Whizz Pop Bang-Plastics and Spring

IMG_7508This month’s edition is all based around the emergence of Springtime, and what that brings with it.  Plus a section on plastics.  We have started with the plastics section.  We learnt all about their structure and various types, and how they are used by reading the articles.  Then it was time to put these facts to the test.  The first fact was looking at the plastics being made up of lots of long tiny strings called polymers.  We were going to put to the test how these polymers give plastics their amazing properties.  We grabbed a freezer bag, filled it with water, and then poked sharp items through it, such as cocktail sticks and pencils.  They were then left in place.  It amazed our little lady how the bag did not spring a leak until you removed the items.    She was learning that the sharp tips were pushing the string like polymers aside instead of breaking them, and then, because they are stretchy, they remould around the item forming a seal.  Next task was to make some plastic of our own from milk and white wine vinegar.  It could then be moulded into a shape, before hardening overnight.  We did make it, but it was a little too crumbly in consistency to mould, so we are going to have a second go at it.  We do now though have a hardened lump sitting on the side in the kitchen :-).


We had a couple of plant growth experiments to do as well.  One called topsy turvy growth, the other one being called stop motion.

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The topsy turvy experiment, with a bean seed planted in a clear cup around serviettes in the middle, allows you to see the bean germinate and then after a few days growth you turn the cup the other way up.  As the bean senses it is growing the wrong way, it then alters its direction.  This can be repeated a few times.

The stop motion bean pots, have the bean planted inside a loo roll inner filled with compost, then placed into a clear cup again surrounded by tissue.  A second bean is then planted between the tissue and the cup.  Every 2 days you add another bean seed into the cup, keeping both compost and tissue damp.  After a week or 2 this will enable you to see the different stages of the germination process.  Our beans will be with us for a while, joining the caterpillars on the kitchen table. With the next edition of Whizz Pop Bang on its way, I had better publish this post!!

Plastic fantastic science, plastics science, plastic science, plastic experiments, whizz pop bang, www.mammasschool.co.uk

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