How to measure the precipitation of a snow?

Use a special precipitation measuring cup to measure precipitation.

Precipitation is the basic feature of weather and an important record element in "weather calendar". Students have tried to observe and judge rainfall with their senses since childhood: light rain, moderate rain and heavy rain. There will be some errors in this method of judging precipitation with sensory organs, which leads to the rain gauge as a tool.

This lesson lets students know how meteorologists measure, record and determine rainfall. In order to stimulate students' interest in observing precipitation and understand the working principle of rain gauge, this lesson allows students to make a simple rain gauge and use it to measure and record precipitation.

Students have some life experience in weather phenomena and know that rain is a form of precipitation, but it is difficult to understand that snow and hail are also precipitation. Making a simple rain gauge seems very simple. According to the students' practical ability and learning and understanding ability, there will be some errors in making rain gauges, especially the alignment position of 0 scale is difficult to operate.

It is difficult to unify the horizontal height and liquid level of the line of sight when reading, which leads to inaccurate measurement of precipitation. Precipitation is an important feature of weather. Precipitation includes two parts. First, water vapor in the atmosphere condenses directly on the ground or the surface of objects and at low altitude, such as frost, dew and fog, which is also called horizontal precipitation. The other part is water vapor condensate falling from the air to the ground, such as rain, snow and hail.