Today we met Emily and Allan from Science in a Van. We saw two experiments.
One was an optical illusion. We watch a twirling swirling picture and that made our brain think that something was moving. When it was moved away Emily looked really funny because our brains were still swirling and twirling.
Then Allan taught us about how sound moves. Vibrations move through the air. The sound vibrations enters our ears. Our ear drums vibrate and then our brain works out the sound.
He showed us how it works with a big whip. Boy it was loud!
This afternoon in Room VH we did an experiment with ice. We were trying to find out which ice melts the fastest. Was it a plain ice cube, an ice cube made of cordial or a ice cube made of sugar and water?
What do you predict?
We observed and drew pictures of what happened after 3, 6, 9 and 12 minutes. It was fun to count down!
Here are some pictures of our experiment.
Here is why we thought the plain ice cube melted the quickest.
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