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Science birthday party

Posted on: Thursday, 30 July 2015 @ 11:17am
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One of JJ's friends recently hosted a science themed birthday party for his 7yo, complete with science experiments.

First up was lemon batteries.  They had fun poking various pieces of metal into the lemons and then tried to light a small LED from it.

8yo and 6yo with lemon batteries

Unfortunately the lemons didn' put out enough power to light the LEDs on thi occasion (it had apparently worked when JJ's friend was testing out suitable experiments for the party).  They moved on to the next thing while JJ used a metal coat hanger to skewer some of the lemons into a parallel to see what kind of charge he could get and apparently we'd need quite a lot of lemons to get one small LED to turn on.

Next up was fun with dry ice, more specifically sticking in balloons that had been blown up a little bit into a bowl of the stuff and watching them expand in the bowl.

10yo and 8yo sticking balloons into dry ice

And then leaving them in a corner of the garden out of the way of where everyone was playing or conducting science experiments to eventually pop.

Expanding balloons about to pop

Next up were hovercrafts comprising of balloons, pop top lids and old cds.

Balloon hovercrafts

The kids had fun making the hovercrafts but unfortunately the glue didn't set quickly enough so instead of floating the cd when the air was let out of the balloon, it propelled the pop top off.  I was off doing something else during this experiment otherwise I wonder if making rockets instead would have worked, though that would have been slightly more hazardous!

Then there were lava lamps with pop top bottles:

Pop top bottle lava lamp

And more fun with dry ice, this time JJ's friend let the kids heap in the dry ice (with their oversized adult kitchen gloves) and a film of detergent was wiped over the top and we watched gases building up inside the bubble and how big the bubble could get before it popped.

6yo pulling evil scienist face while prepating to pop his giant dry ice bubble

Evil scientist 6yo decided he was going to pop his before it could get big enough to pop because that's how he rolls.  The experiments ended with dropping mentos into diet cola.

Dropping mentos into diet cola

Because what else would you do with that kind of stuff other than make a huge fun mess?

What happens when you add mentos to diet cola

Fun was had by all and it's always a great theme for a birthday party!

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