Fireworks illustrate energy transformation as well  as the conservation of momentum.
To project the explosives up requires conversion of   chemical energy to kinetic energy. The kinetic energy is used to overcome  gravity and is converted to potential energy in the process. During  the explosion, chemical energy  is converted to mostly light,  heat  and sound. The symmetry the fragments display is a consequence of the conservation  of  momentum. The sum of the momenta before and after explosion is zero. 
Gravity makes the projectiles follow an inverted parabola.
According to the "Big Bang Model" our universe may be viewed as a remnant  of  a spectacular  and mysterious firework  that took  place  about 15 billion years ago.

Physics Links
Virtual Phys Lab
PHYSICS  2000

The Standard Model & Beyond 
Two-Nucleon  SWEPs.PPT 
 

PHYSICS
AT

SUMER   2013 PHYSICS  COURSES

Dr. Mesgun  Sebhatu
Phys 253

Dr.  Ponn  Mahes
Phys 101
Phys102

Mr.  T.J.  Lipinski
Phys253

Dr. David  Whitely

Ms. Kristen Kull

Our Department offers:

an Applied Physics Minor 

and 
A Pre-engineering Program.

Dept of Chem/Phys/Geol
 

Films On Demand