Nuclear Fission

Scientific Concept

"When a slow moving neutron enters the nucleus of uranium-235, it creates a turmoil in the structure of the nucleus. All the nucleons get disturbed and nuclear structure starts oscillating. The oscillations first give rise to a waist like structure. This proceeds to narrow and there develops a neck like structure. Further rapid movements make the neck even more elongated, which ultimately breaks. The break up leads to two smaller nuclei around the masses of barium and krypton. They can be cesium and rubidium also. When a 23592U undergoes fission, it generates three neutrons. These neutrons in turn go and initiate fission in other 23592U nuclei. Once one single slow neutron starts a fission in 23592U, the reactions in other 23592U are sustained by the first fission phenomenon itself.  This is called a chain reaction. Very large amounts of energy is released with each fission, therefore it can be imagined how much energy is released in a continuous chain reaction."

* Text and Image Reference:
Nuclear Fission and Fusion. (2004). Retrieved February 10, 2005, from http://home.att.net/%7Ecat4a/nuclear_III.htm

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Materials, Tools, & Prerequisites

Flash MX 2004

Minimum Screen Resolution: 1024 x 768

Level: Beginner

File: nuclear-fission-exercise.fla

Prerequisite: Tsunami Animation and Humoral Immune Response

Layers & Time Line

Design Procedures

Prerequisite: Tsunami Animation

1- Explore the different symbols in the library.

2- Study the timeline above.

3- Build the animation.

4- You may refer to the final .fla file for help.

Good Luck!