You will need
• thermometer;
• - observations;
• calculator.
Instruction
1
To perform the tasks of calculating daily average ambient air temperature spend several dimensions. What kind of thermometer to use depends on the purpose. For a school lesson ordinary alcohol thermometer. It needs to be checked against a reference, because alcohol devices tend to age. It is not recommended to use a mercury device, in the cold it is really easy to fail. The graduation of the scale depends on the required accuracy. Household alcohol thermometer provides accuracy to 1 degree. In areas where very high requirements to the temperature regime normally used thermometers with smaller graduations to hundredths or even thousandths of a degree.
2
Experiments in the warm season, make sure that the thermometer hung in the shade. In any case, the conditions of observation must be the same, otherwise there will be errors. Look at the thermometer in the morning, noon, evening and midnight, and record the readings. They add up and divide by the number of observations, in this case by 4.
3
The accuracy of calculations depends not only on the quality of the device, but the number of observations. For example, the weather stations temperature is measured every three hours. Respectively, obtained in the result of their addition amount should be divided not on 4, and 8. There are times when the temperature should be measured every hour. Accordingly, the denominator of the fraction will be the number 24.
4
Positive and negative numbers put in the same as always. That is, if you at night the thermometer shows -2°C, and at +4°C, then divide by the number of observations to +2°. It turns out that in this case the average temperature is +1°C.
5
To calculate the average daily temperature to determine when your area comes at noon. Note on maternity leave and waist time. Identifying noon and midnight, count the points of temperature measurements. The day begins 6 hours before noon and ends after 6 hours. Make the first measurement point corresponding to your calculation six o'clock in the morning. Next time look at the thermometer at 9 o'clock, then at 12, 15 and 18. Total the results and divide by 6. The average night temperature is calculated in the same way. It is advisable to keep records of average daily, average day and night temperatures.
6
In order to calculate the average monthly temperature, add all the average values. Divide by 30, 31, 28 or 29 depending on how many days in the month. Not always an integer number of degrees. Round the resulting number up to the precision that you need. For the school experiment is enough tenths. Round in the usual way. If the number of discharge following the last required less than 5 — rounded down, if 5 or more — a big one. In some cases, require precision to hundredths and thousandths of a degree, or even higher. Similarly, calculate the monthly average day and night temperature.