How to make a homemade rain gauge

Among the most widely used devices in the study of weather around the world, we have the famous rain gauges. The main purpose of these devices is to measure the amount of rain, hail or snow that falls in a given place in a given period of time. In this article, we will look at how to make a homemade rain gaugeThis is an interesting experiment to present at a science fair, and it can be used to measure the amount of rainfall at a given site, in millimetres of altitude.

rain gauge

Materials

- A flat-bottomed glass or crystal container.

- A plastic funnel of the same diameter as the mouth of the container.

- A labelled ruler.

- A notebook

Assembling our home rain gauge

We will start by preparing an itinerary for our rainfall measurements. To do this, we will take notes (in a notebook) for different days. It is advisable to make a sort of table with all the days of the week or month, depending on the extent of our study. Once we have made our data collection table, we are ready to carry out the experience individually.

homemade rain gauge

Now, we take a glass container and place it in an open place at a certain time, with a plastic funnel attached to the mouth of the container. It is recommended in the morning so that the container can collect all the moisture and precipitation that falls during the day.

The next day, using a labelled ruler, we measure the millimetres of water that have been collected during the day. Then, we empty the container and place it again for the next measurement. In this way, we repeat the experiment as many times as we have stipulated in our data collection table.

homemade rain gauge

Once all the measurements in our table have been completed, we proceed to make a graph where we place the days on the X axis and the millimetres of height on the Y axis. In this way, we will be able to visualise the variation in rainfall for each day of the study, as well as calculate the average rainfall during the study period, data that will be useful for presenting a report.

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