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Science

Autumn Term.

We have a real WOW start to our Science topic on States of Matter!! We made a special liquid that actually felt like a solid when we touched it! We got very messy but it was lots of fun!! 

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We thought of lots of questions that we want to investigate and find the answers too...
We also began to think about what a solid, liquid and gas was. We sorted some articles into categories and then described what they had in common. Shiven said that solids were hard, Oliver said they were strong and Jessica said that they didn't change shape. When we compared all the liquids, Gabriel said they all spread out and pour and Alfie said they always go to the bottom of the container. Finally, when we looked at the gases, Unaisah said that all gases could be squashed and Lewis said that they spread out everywhere!
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To tie in with our Harvest theme, we did some cooking and baking using apples and chocolate. We investigated how chocolate melts through heating it and how the particles begin move apart. We made apple muffins and looked at how the solids ingredients turn into liquid when they were mixed together. After we put them in the oven, the mixture had turn back to a solid. We thought this was because the heat had caused the liquid to evaporate. We put the rest of our harvest apples to good use and dipped them in our melted chocolate! They tasted delicious! We had lots of fun and learnt a lot too! 
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We wanted to know if gas weighed anything. We set up experiments using 5 different fizzy drinks. We weighed the drinks at the start and again once the drinks had gone flat. ALL THE DRINKS WEIGHED LESS!! We knew this meant gas must weigh something. Some drinks weighed less than others. We knew that this must mean some drinks were fizzier and had more gas in them to start with.
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We have had a great time exploring water...we have done lots of investigations and observed how magic it is!!! It can go from a solid to a liquid to a gas and back again!!
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We also explored how temperature effects the rate of evaporation. We hung towels in different places in school that had different temperatures. We made sure that the test was fair by only changing the location and making sure that the towels, their size, the amount of water on them and the time that they were left for were all the same. That way we knew our results would be accurate. We weighed the towels on digital scales when the water was added to the towels and again at the end of the experiment to see how much water had evaporated. 
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We learned that the hotter the temperature that the towel is in, the quicker the water evaporates from it. We used what we knew about the particles in a liquid to understand that the warmer the temperature is the more heat energy the particles in the liquid get and the more they move. They break their bonds from each other and escape as a gas!
To end our topic we have had lots of fun investigating the water cycle. In pairs we made mini water cycles in a zippy bag using some water with blue food colouring in it. We drew the water cycle on the bag and will now observe what happens over the next week or so. Here are a few pictures of what we have done so far.
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