Prompt: 1/15
001.friction ; when rubbed together
002.inertia ; in constant motion
003.equilibrium ; balancing act
004.momentum ; impetus of a moving object
005.bouyancy ; sink or float?
006.covalent ; bond by sharing
007.matter ; to change or not to change
008.fission ; breaking down
009.fusion ; merging to a unified whole
010.
alchemy ; fair exchange 011.constellation ; connect the dots
012.eclipse ; what is hidden, what is real
013.black hole ; nothing can escape
014.aurora borealis ; glowing in brilliant colors
015.light-year ; the distance between us