Practical work: wind rose and humidity
Answers are for parents and teachers.
1
Make a table of wind directions for 5 days and draw a wind rose.
The most frequent direction appears as the longest line.
2
At +30 °C there are 18 g of vapour (maximum 30 g). What is the relative humidity in %?
60
3
Yearly precipitation is 400 mm and evaporation 2000 mm. How many times larger is evaporation?
5
4
Ask adults and write in which months of the year most precipitation falls in your area.
The answer depends on the place; in much of Uzbekistan precipitation is higher in late winter and spring and low in summer.
5
Why is more irrigation needed in summer than in spring?
Because evaporation is strong in summer and precipitation low, so the moistening degree falls.