Experiments night (Feb 11)
And now for the science bit... The Beavers spent an evening of molecule mayhem exploring chemisty, gravity, our bodies and all manner of scientific fun.
What happens when you warm up a Beaver? They run around. And warmer still? Even more running. Well, that's the same as molecules, and we proved it. But when the molecules get colder they group together, and so did our Beavers - cue big group hug (ahhh!).
After that the Beavers saw what happened when you put raisins into a glass of lemonade - dancing raisins! They managed to work out it was the little air bubbles collecting on the raisins, lifting them up, then popping and dropping down again. Then repeat until lemonade goes flat, or Finlay and Francis drink it all.
Some curious experiments followed involving our body: try this one at home - Lift your right foot a few inches from the floor and then begin to move it in a clockwise direction. While you're doing this, use a finger your right index finger to draw a number 6 in the air. Your foot will turn in an anticlockwise direction and there's nothing you can do about it! Answers on a postcard to... or just ask your Beaver! They now know it all.
Gravity and forces were explained through bouncing balls and sucking up water through straws, which had the added advantage of teaching the Beavers some bad table manners.
Then it was on to the favourite event of the evening - the volcano experiment. After carefully pouring the base mixture into several bottles, vinegar was added and am impressive fountain of gurgling, bublling stuff came pouring out of the top! Hooray! They loved it and, following many requests from your Beavers, we said we'd put the instructions on the website. So here they are (time to raid your larder...):
- Fill a bottle about two thirds with warm water.
- Put a little washing up liquid in the bottle.
- Then put about 2 tbsp of baking soda in the bottle.
- Then pour vinegar into the bottle and wait for the eruption!
The baking soda (sodium bicarbonate) is a base while the vinegar (acetic acid) is an acid. When they react together they form carbonic acid which is very unstable, it instantly breaks apart into water and carbon dioxide, which creates all the fizzing as it escapes the solution.
You can also see a video of how to do it at this website
Lots of science learned, and lots of fun too!