Higher temperatures will cause a density altitude to be

Higher temperatures will cause a density altitude to be

• A. HIGHER
• B. LOWER
• C. UNCHANGED
• D. VARIABLE

Answer: (A)

Higher temperatures cause density altitude to be higher because warm air is less dense. Density altitude is the altitude in the standard atmosphere where the air density matches the current density. When the air is warmer, its density decreases, so the air at a given pressure behaves as if it were at a higher altitude. Therefore, higher temperatures raise density altitude. It wouldn’t be lower or unchanged, and the relationship isn’t variable—the warmer the air, the higher the density altitude. This matters for performance, since less dense air provides less lift and requires more power.

Higher temperatures cause density altitude to be higher because warm air is less dense. Density altitude is the altitude in the standard atmosphere where the air density matches the current density. When the air is warmer, its density decreases, so the air at a given pressure behaves as if it were at a higher altitude. Therefore, higher temperatures raise density altitude. It wouldn’t be lower or unchanged, and the relationship isn’t variable—the warmer the air, the higher the density altitude. This matters for performance, since less dense air provides less lift and requires more power.