There's always the old "What Obejects are Conductive?" Get a battery (the big lantern batteries are best), attach a wire from the negative lead* to a lightbulb. Run a second wire from the bulb to the other lead, but cut it. Wrap the two cut ends of the wire around a couple of nails and space the nails a bit apart. Then take different objects, touch them to both nails and see which ones light the light.




*[size=1]I think that's the right way to do it safely, you'll want to double check that though[size]

Dude! You gave away the answer.

But yeah, that's how you do it. Provide a demonstration of water draining in both directions along with a poster board explaining the Coriolis effect and why it is a massive force that is too weak on such a small scale (without the math, presumably).

Go way out on a limb and find an online pen pal to a web cam demonstration of the same mixed results from the southern hemisphere.

You could use a lighter, it's just not as fun as using a blow torch :evil:

That's how I learned hamsters are conductive.

A number of places sell mini butane torch's.

Very handy in an amazing number of circumstances.



(Don't ask about the hamster)

And then you can use it for making creme brulee (or bananas brulee, in our house.)

Wait, are you saying you'd invite me into your home. With a blowtorch?

*sniff*

I'm touched.

Or lighting a crack pipe.

What other reason does one need to buy a blowtorch?

I'm just amused that Alex said "Dude!"