Sprinkler Experiment by Grace

Here we are warming up our brains playing challenging games against people from other rooms. 

Grace brought along a water bottle fitted with a straw for her Sprinkler Experiment.

She had cold water inside the bottle and then sat that bottle inside a jug of boiling water.

Grace hypothesised that as the pressure inside the bottle heats up as the water gets warmer... the water will come out the top of the straw like a sprinkler.

When she first did the experiment nothing happened but Aliyah told us all to have some patience. As we waited the cold water inside the bottle slowly heated up and the water started to drip out of the top of the straw. 

We kept waiting and watching... it didn't actually start to spray out like a sprinkler but the longer we waited the more the drips speed up.

We think the heat acted like a catalyst to speed up the drips. The hotter the water in the jug the faster it would heat the cold water in the bottle.

Thanks Grace. Mrs Maw has been so impressed with the way everyone has self managed this activity.

The only person we are waiting for now is Blake. He will bring his experiment ( or a video of it) with him to TAG in Term 4.

Aaliyah's Water in a Bag Experiment

Aaliyah brought along an experiment that used a plastic bag filled with water and some pencils.

Her hypothesis was that if she poked pencils through the bag no water would leak out because there would be friction around the holes which would seal them around the pencil.

She did the experiment and only one hole leaked a tiny bit.

An excellent experiment Aaliyah!

We are looking forward to Blake and Grace's experiment next time!

One experiment and one scientist - Thanks Margo and Georgia !

 Margo brought along an experiment with lots of scientific equipment she could teach us the names to.

She had a beaker, a test tube, a pipette, a drip tray, a scoop.

Her hypothesis was that if she combined vinegar and baking soda there would be a reaction ( explosion) and gas and liquid would bubble up out of the test tube over into the drip tray.

She was right!

She repeated the experiment in a larger container with more baking soda and vinegar and she hypothesised that the reaction would also be BIGGER - she was right again.

We talked about how after an experiment the things in the experiment have changed and aren't still vinegar and baking soda... so you couldn't reuse the vinegar and pour it in with the unused stuff or it would not work.

We also talked about some ways to speed up an experiment - stirring, shaking, heating up or adding a catalyst because Margo tried stirring the leftovers to make it speed up and it did work.

Wow that was lots of science words!

Georgia has studied a famous scientist Rosalind Rosevelt.

Rosalind took the first photo of DNA  which showed its structure and found out all about it.

Georgia had prepared an amazing powerpoint which she had timed exactly to her words.

She also had colour photocopies of the structure of DNA for us to look at up close.

We thought we learned flash words with Margo... then Georgia taught us Deoxyribonucleic acid!

Bradley also tried his experiment at home before he shared it with us.

Here are his results

Press this link to see his PowerPoint https://docs.google.com/presentation/d/1xmiKFQWOIGTcRKIqvE8PbFwBw9t3lo_DTM86XEBz2JQ/edit#slide=id.p1