Our current Astronomy lesson is on our lovely planet, Earth. It covers a lot of material about why our planet is so perfect for us. (Like Someone designed it that way.) One of the things we talked about was the layers of our planet. One layer, the outer core, is made up of melted metals like iron and nickel. This is the layer that creates our magnetosphere. Without our magnetosphere life couldn’t exist on earth, it protects us from solar winds. Our project was to make a compass, something we’d never done before. We magnetized a needle and floated it in some water.
At first I couldn’t figure out why our needle kept floating to one side of our lid. I thought our lid must not be flat so we tried it in a tub to see what would happen. It still kept moving to one side. Finally I realised our magnet was too close! After I moved the magnet away it all worked just fine. We could turn the needle and watch it find its way back to north.
(We had a pyjamas day today!)
If you’d asked me before we did this I would have had to picture in my head where we see the sunset each night before I could have told you which way was north. Guess I haven’t lived here long enough for it to become ingrained. 🙂