Which of these questions can be answered using scientific methods? is history more interesting than algebra? is the color purple more appealing than green? are sundays more hectic than mondays? are the temperatures in your city demonstrating trends in global warming?

The last one, about the trend of the temperatures in my city.

Those can be measured, and described with numbers that mean the same thing to everybody.

On the other hand, "interesting", "appealing", and "hectic" can't be precisely measured, so they can't be studied scientifically.

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.