"How Much Will It Rain?" What will the weather be like tomorrow PPT courseware 2

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"How Much Will It Rain?" What will the weather be like tomorrow PPT courseware 2

When it rains, how do you know how hard it is?

Rain has a great impact on our lives. You can only roughly know how heavy the rain is by seeing and hearing it with your ears. If you want to know exactly how heavy the rain is, think about it. What can you do?

In order to know how much it rains, what kind of container should be used to measure the amount of rain?

Do you know how precipitation is measured in weather forecasts?

Rain gauge: an instrument for measuring precipitation

do you know?

The height of the rain in the rain gauge represents the amount of rainfall. If the measured height is 17 mm, it means the amount of rainfall is 17 mm.

Make a rain gauge and test it

Cut the shoulder of the plastic bottle and remove the bottom.

Attach a ruler to the side of the bottle and a layer of clear tape.

Place the cut top of the bottle upside down on the bottle.

Pay attention to safety when making and don't hurt your hands.

think

Does the diameter of the rain gauge affect the measurement?

Is it okay to use rain gauges of different sizes to measure precipitation?

Measuring precipitation has nothing to do with the thickness and size of the rain gauge used. What matters is the height of the rain in the gauge.

You can pour some water into the unscaled part of the simple rain gauge first.

Expand knowledge

1. When collecting rainwater using containers with different diameters, they should be placed on a flat and open ground; for the convenience of observation, use a transparent container to directly measure the height of the water with a ruler.

2. When measuring rainfall, the measurement time should be recorded in order to compare the magnitude of the rainfall.

3. Use a simple rain gauge to measure rainfall. The location of the rain gauge will not affect the height of collected rainwater, but you should pay attention to whether there will be water droplets splashing or dripping from the eaves, which will affect the accuracy of the measurement.

What is the relationship between rain and human production and life?

Answer: Advantages: providing necessary moisture to plants, alleviating drought, purifying the air, and maintaining air humidity.

Disadvantages: inconvenient transportation, flooding, mudslides and other natural disasters, endangering human life and economic losses.

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"How Much Will It Rain?" What will the weather be like tomorrow PPT courseware:

"How Much Will It Rain?" What will the weather be like tomorrow? PPT courseware. Do it. Steps to make a simple rain gauge 1. Find a straight transparent cup (or drink bottle) with a height of more than 15 cm. 2. Use a ruler to draw a scale on the paper, in millimeters. 3. Stick the paper strip vertically to the cup...

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Update Time: 2024-11-20

This template belongs to science courseware E-education edition fourth grade science volume 1 industry PPT template

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