How to make a simple rain gauge, how to make a simple rain gauge in Grade 3 Science and precautions?

1. Find a straight transparent cup with a height of more than 15 cm; 2. In millimeters, use a scale ruler to draw a scale on the paper strip, and the length of the paper strip is slightly less than the height of the straight cup; 3、

Take a piece of scotch tape that is longer than the graduated paper strip and lay it flat on the table, the glue side is facing up, and stick the graduated side of the paper side down in the middle of the tape; 4、

One student holds a cup, and the other student sticks the scotch tape glued to the outside of the cup vertically, so that the bottom of the scale is exactly aligned with the bottom of the inside of the cup.

1. Tools and materials for the production of direct measurement rain gauges.

1. A flat-bottomed plastic bottle as large as possible, you can use a "Golden Dragon Oil" bottle, etc., and it is best to use a ready-made Mingsheng liquid cylinder.

Scissors. 3. Ruler (you can use the ruler provided in the manual).

4. Scotch tape.

Short steel bars, etc. (for anti-blow-down fixing).

2. Tools and materials for the production of graduated drum rain gauges.

Funnel: a plastic funnel with a slightly larger diameter;

a plastic bottle slightly smaller in diameter than a funnel;

Straight-barreled plastic measuring cylinders in the laboratory;

transparent tape, etc.

The method and process of making rain gauges.

Cut off the conical part of the upper part of the bottle, it is best to draw a line before cutting, and try to cut it straight at one time;

The cut conical part is turned upside down in the bottle to form a funnel. Tape the funnel with.

The bottle body should be fixed so that it is firm, and the mouth of the water container should be kept level and smooth.

Use tough paper to draw the scale, the minimum is 1 mm per grid, or you can cut out the scale provided in the text and paste it. Then use scotch tape to attach the scale to the bottle in its entirety to prevent it from getting wet.

It is also possible to use a sharp tool such as a knife to engrave the scale directly on the bottle to repaint the visibility.

If you can't find a flat-bottomed plastic bottle, you can also use a bottle with an uneven bottom, but when using it, add some water to the bottom, the water surface is higher than the raised part of the bottom, until the bottom is level, and when pasting the scale paper, the position of "0" should be aligned with the horizontal side.

The rain gauge is a tool to measure the volume of rainwater per unit area (1 square meter) in the 24-hour period of the day.

In the summer, it rains more than usual in the south, so take precautions. We usually say that the rain is heavy or light, and the technical term is to use the amount of rainfall to balance.

The depth of the water layer that falls from the sky to the ground, and the depth of the water layer that accumulates on the surface of the water without evaporation, infiltration, or loss, is called rainfall (in millimeters), which can visually indicate the amount of rainfall.

At present, the commonly used instruments for measuring rainfall include rain measuring cylinders and measuring cups. The rain gauge is generally 20 cm in diameter and contains a funnel and a bottle. The measuring cup has a diameter of 4 cm, and it is used with a rain gauge.

When measuring, pour rainwater from the rain scale into a measuring cup, and you can know the amount of rain for the day according to the scale on the cup.

China Meteorological Administration regulations:

The rainfall within 24 hours is called the daily rainfall, where the daily rainfall is less than 10 mm is called light rain, millimeters are moderate rain, millimeters are heavy rain, heavy rain is millimeters, heavy rainfall is millimeters, and more than millimeters are called extremely heavy rain.

For us ordinary people, there are generally no professional rain gauges and measuring cups, so what should we do? We can also make one ourselves.

Take a disposable plastic or paper bowl with a diameter of 20 cm (you can choose a suitably sized instant noodle paper bowl), cut a small hole slightly larger than a corn kernel in the bottom of it, and place the bowl on a jar without a lid.

There is a glass bottle inside the jar, and the mouth of the bottle is connected to a small hole in the bottom of the bowl. The simple rain gauge is ready. Once the simple rain gauge is ready, it can be placed at a height of 70 cm above the ground (the distance between the mouth of the cylinder and the ground) to receive rainwater.

When the rain stops, weigh the water in the bottle on a scale, and 30 grams of water is equivalent to 1 millimeter of rainfall.

The overall structure of the rain gauge is made of wood barrel metal parts without rust, the inner wall should be smooth and round, and the cutting edge of the water bearer shall not have defects such as burrs or bumps, and the appearance is beautiful and generous, with good weather resistance and longer service life.

The common rain gauge shell is a metal cylinder, divided into two sections, the upper section is a water funnel with a diameter of 20 cm, in order to prevent rainwater splashing and loss, maintain the area and shape of the container mouth, the cylinder mouth is made of hard copper into a knife blade shape with a straight inside and an oblique outside; A water bottle is placed in the lower section to collect rainwater.

