bubbles

3. (unhygenic) depository of spent gum in San Luis Obispo, California
4. existence of these are hypothesized to be related to the release of vast amounts of energy emitted from the supermassive black hole at the center of our Milky Way galaxy
7. alleged benefit of children blowing bubbles, also attributed to video games
10. small (~5cm) sea creatures whose imploding bubbles serve as a sonic weapon to stun or kill nearby prey (can be up to 220db loud!)
11. bubble physicists create experiments to develop a ____ model that predicts the speed of air needed to produce a bubble in a soap film
13. used in comics to represent the unspoken
15. what holds bubbles all together
17. gum development that, paired with being more stretchy than standard gums of the day, was the genesis of bubblegum (two words)
18. in economics, a bubble exists when the price of an asset is over-inflated relative to this divergent metric

1. finance bubbles that grow, shrink, and sometimes pop
2. the fear of bubbles
5. biologic barrier that a well engineered series of bubble create transient gaps that molecules could then transverse
6. in simplest form, a bubble is ___ wrapped in soap film
8. chemical shorthand for a common gas dissolved in fizzy drinks
9. technological bubble that grew and burst between 1995-2001
12. pink is the most common color of bubblegum because originally it was the only food coloring ___
14. water-fairing WW2 vessels that would hide in sea creature beds to serve as a sound invisibility cloak
16. gas that creates the 'falling-bubbles phenomenon' in dark stout beer