the fireworks geek sheet

(use landscape orientation for optimal printing)

Color/Effect Main Mineral in Compound(s)
Green Barium (Ba(NO3)2, Ba(ClO3)2)
Red Strontium (Sr(NO3)2, SrCO3) / Lithium (Li2CO3)
Blue Copper (CuCO3, CuS, CuC2O4, C4H6As6Cu4O14)
Yellow Sodium (NaHCO3, NaNO3, NaClO4, Na3AlF6)
Pink Calcium (CaCO3, CaSO4, CaC2O4)
Turqoise Copper (CuCl)
Orange Strontium & Sodium / Charcoal
Silvery White Titanium, Zirconium & Magnesium
Purple Copper & Strontium
Gold Iron / Charcoal
Bright Flash or Shower Aluminum / Magnesium-Aluminum alloy
Shell Name Description
Palm Contains large comets, or charges in the shape of a solid cylinder, that travel outward, explode and then curve downward like the limbs of a palm tree
Round shell Explodes in a spherical shape, usually of colored stars
Ring shell Explodes to produce a symmetrical ring of stars
Willow Contains stars (high charcoal composition makes them long-burning) that fall in the shape of willow branches and may even stay visible until they hit the ground
Roundel Bursts into a circle of maroon shells that explode in sequence
Chrysanthemum Bursts into a spherical pattern of stars that leave a visible trail, with an effect somewhat suggestive of the flower
Pistil Like a chrysanthemum shell, but has a core that is a different color from the outer stars
Maroon shell Makes a loud bang
Serpentine Bursts to send small tubes of incendiaries skittering outward in random paths, which may culminate in exploding stars
source: http://www.howstuffworks.com/fireworks4.htm
(A) Calculate speed of sound at temperature T (°C): ____ m/s

v = 331 m/s + (0.6 m/s/°C)*T

(B) Time between seeing flash and hearing explosion: ____ s

(C) speed A x time B: ____ m (distance to exploding shells in meters)
(D) Conversion to kilometers: C x 0.001 = ____ km

(E) Conversion to miles: C x 0.000621 = ____ miles

(F) Conversion to fathoms: C x 0.547 = ____ fathoms