To measure, rainwater is poured into a special rain gauge and the number of millimeters of precipitation is read. In the snowfall season, take out the water storage bottle and replace it with a barrel without a funnel, and the snowflakes can be collected directly in the rain gauge and read after the snow melts, or the snow can be weighed and converted into millimeters according to the area of the cylinder mouth.

Details:

How to use the rain gauge of the ground meteorological instrument

1. Before using the built-in battery, the internal rechargeable battery needs to be charged, and the supplied power adapter plug should be inserted into the power input jack on the rear panel of the instrument when charging. Then connect the power supply to only 220V power supply, at this time the "charging" indicator light is lit (the charging time is about 5-8 hours) when the "Complete" indicator light is lit, it means that the battery is sufficient and can be used normally.

2. Choose an open and flat location to build a cement platform, and embed three fixing screws on the platform according to the three fixed foot holes of the rain sensor (if installed on the roof or the existing cement platform, it can be directly punched and expanded screws to fix), and then the rain sensor is firmly installed.

3. When using, press the power switch on the back panel of the instrument, the LCD screen will light up, and it will turn into the normal measurement state after displaying "8234 rain gauge", and the gap between the status indicators will be flashing, indicating that the instrument is in normal working condition. At the bottom of the display is the current time (date time) and the current rainfall value.

The subtotal value on the left is the statistical value of the day's rainfall, the total value is the total rainfall value from the instrument to the current time in the current month, the rainfall curve on the upper right, the x-axis is the corresponding time, and the y-axis is the corresponding rainfall value. The instrument must be continuously turned on during normal use, and the total rainfall is the rainfall statistics at the 24th hour of each day before the current date.

4. Introduce the sensor cable into the room and insert it into the signal input socket behind the indoor host.

How to draw a rain gauge, the method is as follows:

Start by drawing a rectangle;

Then draw a scale on the difficulty-resistant rectangle, and you're done.

Let's share the process of making my own rain measuring device.

First of all, open the scientific tools, take out the materials for making the rain measuring device, scissors, oil-based pens, plastic bottles with the same thickness as the top and bottom, rulers, sticky tape, ink, and cardboard, and start making the rain measuring device.

Step 1: Draw a straight line along the shoulder of the plastic bottle, then cut it along the straight line to make the mouth of the bottle commensurate with the bottle itself.

Step 2: Draw the scale on the cardboard piece one by one according to the ruler, dilute a little ink into the bottle, and mark the 0 scale according to the level of the ink.

In this way, the rain measuring device I made myself is finished, isn't it very simple? Then I put the rain measuring device on the lawn in the back garden of our community, waiting for the rainy season to come.

Summary. You can use a plastic bottle with a cylinder in the middle as a rain gauge. Notes:

Every time you use a rain gauge to measure rainfall, make sure that the water surface is level with the zero scale. The following is an introduction to the production method of a simple rain gauge for reference, first prepare the materials: plastic bottles with a cylinder in the middle, scissors, knives, double-sided tape, scale paper, and water.

1. First prepare a plastic bottle with a cylinder in the middle, and then paste the double-sided tape to the upper end of the cylinder.

2. Use a knife to cut the plastic bottle along the double-sided tape.

3. Use scissors to repair the incision neatly.

4. Put the upper end of the plastic bottle with the mouth facing down and put it on the lower end of the plastic bottle.

5. Stick the graduation paper vertically to the surface of the plastic bottle.

6. Put an appropriate amount of water in a plastic bottle to make the water surface level with the zero scale of the scale paper.

How to make a simple rain gauge and precautions for Grade 3 Science?

You can use a plastic bottle that is a cylinder in the middle to make a rain gauge. Note: Every time you use a rain gauge to measure rainfall, make sure that the water surface is level with the zero scale.

The following is an introduction to the production method of a simple rain gauge for reference, first prepare the materials: plastic bottles with a cylinder in the middle, scissors, a grinding nuclear knife, double-sided tape for the answer book, scale paper, and water. 1. First prepare a plastic bottle with a cylinder in the middle, then stick the double-sided tape to the upper end of the cylinder 2, use a knife to cut the plastic bottle along the double-sided tape 3, and use scissors to repair the incision neatly.

4. Put the upper end of the plastic bottle with the mouth facing down, put it on the lower end of the plastic bottle 5, stick the scale paper vertically to the surface of the plastic bottle 6, and put an appropriate amount of water in the plastic bottle to make the water surface level with the zero scale of the scale paper.

Are there any other confusions.

Outer Jane and Inner Jane, one funnel.

Prepare a paper cup, a cotton thread. Soak the cotton thread in water first, and then make a small hole in the bottom of the paper cup, just the size of which can poke the cotton thread in.

Let the rainwater pour in sufficiently.

Grade 3 Science How to Make a Simple Rain Gage and Precautions is 5.

What does your simple rain gauge look like? Draw it and talk about it in simple language, what should you pay attention to when making it?