Reef Chemistry Puzzle #13 I'm shrinking....

[Randy Holmes-Farley Verified Community Expert]

Reef Chemistry Puzzle 13

As I move through the water of a reef aquarium, I am smaller when I am near the bottom.

What am I?

Good luck!

Previous Reef Chemistry Puzzle:

https://www.reef2reef.com/threads/reef-chemistry-puzzle-12-water.1027279/








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[jda]

Gas

 

[MBruun]

A nitrogen boble

 

[Reefkeepers Archive]

I don't want to say wavelengths again but I do know what red wavelengths (longer wavelengths) get absorbed much quicker than blue/violet wavelengths which are smaller

 

[TokenReefer]

O

 

[Borat]

A sheet of Nori that's been dropped into a tank with Tangs?

 

[Reefering1]

Water molecule

 

[Randy Holmes-Farley Verified Community Expert]

I don't want to say wavelengths again but I do know what red wavelengths (longer wavelengths) get absorbed much quicker than blue/violet wavelengths which are smaller

It is a similar question to the wavelength one, but different thing and different reason. :)

 

[Reefkeepers Archive]

It is a similar question to the wavelength one, but different thing and different reason. :)

Could it still be technically correct? :)

 

[Randy Holmes-Farley Verified Community Expert]

Could it still be technically correct? :)

yes, unless there is more light coming from the sides or bottom (as might be the case with lights off in the evening but room lights on).

 

[Mschmidt]

The odds That sps will survive in my tank.

 

[rhitee93]

PAR level?

 

[KrisReef]

Dissolved gas molecules, but not very easy to measure with a school ruler.

Edit, actually, a gas bubble in solution will shrink with pressure as it goes lower but it doesn't normally go lower unless it's being pulled down with water motion.

 

[Court_Appointed_Hypeman]

Gas or disolved gasses was going to be my guess.

Or carbonic acid as my guess would be the concentration is higher at the top of the water, but idk if that counts as smaller even if that assumption is correct.

So I am going to have to say gasses

 

[Slocke]

A blob fish/anything which contains gas. That’s how pressure works. PV=nRT

Blobfish in deep water:

Blobfish at the surface:

 

[Kmst80]

Oxygen bubble?

 

[907_Reefer]

Trick question, everything on the bottom looks smaller if you view from the top ;)

Carry on..

 

[RelaxingWithTheReef]

The weight of the water increases the pressure as the depth increases. The increased pressure reduces the average distance between gas molecules.

I’m guessing you are the average distance between gas molecules.

 

[dennis romano]

Air bubble

 

[Randy Holmes-Farley Verified Community Expert]

And the answer is...

As I move through the water of a reef aquarium, I am smaller when I am near the bottom.

What am I?

Air bubble! Gas or oxygen or anything like that fits as well. Great job folks!

Average distance between molecules in a bubble also is correct.

Don't know about the blobfish, but maybe. lol

Par also goes down. Should have had a second clue about it increasing as it goes back up to rule that sort of thing out. lol