In our case where diameter of the funnel is 11.43 cm, 1 ml rain water collection would give h = 0.1 mm. Please email Gonzales@kpix.cbs.com, By viewing our video content, you are accepting the terms of our. Super simple rain gauge. I made these with the boys a couple of years back and they loved them. For example you can keep an aquarium in open with a scale pasted to it as a rain gauge. Place it in your garden or yard away from building and with nothing hanging overhead other than clear sky. September 22, 2011 By Emma Vanstone 19 Comments. Science Sparks ( Wild Sparks Enterprises Ltd ) are not liable for the actions of activity of any person who uses the information in this resource or in any of the suggested further resources. If you took your gauge off of the hanger it should look like three sides of a rectangle – two long and one shorter. This item measures 6"W x 3"D x 34"H and is made from cast iron with a glass rain gauge. The important part of recording the weather is that is needs to be done frequently. You will are just bending a wire to do that. Howcast shows you how to do this simple project in their step by step tutorial, so check it out! But it made me think – I need a rain gauge. Mine was a thicker hanger and the pliers definitely helped to get it started. We can now uncap the funnel and either collect water in a baker and measure volume of the water collected or measure it directly. Copyright © 2020 Science Experiments for Kids on the Foodie Pro Theme. BELL Garden Weather Station - Video 1: Rain Gauge - YouTube Then write in some numbers so you can easily see some of your major measurements (1/2″, 1″, etc.). I’m planning on printing out a sheet, or having a notebook where we can record the daily rainfall and have our own household annual rainfall recording. Hmm…over 8 inches. If you want to really impress them you could learn a few rhymes about the rain. we then have value of h in cm as (measured volume) * cm divided by the constant value. You need support on the bottom and around the sides, and you need a way to hang it up. then: h= (243/102.608)cm = 2.368 cm = 23.68 mm or rounding it to 23.7 mm, Suppose in the example given in the last step we made a mistake in measuring volume by 1 ml. There's no need to purchase a rain gauge if you looking for pure functionality. A makeover for the garden | Mummy..Mummy..Mum! A funnel is attached to one cap. On ground one should have at least 10 meter clearance from all the sides. Rain showers can be quite windy at times and you'll want to fasten your rain gauge somewhere so that it doesn't thrown off by wind. And the other cap is used on the second bottle. We must remember to convert the units properly, else we will get very absurd results. I started scouring the internet for how to make your own rain gauge, and some fairly complicated (or, at least, multi-step) plans came up, and even though some of them had sand in the bottom of the gauge to keep it from falling over, we get some crazy winds here and I was pretty sure that it would just fall over in the first storm and we’d have a mess. The gauge can measure up to 5" of rain. We would require a measuring cylinder that can read at least 1 milliliter of volume. It’s that simple! KPIX 5 Morning Weather Anchor Roberta Gonzales answers the questions you never get to ask on-air. Cut a long piece of duct tape and place it on the side of the gauge so that it creates a straight vertical line from the bottom of the bottle to the top. Can you design a table to record the results? Also, rain may be blown FROM or INTO the gauge by wind gusts accompanying the rain storm. Required fields are marked *, Signup to get new experiments straight to your inbox. Do you remember in Nursery when we thought about the rain and lots of rhymes with rain in them? Line the “0” of your ruler up with the bottom of the glass jar and mark with the sharpie every so often (I did every 1/4″). The gauge itself is simple. The mason jar I used has just a slightly smaller mouth than the sides but it’s close enough to give me a relatively good gauge of how much rainfall occurred. :). We put the markings on a spoon as they could lift them out to check, which was easier for them. ), A wide-mouthed glass jar (I used a queso jar), Pliers, or similar, to help you unbend the coat hanger. Take any clear container with a flat bottom. Wahoo! The plank was about 8 mm thick, 4 inch (10 cm) wide and about 5 feet (1.5 m) long (tall). In this instructable I discuss a simple rain gauge that is is essentially made from trash. we can easily measure the diameter of the the funnel mouth and get the radius by dividing it by 2. There are two ways to make the rain gauge, either by using an empty jar or a plastic bottle. The basic material need is a funnel and a measuring cylinder. Take a look at my picture of my white trash can and the measuring stick. We sealed the funnel to the cap using M-seal. We found a 40 x 40 cm and 18 mm thick water proof wooden board in our carpentry workshop. We, possibly, cannot claim that this would be a substitute for professional instrument but as you will see that it is quite accurate. Now suppose we read the volume to be 366 or 368 then we would get 'h' to be equal to 35.6697 (~ 35.7) or 35.8646 (~35.9). Your email address will not be published. Take any clear container with a flat bottom. We then placed it at some convenient place. Theory is, the gauge should be placed twice the distance as the height of … Cut the top off the bottle, and place upside down inside the main body. The cover can be locked to its black base. Therefore, all we have to do is to collect rain water using a funnel, measure