets are called "torpedoes".
4. Fireworks are rockets used for entertainment.
4. The term "dud' refers to a rocket that does not fire.
5. The most elusive rocket is in your pocket.
![](http://1.bp.blogspot.com/-lmPBVUzMGtw/T7GcwKjsKNI/AAAAAAAABxQ/BgjUUD8yWIE/s1600/rocket2.jpg)