Air Temperature
We measure the temperature of the air in degrees Celsius (ºC)
using a thermometer.
At a weather station 4 thermometers are kept in a white slatted
box called a Stevenson Screen.
This screen shields the thermometers from the sun, rain, snow
etc but allows them to measure the true air temperature.
The 4 thermometers inside this screen are:-
1 Maximum thermometer - this measures the highest temperature
of the day
2 Minimum thermometer - this measures the lowest temperature
of the day.
We can work out the average temperature for the day by adding
these 2 readings and dividing by two.
ie Average Daily temperature = Maximum Temperature + Minimum
Temperature divided by 2
To work out the average monthly temperature, add up the average
temperature for each day in the month and divide by the number
of days in the month.
3 Dry bulb thermometer - this measures air temperature.
4 Wet bulb thermometer - this shows us the amount of water
vapour in the atmosphere.
We use a line graph to record the average temperature. To
do this we simply mark the temperature in the middle of the column
for each month. We then join the dots with straight lines eg
:-
We can also show average temperatures on maps using lines
which we call isotherms eg :-
Weather Unit Temperature Questions
read :- the above notes
T. 1. Fill in your weather Summary Sheet for temperature.
T. 2. Copy and complete the following note :-
"We measure the temperature of the air in degrees Celsius
(ºC) using a ...................
At a weather station 4 thermometers are kept in a white slatted
box called a ........................... ...............................
This screen shields the thermometers from the ..........., ..............,
snow etc but allows them to measure the true air temperature.
The 4 thermometers inside this screen are:-
Maximum thermometer - this measures the ................ temperature
of the day.
Minimum thermometer - this measures the .................. temperature
of the day.
We can work out the average temperature for the day by .........................................
...............................................................................................................................................
ie Average Daily temperature = Maximum Temperature + Minimum
Temperature divided by 2
To work out the average monthly temperature, ...............................................................
.....................................................................................................................................................
Dry bulb thermometer - this measures ....... ...............................
Wet bulb thermometer - this shows us the amount of ...............
................ in the atmosphere."
T. 3. What type of graph do we use to record temperature?
T. 4. a. What month is the warmest in Kilmarnock?
b. What is the average temperature for that month ?
c. What month is the coldest in Kilmarnock?
d. What is the average temperature for that month ?
e. What five months have an average temperature above 10 degrees
Celsius ?
T. 5. Use graph 1 in your worksheet to draw a temperature
graph for :-
T. 6. What do we call lines on maps showing temperature ?
T. 7. Copy and complete the following sentences :-
a. In January, the temperature in the British Isles gets warmer
/ colder the further north / east we go.
b. In July, the temperature in the British Isles gets warmer
/ colder the further north / south we go.
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