the volume of of water collected in it and then divide by the constant above to get the rain fall measure. Bend the long side up so it runs parallel to the hook part. These activities are designed to be carried out by children working with a parent, guardian or other appropriate adult. Theory is, the gauge should be placed twice the distance as the height of the closest obstacle. The denominator in the equation is, therefore, a constant. Your email address will not be published. If you do not have a good measuring cylinder at hand you can use two identical small bottles. We do not intend to infringe any legitimate intellectual right, artistic rights or copyright. TIP: Break the ruler in half to better fit inside the jar. Occasionally the rain fall is also reported in centimeters or in inches. Take a ruler or tape measure and place inside the jar against the bottom and you can either leave the ruler in the jar or mark off your measurements. I had griped about the rainfall measurements on facebook too and one of my cousins mentioned that I should just make one as a project with the kids – that was enough for me! This is the first of a series of weather science related posts. We did a bottle outdoors to see how much rain… it filled all the way up. This is amazing, I really wanna make this.thanks for sharing this. All the vessels will collect rain water to the same height 'h' as shown below. For our rain gauge we used 100 CD/DVD cake box with its spindle removed. This value is not going to change, value of pi is also constant (you may take is a 3.142). The part underneath your gauge is what will be the bottom part of your gauge cradle. We then drilled hole in the cap of the small bottle to fit in the funnel. Granted, I placed the trash can outside before the rain began only to gather water. Share it with us! I did find one website that has people self-report rainfall, and the estimates in my area were more in the 1″ range. You can find out how to make one by clicking on the link here https://www.science-sparks.com/weather-make-a-rain-gauge/ […], Your email address will not be published. More sophisticated rain gauges have electronic devices to automatically record rain fall. The adult involved is fully responsible for ensuring that the activities are carried out safely. The shorter one, again, is the bottom of the cradle. What the rainfall measure is telling us is the height of rain water collected in a vessel that has vertical walls and has uniform cross section from bottom to the top. One of the bottle could be cut to fit inside the cake box to serve as vessel for collecting rain water. Also a lot of dirt, like leafs etc. That being said, we’ll probably need to move ours up so the gauge itself is near the top or over the fence so the fence board itself isn’t blocking rain. It really is not too tough. Volume is measured in milliliter and the rain fall is given in millimeter. Take a ruler or tape measure and place inside the jar against the bottom and you can either leave the ruler in the jar or mark off your measurements. Occasionally the rain fall is also reported in centimeters or in inches. Notify me of follow-up comments by email. We didn’t bury ours very well, you might want to put yours further into the ground. You now have a rain gauge! So if I have a trash can or bucket with straight sides, which means it is not narrow at the bottom, my rain measurement would be fairly accurate. Thank you so much for linking up to The Sunday Showcase. My son would so want to do this! You can switch off these cookies easily if you wish. Now you can start to make the “cradle” for the gauge. A rain gauge is a cylinder-shaped receptacle that a gardener anchors into the ground either with a stake driven directly into the ground or with a post driven into the ground. Rocks are in the bottom to keep it from […], […] How to Make a Rain Gauge (Science Sparks) […], […] Make a Rain Gauge from Science Sparks […], […] Record and study the weather using a homemade rain gauge. Not to use as an official “rain gauge,” but I became curious! thank you for the idea and instructions!! The stake has two prongs to make keeping it in … One of my DIY activity - astronomy and telescope making took me on a path to join professional body of astronomers. There’s no need to purchase a rain gauge if you looking for pure functionality. You have successfully joined our subscriber list. If you want to build your own rain gauge the National Oceanic and Atmospheric Administration (NOAA) has created an instruction list for you here. I had to keep sliding the gauge in and out to make sure that it fit snugly in the wire, but not so tight that I couldn’t get it out again. Don’t forget to record the results and empty it every […], […] Use a rain gauge to measure how much rain has fallen. This could be a kind of luxury for schools in metropolitan cities. Then I found this idea from the Franklin Institute website. In next two steps we will see two models of rain gauge. The official gauge is across town, and apparently the storms missed that area. As you can tell, my fence has seen better days so I didn’t feel too bad about hammering it into the board directly. What I learned from the National Weather Service is, when placing your rain gauge outside your home, make sure the rain gauge is not blocked by nearby obstacles (trees or buildings) making your rainfall total lower than what it should be. This is a wonderful project for any group of people. There are plenty of opportunities for learning about measuring, number recognition, capacity and weather along the way too!

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