Fill in the empty cells of the observation table for daily air temperature, if it is known that at 5:00 the air temperature was the lowest, and at 17:00 it was the highest. Write the air temperature values as whole numbers.

Solution:

The problem states that the lowest temperature was at 5:00 and the highest at 17:00. We need to determine the temperatures shown on the thermometers at these times.

• Thermometer 1 (5:00 - lowest temperature): The mercury level is at -10°C.
• Thermometer 3 (17:00 - highest temperature): The mercury level is at 30°C.
• Thermometer 2 (11:00): This thermometer shows an intermediate temperature. The mercury level is at 10°C.

Answer: The table should be filled with -10°C for 5:00, 10°C for 11:00, and 30°C for 17:00.