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Say what... Magazine : 1611
Kym Moore Assistant Editor PAG E 12 Say what... Digital Magazine • Issue 35 • November 2016 • • http://saywhat.nz Weather science... With K ids Luckily for us, science isn't weather reliant, but it is a great boredom buster. This month I thought I would share with you some weather science. This experiment was shared with me by my daughter who did it in her class. You Will Need: • About 1⁄2 cup of water • Food colouring • A snap-lock bag in sandwich size • A snap-lock bag in snack size • Some tape • Ice blocks Method: • Into the snack sized bag, pour the water and the food colouring. Then seal the snack sized bag, and place it in the sandwich sized bag. Seal the outer bag. You can decorate the bag with the water cycle if you like and then put it up to a window. You can do this with tape or by pegging it to a curtain wire if available. • The bag needs to be near a window so it can get some sunlight. The snack bag with the water in it acts like a body of water. You could call it a puddle or a lake. As the sun hits the water over the course of a few hours, you will start to notice condensation towards the top of the snack bag. • The condensation represents the formation of clouds. You can talk to your kids about how clouds form in the atmosphere. The heat from the sun converts the water into steam which later condensates creating clouds out of a collection of water droplets. • From here, you can use the ice to create rain. Place an ice cube towards the top of the bag, and hold it there so that it starts to cool the droplets. This will make more droplets form, and as they start to run together, their increased weight will cause rain from the "clouds" in our little snack bag world. • If you forgo the ice, and run the experiment for a little longer, you will find that a cool night after a hot day will still cause "rain". This is a really cool way to show the water cycle that happens right here on Earth. It's easy to put together and fun too. Although I'm always pleased to see Spring, I also find it quite a frustrating time of year. We tend to see a lot of rain, which keeps us indoors more than I would like. This is especially true if Winter gave us cabin fever.