Convection Currents

Using a small fish tank filled with water placed over a bowl of hot water and a bowl of ice, the convection currents can be seen using red and blue food dye.

A great demo for school science.

Category:

Education

Tags:

• convection
• physical
• science

[bigbangirl1005]

so the convection cells just keep going around in a circle?

[teacherAJH]

@bigbangirl1005 So long as there is a temperature difference in the fluid. In this demo, the water reaches an equilibrium temperature and ends up as a purple tank of water.

[munem939]

what happens if you do the experiment with red water and blue coloured oil?

[teacherAJH]

@munem939 Why don't you give it a try. I'd expect you'd have issues with the different densities of water and oil (oil floats on water), along with their miscibility (ie, not mixing together).

Love to see it, got to try to find out!

[ucpj]

the video is made faster than it is origiinal note this also.....

[teacherAJH]

@ucpj - Yes, this is true, if you try this demo it is slower. I sped up the footage to make it more interesting to watch.

[99booya]

YOU BETTER NOT PUT FISH IN THERE!

[Wattsnic000]

That's a perfect convection cell!

[MsUnstoppablyAwesome]

This is a very good example, well done

[DramaQueen032000]

Is this fast forward?

[LACandyLover]

We did that in Science...

[izovire]

I just posted a video response... it's a bit silly but it is another example of convection...

[himiker]

Anyone else see the Pepsi logo?