Make a lava lamp

Before you read this post, I have a confession to make.  I have a school girl crush on Steve Spangler.  He's so dreamy and he makes science fun.  How can any person resist? *Sigh*  Mind you, this isn't my first school girl crush.  Back in grad school I thought my stats professor was super brainy and super dreamy too.  *Double sigh*

Ok... moving on...  Last week Baby Chuck and I made this lava lamp using directions from Steve Spangler's super awesome website.  Doesn't it look cool?

 Here's what it looked like when put a flashlight behind the bottle::

Whoa- swirly sci-fi effects

Want to make your own lava lamp?  (Come on, I know you do!)  If so, read on, fellow crapter!

Materials:
- empty bottle and cap (we used a soda bottle) <-- crap!
- vegetable oil
- water
- dark food coloring (we chose blue)
- alka-seltzer tablet (divided into smaller pieces)
- flashlight (optional- for alien effect)

Directions:
1.  Fill your bottle 3/4 full with vegetable oil.  Then, pour water into the bottle until it's almost full.  Make sure to lave enough room at the top of the bottle for the alka-seltzer reaction, otherwise liquid will spill out.
2.  Add 10 drops of food coloring.  (Watch the water turn a different color as the oil remains the same.)
3.  Drop your alka-seltzer pieces one by one into the bottle and watch the water bubble and fizzle.
4.  (Optional:  Put a flashlight behind the bottle and turn off the lights to see sci-fi alien effect)
5.  Once you've dissolve all your alka-seltzer pieces, screw the cap on and tip the bottle back and forth.  Watch the water and oil roll around.  Feel relaxed.