What is the standard temperature for 8,500 feet?

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Test your knowledge of pitot-static systems for aviation exams. Study with multiple-choice questions and detailed explanations. Prepare effectively for success on your exam!

Multiple Choice

What is the standard temperature for 8,500 feet?

Explanation:
The standard atmosphere uses a constant lapse rate: temperature falls about 2°C for every 1,000 feet of altitude. Starting from 15°C at sea level, at 8,500 feet the drop is 2°C × 8.5 = 17°C. So the standard temperature is 15°C − 17°C = −2°C. This is the value used for ISA-based calculations of air density and instrument readings. The other options don’t match the 2°C per 1,000 ft lapse rate up to this altitude, so they aren’t correct.

The standard atmosphere uses a constant lapse rate: temperature falls about 2°C for every 1,000 feet of altitude. Starting from 15°C at sea level, at 8,500 feet the drop is 2°C × 8.5 = 17°C. So the standard temperature is 15°C − 17°C = −2°C. This is the value used for ISA-based calculations of air density and instrument readings. The other options don’t match the 2°C per 1,000 ft lapse rate up to this altitude, so they aren’t correct.

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