How to Make a BarometerSimple Barometer for your HomeHow to make a barometer. Find out a simple way to make a simple barometer for your home or classroom.After reading up a bit on barometers and pressure changes, you may want to learn how to make a simple one on your own. It can be a fun experiment and activity for you, your kids, or your students. If you haven't already, learn some more about what a barometer does. It can help you understand the experiment a bit more. Materials The materials you will need for this experiment are: - An empty jar or coffee can - A straw - Rubber Band - Plastic Wrap - Glue - Scissors - piece of notebook paper Once you have your container (empty jar or coffee can), you will want to put the plastic wrap over it. Make sure it's tight and straight. Next you will put the rubber band around the top of the container to keep it in place. Remember you must make it airtight so the experimnt will work correctly! After securing the plastic wrap around the container, get your straw. You will place the straw horizontally across the top of the container making sure about two-thirds of the straw is laying across it. You can use a ruler if you want to be extra precise 9but not necessary). After doing this, get your tape, and tape the straw to the top of the container. You don't need a large piece of tape, just something large enough to make sure the straw stays in place. Now for the piece of notebook paper. Arrange your homemade barometer so that it is against a wall. Tape the piece of notebook paper to the wall whaere the straw ends. You will use the piece of paper to mark your measurements. How to understand your homemade barometer As the air pressure changes from low to high and back again, the straw will slowly rise up and down over time. This is because the weight of the air is affecting the plastic/balloon which makes it go up and down. Lower pressure means bas weather is on the way, and high pressure means good weather is in store. You can also compare this to barometer readings you see on the television or online by local weather forecasters. Notes: Keep your barometer in a place that has a contant temperature as too many temperature changes can cause it to not work effectively. So windows are a no no.* This is a fun, quick, and simple weather activity that kids and adults will like. You will have your very own weather prediction center right next to you!! As a bonus, here is a video by Gary at ExpertExchange showing how to make a barometer: Back To Top of How to Make a Barometer Return to Severe Weather Fan Homepage
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